GTX 680 sli not outperforming single 680

(For some reason I found my first post in the wrong thread area -sorry)

Hey everyone. This is my first post. Really grateful there's a community like this to help. And FYI: I'm not posting before spending a week (for about 4 hours each day) having searched threads all over the web for similar problems and attmepting the proposed solutions as well as finding a hundred differrent ways to 'google' the same issue.

Here are my specs:

PSU: 650w (can't remember brand but it's excellent and gets screaming reviews)
MOBO: Gigabyte P55A-UD3
CPU: i5 760
Ram: 4GB
GPU: 2x EVGA Superclocked Signature GTX 680
OS: Windows 7
Nvidia Driver: 310.90
ASUS 23.6 Display (1920x1080p @60hz native)

Sli is not officially supported by my mother-board (as I have a 16x and 4x PCI slots) so I am using "HyperSLI" to access SLI functionality. I have confirmed that the issue I'm having isn't to do with the limitations of the bus speed as I have benchmarked my cards in their respective slots bringing these results:

Gpu 1 :P8373 x16 slot
Gpu 2: P7966 x4 slot

(approximately a 5% differrence)

I doubt this should be having such an adverse impact.

SLI 3D Mark 11 score:
P11223 -this score seems slightly higher than the common scores for my rig.

I acheived this after:
-disabling USB 3.0 and SATA 6 (to minimize drain on shared PCI resources)
-and setting CPU performance enhancer (in GB BIOS) to Extreme (options being Extreme, turbo and standard) -note these are just presets -they're not any form of overclock.

Metro 2033 has shown a marked improvement from SLI with the GPU usage being in the 70-80 range in 1080p and maxed settings with 4xmsaa -definitely seeing the benefit of 2 cards as opposed to one.

However; Crysis 2, Battlefield 3 and Far Cry 3 are all having a similar issue.

With a single GPU, the usage is around 70-80% and I'm getting what you'd expect from a single GTX 680.
When running SLI, both GPU's usage is around 40-50% and I'm getting the performance you'd expect from a SINGLE GTX 680 still.

By performance I'm referring to Frame rate.

In battlefield 3 on larger maps (all settings maxed 1080p, v sync off, motion blur max, 4xmsAA (ultra) I'm hovering between 70fps and 80 with regular drops to 60s and 50s and occasional (but still often) drops to 40s when looking over a large section of the map.

In BF3 my CPU usage during SLI is up around 75-88%.

I've of course reinstalled the drivers multiple times.

Any thoughts dudes?
45 answers Last reply
More about outperforming single
  1. I suspect the games that show no benefit in SLi are limited by the processor not the graphics cards.
  2. Possible CPU bottleneck to be honest. It's fairly outdated unless you have a huge OC on it.
  3. Might well be that. Your current CPU is weaker than most modern I3's. For a setup like that, I'd want a modern, overclockable sandy- or ivy-bridge I5. Heck, you might even want to wait until Haswell. Not that'd be absolutely necessary. A modern I5 would be very unlikely to bottlneck that configuration, especially if overclocked.
  4. I thought CPU bottleneck until I saw what he's using (which is still an extremely capable CPU - no worthwhile gains from any current-gen or even previous-gen CPU over the i5 750 for gaming). And until I saw his CPU usage isn't at 100% anyway.
  5. I was thinking possibly CPU, or possibly poor SLI optimisation. Latest beta drivers?

    Also HyperSLI? could cause the issues in unsupported games? latest version? adds overhead?
  6. Yeah I don't know about HyperSLI, but it does seem to be the odd point here. Those games are not badly optimised for SLI and the CPU is excellent.
  7. Yeah I've been wondering if CPU has been to blame here. I'm sure an upgrade of CPU wouldn't hurt but somehow I wonder whether it would bottleneck 2 680s to the point of performing at the maximum ability of one card.

    Just to clarify -it's an i5 760. There seems to be some divided opinions on the ability of my current CPU to deliver on the demands of my rig (and of course factoring in that some games demand more GPU and some demand more CPU). Can anyone say for certain and with confidence whether my CPU will cut it?

    Are there any conclusive tests I can run to see whether the CPU is restricting my GPU in the games in question or even in general?

    I've also made sure to obtain the LATEST version of Hypersli. Although I do agree it is the odd link in the chain (that and my mobo not being sli certified officially -having established only a 5% loss on the 4x port).

    Options I have considered:
    -New Mobo (would eliminate the need for HyperSLI)
    -OC the CPU, adding a fan and beefier PSU to support it.

    Or both above options -spending money is a last resort but I'm willing to do it if it's the only SURE solution. Not because I'm cheap but because in the last month I've forked out a grand just on GPUs.

    It's strange because my 3D mark 11 score is evidence to me that the system is capable of performing very well (metro 2033 is an amazing experience on this system as well). But the issue with BF3 and Crysis 2 in particular still stands.

    Thanks for everyone's input so far :)
    I REALLY appreciate you taking the time to post.
  8. The negative opinions about your CPU are not based on actual benchmarks but simply on the age of the CPU. What people fail to realise is that Intel has made no progress since Nehalem (the original i3/i5/i7 lineup) in gaming. Your i5 760 was every bit as good at gaming as the i7 920, 950 etc. Which in turn gamed just as well as the i5 2000s and i7 2000s. Which in turn are almost identical to the i5 3000s and i7 3000s. Progress made has been in non-gaming performance (moderate) and integrated graphics performance (high).

    The fact that your CPU isn't solidly at 100% usage would strongly suggest you're not being limited by it. Keep in mind of course that you may need a new CPU anyway if you get a new motherboard. Depends obviously on whether or not you can find an old 1156 board with what you want. The fact that you get improved performance in some cases though suggests your hardware is working correctly. You're on the 310.90 drivers?
  9. Thanks for expanding on that sam_p_lay. Yes I am on the 310.90 drivers. Also I just noticed that in menus and between servers on both far cry 3 and Battlefield 3, GPU usage goes up to about 60-75% and as soon as I'm in game, BF3 drops back to 40-50. Far Cry is slightly better -I was playing heaps of the Co-Op tonight and it seemed to sit around 65% usage on both GPUs.
  10. do nvidia do seperate game profiles or do they still bundle them with the drivers?
    im pretty much in agreement with sam. the i5 should have enough bandwidth. you can check the pci-e by limiting the x16 to x4 (some bios's allow it) and see if you get the same issue.
    my guess is that the hypersli is unstable on your motherboard and basically turning off 1 of the cards. also try turning off physx so it doesnt try to use 1 card as a physx card only.
    as for setting the performance to extreme it will make little difference over standard. standard just brings stability when you oc.
  11. HEXiT said:
    do nvidia do seperate game profiles or do they still bundle them with the drivers?
    im pretty much in agreement with sam. the i5 should have enough bandwidth. you can check the pci-e by limiting the x16 to x4 (some bios's allow it) and see if you get the same issue.
    my guess is that the hypersli is unstable on your motherboard and basically turning off 1 of the cards. also try turning off physx so it doesnt try to use 1 card as a physx card only.
    as for setting the performance to extreme it will make little difference over standard. standard just brings stability when you oc.


    I wonder if sli profiles work for me -a lot of my games are on steam and I wonder if selecting the .exe registers properly with it. I still don't understand the concept of 'sli profiles' -all the settings on all the games appear to be on default within each game profile and I don't see what it actually does for the games.

    Also -I've benchmarked each card individually within its respective slot:
    16x Gpu 1 :P8373
    4x Gpu 2: P7966

    Moreover -it appears this setting has somewhat of an impact on benchmark scores:

    Standard: P11096
    Turbo: P11164 (default setting in BIOS)
    Extreme: P11214

    And after disabling USB 3.0 and SATA 6 I obtained: P11223.

    As for tuning off 1 of the cards -both cards appear to be recieving HALF normal utilization (I monitor it in realtime using readings to my logitech G15 screen during games from EVGA precision X). But for argument's sake I will give disabling PhysX a go and return with my findings. Cheers
  12. disabling physx will force the system to use the 2 cards and not set 1 as the physx card which can sometimes happen with apps like hypersli if the game isnt fully supported or the drivers have issues. its worth checking just to rule it out.
    as for the cards i ment test them both together with both pci-e slots being set to x4 some bios will allow you to change the bios from 16-8-4-1 so setting both to x4 will illiminate any disparity in the timings. again its just a test to see if it has any bearing on perfomance over all.
    reason being if you loose 5% by dropping the timings but gain 50% performance over because the second card starts working as it should it may be worth limiting both pci-e slots to geth the bigger performance gains.
    its a guess but it may solve it...
  13. Hey, I've tried setting PhysX to CPU and it had no effect in my plight. Which makes sense as BF3 and Crysis 2 are not PhysX enabled games any how.

    Let me just figure out to how to limit the 16x slot to 4x -I'm not sure I fully understand why you want me to look into it, but I'll do it anyway (if my BIOS allows it). We've already established the 5% difference between the 16x and 4x slot. I can only imagine it worsening performance.

    Again HyperSLI is the weak link in the chain so who knows -but sam_p_lay did acknowledge that the hardware is fine.

    BTW it seems even Metro 2033 is only using up to 75% of the GPUs but somehow is clearly better in SLI than with a single card.
  14. Hey Hexit. Just did a browse of the Bios and I couldn't locate the option to lower the PCI Bus speed -its a gigabyte Mobo for anyone who might have a clue on how to change this. Your explainations about PhysX not playing nice with hyperSLI and uneven Bus speeds are insightful theories. I appreicate them. I really would like to know how I can clock down the 16x slot in my BIOS :(
  15. I think it is suprising how many games don't utilize SLI. I mean automatically at least. I mean two 680s in SLI costs almost as much as a 690, why not just get one of those? I really like 1 card setups, less power consumption and just more compatible with everything.

    Nvidia's website has some how-to's on SLI, not only how to properly install them, but how to properly enable in-game settings and settings within the control panel itself.
  16. I'm not about to pawn my two gtx680s for a 690. I can only imagine I'd loose money doing that. While it may have been a better option to start with, that doesn't really help me now.

    I didn't find anything of use on nvidia's site but perhaps I didn't know where to look. Linky?
  17. Could there be any benefit in using this:

    http://www.nhancer.com/
  18. nhancer works well but can be dangerous to people who arnt careful.
    just stick with the basics till you understand what it can do.
  19. I have no idea what I'm doing or whether it can help me. Should I just delete it or can it be of some use to me here?
  20. it may be of use to you. but make sure you read the help files as your checking on whether certain features may help or not.
    it can force sli and force sli with compatibility options so yeah it may help you.
  21. It's very dated software. I would question it's use. Is it the kind of thing I'd want to use after REMOVING hypersli?
  22. Also I'm open to some completely differrent suggestions. The hardware is capable but it's just not doing what it's meant to :(

    It's really frustrating when you spend another $550 and get barely any improvement.
  23. Come one guys, a pair of GTX680s on a 650W power supply? I don't think so. They're throttling back because they're not getting enough power. I had similar on one of my rigs. I was powering a pair of GTX580s with a 850W supply and it was underperforming because of the voltage droop. Once I had upgraded the power supply I was a happy bunny again.
  24. GTX680 has a TDP of 195 watts. 390 watts for two. Of course they may exceed TDP at heavy load, but not by as much as you're talking about. Even at 450 watts, 200 watts is left over for the rest of the system, the highest consumption component of which is a 95W CPU.
  25. Yeah according to the reading I've done, my system is sufficiently powered -not quite running at best efficiency but certainly sufficiently powered. As far as I've known PSU doesn't affect performance -it will either work or it won't.

    Paul; Do you have any research, resources or before and after benchmarks with your case to suggest the cards will scale the throttle according to PSU?
  26. remove hypersli. its of no use to you its for sli'ing different cards and yours are the same. you can sli 2 680's as long as the the same gpu, they can be different brands and they will work together as if you bought a matching pair. so its not needed.
    yes nhancer is old software but it runs off the drivers so as long as your drivers are up to date the software will still work as it should.
  27. The reason I use hypersli is because I have a 16x and 4x PCI slots. Until installing hypersli I couldn't get NVCP to give me the "Enable Sli" option. I believe it's because my mother board is not supported. Is there a better method to achieve this?

    Also; how do I remove hypersli?
  28. The best I can give you is the experience I had with my dual GTX580s. I occasionally benchmarks my systems to see how they performing and if they're performing the same as, or better than, they used to.

    Spec - click link, it's the top machine, the one with the i7-3930K. It used to be powered by a Cooler Master Silent Pro 850W. I know, I found out the the hard way they're not that great.

    When I first built my i7-3930K/dual GTX580 it would give me benchamrks of around P12400 but would drop to P10400 on subsequent tests, sometimes it would test to P10400 and wouldn't get any higher.

    Went to a LAN party, the machine bugged out big big time with crashes all over the place. Someone had suggested the power supply. I installed CPUID HWmonitor. It showed me that my +12V supply dropped below 11.6V (unstable) and as low as 11.4V (system crash).

    I upgraded the power supply to the Antec 1200W HCP (I know it's overkill). The benchmark results rose to P12400 and have stayed/risen since with driver updates. My +12V supply hasn't dropped below 11.8V since.

    I cannot give you links for the poor performance but here's one for after the fix
    http://www.3dmark.com/3dm11/2878520

    I suppose the recommendation from this is to install a couple of tools, namely CPUID HWmonitor and EVGA precision. HWmonitor will tell you how your supply voltages are faring whilst EVGA precision will tell you your GPU utilisation. Of course these tools are only useful if you use a couple of stress test tools at the same time, prime95 and furmark are good ones.
  29. I'll check out HWmonitor -I'm already running Precision with read outs to my LCD screen on my keyboard. That's how I know about this issue.
  30. These were my findings -and I have no idea what they mean....

    CPUID HWMonitor Report
    -------------------------------------------------------------------------

    Binaries
    -------------------------------------------------------------------------

    HWMonitor version 1.2.1.0

    Monitoring
    -------------------------------------------------------------------------

    Mainboard Model P55A-UD3 (0x000001F4 - 0x00A86A2E)

    LPCIO
    -------------------------------------------------------------------------

    LPCIO Vendor ITE
    LPCIO Model IT8720
    LPCIO Vendor ID 0x90
    LPCIO Chip ID 0x8720
    LPCIO Revision ID 0x8
    Config Mode I/O address 0x2E
    Config Mode LDN 0x4
    Config Mode registers
    00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
    00 00 00 00 00 00 00 00 04 00 00 00 00 00 00 00 00
    10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    20 87 20 08 00 00 00 FF 1D 40 08 00 00 01 00 00 00
    30 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    40 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    50 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    60 02 90 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    70 00 02 00 00 04 04 00 00 00 00 00 00 00 00 00 00
    Register space LPC, base address = 0x0290


    Hardware Monitors
    -------------------------------------------------------------------------

    Hardware monitor ITE IT87
    Voltage 0 0.85 Volts [0x35] (CPU VCORE)
    Voltage 1 1.57 Volts [0x62] (VIN1)
    Voltage 2 3.41 Volts [0xD5] (+3.3V)
    Voltage 3 5.03 Volts [0xBB] (+5V)
    Voltage 4 0.70 Volts [0xB] (+12V)
    Voltage 5 -12.29 Volts [0xC0] (-12V)
    Voltage 7 3.60 Volts [0x86] (+5V VCCH)
    Voltage 8 3.23 Volts [0xCA] (VBAT)
    Temperature 0 43°C (109°F) [0x2B] (TMPIN0)
    Temperature 1 25°C (77°F) [0x19] (TMPIN1)
    Temperature 2 31°C (87°F) [0x1F] (TMPIN2)
    Fan 0 1452 RPM [0x1D1] (FANIN0)
    Fan 2 2184 RPM [0x135] (FANIN2)
    Fan PWM 0 0 pc [0x0] (FANPWM0)
    Fan PWM 1 0 pc [0x0] (FANPWM1)
    Fan PWM 2 0 pc [0x0] (FANPWM2)
    Register space LPC, base address = 0x0290

    00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
    00 13 10 00 00 FF BF 00 37 FF 87 60 0F 17 D1 FF 35
    10 FF FF FF 76 D7 82 80 82 01 FF 01 FF FF FF FF FF
    20 35 62 D5 BB 11 C0 01 86 CA 2B 19 1F 80 A7 66 66
    30 FF 00 FF 00 FF 00 FF 00 FF 00 FF 00 36 00 FF 00
    40 7F 7F 7F 7F 7F 7F 5F 74 2D 40 95 00 FF FF FF FF
    50 FF 38 7F 7F 7F D0 59 59 90 59 00 12 60 00 00 00
    60 00 0A 37 23 90 03 00 FF 00 14 41 23 90 03 00 FF
    70 00 0A 37 23 90 03 00 FF FF FF FF FF FF FF FF FF
    80 FF FF 00 00 FF FF 00 00 02 30 01 02 01 00 20 BE
    90 FF 00 00 00 FF 00 00 00 FF FF FF FF FF FF FF FF
    A0 C6 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
    B0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
    C0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
    D0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
    E0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
    F0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

    Hardware monitor Gigabyte DES
    Voltage 0 0.86 Volts [0x36] (CPU)
    Current 0 2.63 Amps [0x1] (CPU)
    Power 0 2.27 W (CPU)
    Register space LPC, base address = 0x0290

    Hardware monitor NVIDIA NVAPI
    Voltage 0 0.99 Volts [0x3DB] (VIN0)
    Temperature 0 42°C (107°F) [0x2A] (TMPIN0)
    Fan 0 990 RPM [0x3DE] (FANIN0)
    Fan PWM 0 30 pc [0x1E] (FANPWMIN0)

    Hardware monitor NVIDIA NVAPI
    Voltage 0 0.99 Volts [0x3DB] (VIN0)
    Temperature 0 35°C (95°F) [0x23] (TMPIN0)
    Fan 0 1050 RPM [0x41A] (FANIN0)
    Fan PWM 0 30 pc [0x1E] (FANPWMIN0)


    Processors
    -------------------------------------------------------------------------

    Number of processors 1
    Number of threads 4

    APICs
    -------------------------------------------------------------------------

    Processor 0
    -- Core 0
    -- Thread 0 0
    -- Core 1
    -- Thread 0 2
    -- Core 2
    -- Thread 0 4
    -- Core 3
    -- Thread 0 6

    Timers
    -------------------------------------------------------------------------

    ACPI timer 3.580 MHz
    HPET timer 14.318 MHz
    Perf timer 2.732 MHz
    Sys timer 1.000 KHz


    Processors Information
    -------------------------------------------------------------------------

    Processor 1 ID = 0
    Number of cores 4 (max 8)
    Number of threads 4 (max 16)
    Name Intel Core i5 760
    Codename Lynnfield
    Specification Intel(R) Core(TM) i5 CPU 760 @ 2.80GHz
    Package (platform ID) Socket 1156 LGA (0x1)
    CPUID 6.E.5
    Extended CPUID 6.1E
    Core Stepping B1
    Technology 45 nm
    TDP Limit 95 Watts
    Core Speed 1199.2 MHz
    Multiplier x FSB 9.0 x 133.2 MHz
    Rated Bus speed 2398.4 MHz
    Stock frequency 2800 MHz
    Instructions sets MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, EM64T, VT-x
    L1 Data cache 4 x 32 KBytes, 8-way set associative, 64-byte line size
    L1 Instruction cache 4 x 32 KBytes, 4-way set associative, 64-byte line size
    L2 cache 4 x 256 KBytes, 8-way set associative, 64-byte line size
    L3 cache 8 MBytes, 16-way set associative, 64-byte line size
    FID/VID Control yes


    Turbo Mode supported, enabled
    Max turbo frequency 3333 MHz
    Max non-turbo ratio 21x
    Max turbo ratio 25x
    Max efficiency ratio 9x
    TDC Limit 89 Amps
    Core TDP 89 Watts
    Uncore TDP 6 Watts
    Power @ 9x 13 Watts
    Power @ 10x 15 Watts
    Power @ 11x 18 Watts
    Power @ 12x 22 Watts
    Power @ 13x 27 Watts
    Power @ 14x 32 Watts
    Power @ 15x 38 Watts
    Power @ 16x 45 Watts
    Power @ 17x 53 Watts
    Power @ 18x 62 Watts
    Power @ 19x 71 Watts
    Power @ 20x 82 Watts
    Power @ 21x 95 Watts
    Max bus number 63
    Attached device PCI device at bus 63, device 2, function 1
    Attached device PCI device at bus 63, device 3, function 4
    Attached device PCI device at bus 63, device 2, function 1


    Thread dumps
    -------------------------------------------------------------------------

    CPU Thread 0
    APIC ID 0
    Topology Processor ID 0, Core ID 0, Thread ID 0
    Type 01020005h
    Max CPUID level 0000000Bh
    Max CPUID ext. level 80000008h
    Cache descriptor Level 1, D, 32 KB, 2 thread(s)
    Cache descriptor Level 1, I, 32 KB, 2 thread(s)
    Cache descriptor Level 2, U, 256 KB, 2 thread(s)
    Cache descriptor Level 3, U, 8 MB, 16 thread(s)

    CPUID
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    0x80000008 0x00003024 0x00000000 0x00000000 0x00000000

    MSR 0x0000001B 0x00000000 0xFEE00900
    MSR 0x0000003A 0x00000000 0x00000005
    MSR 0x000001A0 0x00000000 0x00850089
    MSR 0x000000CE 0x00000900 0x40031500
    MSR 0x00000017 0x00040000 0x00000000
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    MSR 0x000001AD 0x00000000 0x16161919
    MSR 0x0000019A 0x00000000 0x00000000
    MSR 0x000001A4 0x00000000 0x00000000
    MSR 0x000001AC 0x00000000 0x02C802F8
    MSR 0x000001FC 0x00000000 0x00000001
    MSR 0x00000300 0x00000000 0xF000000D
    MSR 0x0000019C 0x00000000 0x88380000
    MSR 0x000001A2 0x00000000 0x00631000
    MSR 0xC0000103 0x00000000 0x00000000
    MSR 0x00000198 0x00000000 0x00000009
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    CPU Thread 1
    APIC ID 2
    Topology Processor ID 0, Core ID 1, Thread ID 0
    Type 01020005h
    Max CPUID level 0000000Bh
    Max CPUID ext. level 80000008h
    Cache descriptor Level 1, D, 32 KB, 2 thread(s)
    Cache descriptor Level 1, I, 32 KB, 2 thread(s)
    Cache descriptor Level 2, U, 256 KB, 2 thread(s)
    Cache descriptor Level 3, U, 8 MB, 16 thread(s)

    CPUID
    0x00000000 0x0000000B 0x756E6547 0x6C65746E 0x49656E69
    0x00000001 0x000106E5 0x02100800 0x0098E3FD 0xBFEBFBFF
    0x00000002 0x55035A01 0x00F0B0E4 0x00000000 0x09CA212C
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    0x00000004 0x1C03C163 0x03C0003F 0x00001FFF 0x00000002
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    0x0000000B 0x00000001 0x00000001 0x00000100 0x00000002
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    MSR 0x0000001B 0x00000000 0xFEE00800
    MSR 0x0000003A 0x00000000 0x00000005
    MSR 0x000001A0 0x00000000 0x00850089
    MSR 0x000000CE 0x00000900 0x40031500
    MSR 0x00000017 0x00040000 0x00000000
    MSR 0x00000035 0x00000000 0x00040004
    MSR 0x000000C1 0x00000000 0x00000000
    MSR 0x000000C2 0x00000000 0x00000000
    MSR 0x000000C3 0x00000000 0x00000000
    MSR 0x000000C4 0x00000000 0x00000000
    MSR 0x00000186 0x00000000 0x00000000
    MSR 0x00000187 0x00000000 0x00000000
    MSR 0x000001AD 0x00000000 0x16161919
    MSR 0x0000019A 0x00000000 0x00000000
    MSR 0x000001A4 0x00000000 0x00000000
    MSR 0x000001AC 0x00000000 0x02C802F8
    MSR 0x000001FC 0x00000000 0x00000001
    MSR 0x00000300 0x00000000 0xF000000D
    MSR 0x0000019C 0x00000000 0x883A0000
    MSR 0x000001A2 0x00000000 0x00631000
    MSR 0xC0000103 0x00000000 0x00000000
    MSR 0x00000198 0x00000000 0x00000009
    MSR 0x00000199 0x00000000 0x00000009

    CPU Thread 2
    APIC ID 4
    Topology Processor ID 0, Core ID 2, Thread ID 0
    Type 01020005h
    Max CPUID level 0000000Bh
    Max CPUID ext. level 80000008h
    Cache descriptor Level 1, D, 32 KB, 2 thread(s)
    Cache descriptor Level 1, I, 32 KB, 2 thread(s)
    Cache descriptor Level 2, U, 256 KB, 2 thread(s)
    Cache descriptor Level 3, U, 8 MB, 16 thread(s)

    CPUID
    0x00000000 0x0000000B 0x756E6547 0x6C65746E 0x49656E69
    0x00000001 0x000106E5 0x04100800 0x0098E3FD 0xBFEBFBFF
    0x00000002 0x55035A01 0x00F0B0E4 0x00000000 0x09CA212C
    0x00000003 0x00000000 0x00000000 0x00000000 0x00000000
    0x00000004 0x1C004121 0x01C0003F 0x0000003F 0x00000000
    0x00000004 0x1C004122 0x00C0003F 0x0000007F 0x00000000
    0x00000004 0x1C004143 0x01C0003F 0x000001FF 0x00000000
    0x00000004 0x1C03C163 0x03C0003F 0x00001FFF 0x00000002
    0x00000005 0x00000040 0x00000040 0x00000003 0x00001120
    0x00000006 0x00000003 0x00000002 0x00000001 0x00000000
    0x00000007 0x00000000 0x00000000 0x00000000 0x00000000
    0x00000008 0x00000000 0x00000000 0x00000000 0x00000000
    0x00000009 0x00000000 0x00000000 0x00000000 0x00000000
    0x0000000A 0x07300403 0x00000044 0x00000000 0x00000603
    0x0000000B 0x00000001 0x00000001 0x00000100 0x00000004
    0x0000000B 0x00000004 0x00000004 0x00000201 0x00000004
    0x80000000 0x80000008 0x00000000 0x00000000 0x00000000
    0x80000001 0x00000000 0x00000000 0x00000001 0x28100800
    0x80000002 0x65746E49 0x2952286C 0x726F4320 0x4D542865
    0x80000003 0x35692029 0x55504320 0x20202020 0x20202020
    0x80000004 0x30363720 0x20402020 0x30382E32 0x007A4847
    0x80000005 0x00000000 0x00000000 0x00000000 0x00000000
    0x80000006 0x00000000 0x00000000 0x01006040 0x00000000
    0x80000007 0x00000000 0x00000000 0x00000000 0x00000100
    0x80000008 0x00003024 0x00000000 0x00000000 0x00000000

    MSR 0x0000001B 0x00000000 0xFEE00800
    MSR 0x0000003A 0x00000000 0x00000005
    MSR 0x000001A0 0x00000000 0x00850089
    MSR 0x000000CE 0x00000900 0x40031500
    MSR 0x00000017 0x00040000 0x00000000
    MSR 0x00000035 0x00000000 0x00040004
    MSR 0x000000C1 0x00000000 0x00000000
    MSR 0x000000C2 0x00000000 0x00000000
    MSR 0x000000C3 0x00000000 0x00000000
    MSR 0x000000C4 0x00000000 0x00000000
    MSR 0x00000186 0x00000000 0x00000000
    MSR 0x00000187 0x00000000 0x00000000
    MSR 0x000001AD 0x00000000 0x16161919
    MSR 0x0000019A 0x00000000 0x00000000
    MSR 0x000001A4 0x00000000 0x00000000
    MSR 0x000001AC 0x00000000 0x02C802F8
    MSR 0x000001FC 0x00000000 0x00000001
    MSR 0x00000300 0x00000000 0xF000000D
    MSR 0x0000019C 0x00000000 0x88390000
    MSR 0x000001A2 0x00000000 0x00631000
    MSR 0xC0000103 0x00000000 0x00000000
    MSR 0x00000198 0x00000000 0x00000009
    MSR 0x00000199 0x00000000 0x00000009

    CPU Thread 3
    APIC ID 6
    Topology Processor ID 0, Core ID 3, Thread ID 0
    Type 01020005h
    Max CPUID level 0000000Bh
    Max CPUID ext. level 80000008h
    Cache descriptor Level 1, D, 32 KB, 2 thread(s)
    Cache descriptor Level 1, I, 32 KB, 2 thread(s)
    Cache descriptor Level 2, U, 256 KB, 2 thread(s)
    Cache descriptor Level 3, U, 8 MB, 16 thread(s)

    CPUID
    0x00000000 0x0000000B 0x756E6547 0x6C65746E 0x49656E69
    0x00000001 0x000106E5 0x06100800 0x0098E3FD 0xBFEBFBFF
    0x00000002 0x55035A01 0x00F0B0E4 0x00000000 0x09CA212C
    0x00000003 0x00000000 0x00000000 0x00000000 0x00000000
    0x00000004 0x1C004121 0x01C0003F 0x0000003F 0x00000000
    0x00000004 0x1C004122 0x00C0003F 0x0000007F 0x00000000
    0x00000004 0x1C004143 0x01C0003F 0x000001FF 0x00000000
    0x00000004 0x1C03C163 0x03C0003F 0x00001FFF 0x00000002
    0x00000005 0x00000040 0x00000040 0x00000003 0x00001120
    0x00000006 0x00000003 0x00000002 0x00000001 0x00000000
    0x00000007 0x00000000 0x00000000 0x00000000 0x00000000
    0x00000008 0x00000000 0x00000000 0x00000000 0x00000000
    0x00000009 0x00000000 0x00000000 0x00000000 0x00000000
    0x0000000A 0x07300403 0x00000044 0x00000000 0x00000603
    0x0000000B 0x00000001 0x00000001 0x00000100 0x00000006
    0x0000000B 0x00000004 0x00000004 0x00000201 0x00000006
    0x80000000 0x80000008 0x00000000 0x00000000 0x00000000
    0x80000001 0x00000000 0x00000000 0x00000001 0x28100800
    0x80000002 0x65746E49 0x2952286C 0x726F4320 0x4D542865
    0x80000003 0x35692029 0x55504320 0x20202020 0x20202020
    0x80000004 0x30363720 0x20402020 0x30382E32 0x007A4847
    0x80000005 0x00000000 0x00000000 0x00000000 0x00000000
    0x80000006 0x00000000 0x00000000 0x01006040 0x00000000
    0x80000007 0x00000000 0x00000000 0x00000000 0x00000100
    0x80000008 0x00003024 0x00000000 0x00000000 0x00000000

    MSR 0x0000001B 0x00000000 0xFEE00800
    MSR 0x0000003A 0x00000000 0x00000005
    MSR 0x000001A0 0x00000000 0x00850089
    MSR 0x000000CE 0x00000900 0x40031500
    MSR 0x00000017 0x00040000 0x00000000
    MSR 0x00000035 0x00000000 0x00040004
    MSR 0x000000C1 0x00000000 0x00000000
    MSR 0x000000C2 0x00000000 0x00000000
    MSR 0x000000C3 0x00000000 0x00000000
    MSR 0x000000C4 0x00000000 0x00000000
    MSR 0x00000186 0x00000000 0x00000000
    MSR 0x00000187 0x00000000 0x00000000
    MSR 0x000001AD 0x00000000 0x16161919
    MSR 0x0000019A 0x00000000 0x00000000
    MSR 0x000001A4 0x00000000 0x00000000
    MSR 0x000001AC 0x00000000 0x02C802F8
    MSR 0x000001FC 0x00000000 0x00000001
    MSR 0x00000300 0x00000000 0xF000000D
    MSR 0x0000019C 0x00000000 0x883A0000
    MSR 0x000001A2 0x00000000 0x00631000
    MSR 0xC0000103 0x00000000 0x00000000
    MSR 0x00000198 0x00000000 0x00000009
    MSR 0x00000199 0x00000000 0x00000009


    Storage
    -------------------------------------------------------------------------

    USB Device Logitech USB Optical Wheel Mouse, class=0x00, subclass=0x00, vendor=0x046D, product=0xC016
    USB Device Logitech Cordless USB Mouse, class=0x00, subclass=0x00, vendor=0x046D, product=0xC50E
    USB Device Generic USB Hub, class=0x09, subclass=0x00, vendor=0x046D, product=0xC223
    USB Device USB Composite Device, class=0x00, subclass=0x00, vendor=0x046D, product=0xC221
    USB Device USB Input Device, class=0x00, subclass=0x00, vendor=0x046D, product=0xC222

    Graphic APIs
    -------------------------------------------------------------------------

    API NVIDIA I/O
    API NVIDIA NVAPI

    Display Adapters
    -------------------------------------------------------------------------

    Display adapter 0
    Name NVIDIA GeForce GTX 680
    Revision A2
    Codename GK104
    Technology 28 nm
    PCI device bus 1 (0x1), device 0 (0x0), function 0 (0x0)
    Vendor ID 0x10DE (0x3842)
    Model ID 0x1180 (0x2683)

    Display adapter 1
    Name NVIDIA GeForce GTX 680
    Revision A2
    Codename GK104
    Technology 28 nm
    PCI device bus 4 (0x4), device 0 (0x0), function 0 (0x0)
    Vendor ID 0x10DE (0x3842)
    Model ID 0x1180 (0x2683)


    ACPI
    -------------------------------------------------------------------------

    ACPI Tree
    _GPE
    _L08
    _L03
    _L04
    _L0C
    _L0E
    _L05
    _L20
    _L25
    _L0D
    _L0B
    _L09
    _PR_
    CPU0
    TYPE
    PSEN
    CSEN
    MWOS
    TSEN
    _PDC
    _OSC
    _PSS
    _PCT
    _PPC
    _PSD
    _CST
    _TPC
    _PTC
    _TSS
    _TSD
    CPU1
    TYPE
    PSEN
    CSEN
    MWOS
    TSEN
    _PDC
    _OSC
    _PSS
    _PCT
    _PPC
    _PSD
    _CST
    _TPC
    _PTC
    _TSS
    _TSD
    CPU2
    TYPE
    PSEN
    CSEN
    MWOS
    TSEN
    _PDC
    _OSC
    _PSS
    _PCT
    _PPC
    _PSD
    _CST
    _TPC
    _PTC
    _TSS
    _TSD
    CPU3
    TYPE
    PSEN
    CSEN
    MWOS
    TSEN
    _PDC
    _OSC
    _PSS
    _PCT
    _PPC
    _PSD
    _CST
    _TPC
    _PTC
    _TSS
    _TSD
    CPU4
    CPU5
    CPU6
    CPU7
    _SB_
    PWRB
    _HID
    _STA
    PCI0
    _HID
    _ADR
    _UID
    _BBN
    _S3D
    _STA
    _CRS
    PICM
    APIC
    _PRT
    PEX0
    _ADR
    _STA
    _PRW
    PIC0
    API0
    _PRT
    PEX1
    _ADR
    _STA
    _PRW
    PIC1
    API1
    _PRT
    PEX2
    _ADR
    _STA
    _PRW
    PIC2
    API2
    _PRT
    PEX3
    _ADR
    _STA
    _PRW
    PIC3
    API3
    _PRT
    PEX4
    _ADR
    _STA
    _PRW
    PIC4
    API4
    _PRT
    PEX5
    _ADR
    _STA
    _PRW
    PIC5
    API5
    _PRT
    PEX6
    _ADR
    _STA
    _PRW
    PIC6
    API6
    _PRT
    PEX7
    _ADR
    _STA
    _PRW
    PIC7
    API7
    _PRT
    HUB0
    _ADR
    _STA
    PICM
    APIC
    _PRT
    _PRW
    PX40
    _ADR
    PREV
    PIRQ
    PIR2
    LPIO
    SYSR
    _HID
    _UID
    _CRS
    PIC_
    _HID
    _CRS
    DMA1
    _HID
    _CRS
    TMR_
    _HID
    ATT5
    ATT6
    _CRS
    HPET
    _HID
    ATT3
    ATT4
    _STA
    _CRS
    RTC_
    _HID
    ATT0
    ATT1
    ATT2
    ATT3
    _CRS
    SPKR
    _HID
    _CRS
    COPR
    _HID
    _CRS
    FDC0
    _HID
    _STA
    _DIS
    _CRS
    _PRS
    _SRS
    UAR1
    _HID
    _UID
    _STA
    _DIS
    _CRS
    _PRS
    _SRS
    _PRW
    _PSW
    LPT1
    _HID
    _STA
    _DIS
    _CRS
    _PRS
    _SRS
    ECP1
    _HID
    _STA
    _DIS
    _CRS
    _PRS
    _SRS
    KBCT
    [ ]
    P060
    [ ]
    P064
    PS2M
    _HID
    _STA
    _CRS
    PS2K
    _HID
    _STA
    _CRS
    PSMR
    _HID
    _UID
    _STA
    _CRS
    PMIO
    _HID
    _UID
    _CRS
    _INI
    USB0
    _ADR
    _S3D
    _PRW
    USB1
    _ADR
    _S3D
    _PRW
    USB2
    _ADR
    _S3D
    _PRW
    USB3
    _ADR
    _S3D
    _PRW
    USB4
    _ADR
    _S3D
    _PRW
    USB5
    _ADR
    _S3D
    _PRW
    USB6
    _ADR
    _S3D
    _PRW
    USBE
    _ADR
    _S3D
    _PRW
    USE2
    _ADR
    _S3D
    _PRW
    IDE1
    _ADR
    PCI_
    [ ]
    ITM0
    ITM1
    SIT0
    SIT1
    [ ]
    UDC0
    UDC1
    [ ]
    UDT0
    UDT1
    [ ]
    ICF0
    ICF1
    [ ]
    WPPE
    [ ]
    FAS0
    FAS1
    PRIM
    _ADR
    _GTM
    _STM
    DRV0
    _ADR
    H15F
    _GTF
    DRV1
    _ADR
    H15F
    _GTF
    SECD
    _ADR
    _GTM
    _STM
    DRV0
    _ADR
    H15F
    _GTF
    DRV1
    _ADR
    H15F
    _GTF
    IDE2
    _ADR
    PCI_
    [ ]
    ITM0
    ITM1
    SIT0
    SIT1
    [ ]
    UDC0
    [ ]
    UDC1
    [ ]
    UDT0
    UDT1
    [ ]
    ICF0
    ICF1
    [ ]
    WPPE
    [ ]
    FAS0
    FAS1
    PRIM
    _ADR
    _GTM
    _STM
    DRV0
    _ADR
    H15F
    _GTF
    DRV1
    _ADR
    H15F
    _GTF
    SECD
    _ADR
    _GTM
    _STM
    DRV0
    _ADR
    H15F
    _GTF
    DRV1
    _ADR
    H15F
    _GTF
    GTM_
    STM_
    H15P
    GTF0
    GTF1
    PX43
    _ADR
    PBAS
    [ ]
    BAS0
    SMBB
    AZAL
    _ADR
    _PRW
    BUFA
    BUFB
    IRQV
    LNKA
    _HID
    _UID
    _STA
    _PRS
    _DIS
    _CRS
    _SRS
    LNKB
    _HID
    _UID
    _STA
    _PRS
    _DIS
    _CRS
    _SRS
    LNKC
    _HID
    _UID
    _STA
    _PRS
    _DIS
    _CRS
    _SRS
    LNKD
    _HID
    _UID
    _STA
    _PRS
    _DIS
    _CRS
    _SRS
    LNKE
    _HID
    _UID
    _STA
    _PRS
    _DIS
    _CRS
    _SRS
    LNKF
    _HID
    _UID
    _STA
    _PRS
    _DIS
    _CRS
    _SRS
    LNK0
    _HID
    _UID
    _STA
    _PRS
    _DIS
    _CRS
    _SRS
    LNK1
    _HID
    _UID
    _STA
    _PRS
    _DIS
    _CRS
    _SRS
    _PRW
    EXPL
    _HID
    _UID
    _CRS
    MEM_
    _HID
    _CRS
    FWH_
    _HID
    _CRS
    _SI_
    _MSG
    _SST
    _TZ_
    _REV
    _OS_
    _OSI
    _GL_
    _S0_
    SS1_
    _S3_
    _S4_
    _S5_
    FLAG
    STAT
    SMOD
    [ ]
    [ ]
    SUSF
    LBOC
    [ ]
    UBMC
    [ ]
    DEBG
    [ ]
    DBG1
    RCRB
    [ ]
    [ ]
    [ ]
    HPTF
    ELKM
    [ ]
    [ ]
    [ ]
    ELSO
    [ ]
    [ ]
    [ ]
    [ ]
    EXTM
    [ ]
    ROM1
    RMS1
    ROM2
    RMS2
    ROM3
    RMS3
    AMEM
    SMIC
    [ ]
    SCP_
    GP2C
    [ ]
    G2C1
    G2C2
    APMP
    [ ]
    APMC
    APMD
    AGPS
    [ ]
    GPSE
    GPSS
    GPCN
    [ ]
    [ ]
    SWGC
    [ ]
    OSFX
    LINX
    AMAC
    OSFL
    STRC
    INFO
    [ ]
    KBDI
    RTCW
    PS2F
    IRFL
    DISE
    SSHU
    PICF
    _PIC
    _PTS
    _WAK
    [ ]
    REV0
    [ ]
    PIRA
    PIRB
    PIRC
    PIRD
    [ ]
    PIRE
    PIRF
    PIRG
    PIRH
    [ ]
    UAIO
    PRIO
    LPE1
    LPE2
    GN1L
    GN1H
    GN2L
    GN2H
    DISD
    CKIO
    SLDM
    SCPP
    [ ]
    SMIP
    OSTP
    WIN1
    [ ]
    INDP
    DATP
    GPIO
    [ ]
    GO01
    GO02
    GO03
    GO04
    GO05
    [ ]
    [ ]
    CFG_
    [ ]
    LDN_
    [ ]
    IDHI
    IDLO
    POWC
    [ ]
    ACTR
    [ ]
    IOAH
    IOAL
    IO2H
    IO2L
    [ ]
    INTR
    [ ]
    INT1
    [ ]
    DMCH
    [ ]
    GP40
    [ ]
    OPT1
    OPT2
    OPT3
    OPT4
    ENFG
    EXFG
    GSRG
    SSRG
  31. Dear Shred_777,

    I'd like to help you with what I know from my experience and a lot of research.

    You have 2 problems here:

    Firstly, You PSU is probably not capable of running the 2 GPUs. If you check this link,(http://www.pccasegear.com/index.php?main_page=product_info&cPath=193_1377&products_id=19988), scroll down to the "requirements' section, you will see that you need a PSU that has current rating of 38 Amps on the 12+ volt rail.
    Therefore, 2 GPUs need at least 76 Amps, which means you need a PSU such as this(I'm not advertising it) (http://www.pccasegear.com/index.php?main_page=product_info&cPath=15_535&products_id=19412).It has a table that shows the 12+ volt rail current rating.

    Secondly, your CPU frequency is 2.8 Ghz, which sure bottlenecks the 2 GPUs. It just can't catch up with the 2 powerful GPUs. I think you need to overclock your CPU up to at least 3.5 Ghz to see how it goes or you best buy a new CPU and then overclock it up to 4.5 Ghz (I believe this is the optimal option). You will know what i mean via a Linus tech tips video with his good clarification (http://www.youtube.com/watch?v=TGdo75gasaQ). Also, I knew he's right when I maxed out Crysis 2 (my CPU is core i5-3470 @ 3.6 Ghz & GPU is 1 GTX 670). While my FPS varied from 30-50 depending the scenes with high resolution textures & directX 11 and my CPU load was 100%, my GPU load just varied from 50-67%, which didn't reach its full potential.

    Hope these will solve your problem. I know how frustrating it is when you can't get the performance you expect.
  32. XFX 650W XXX Edition Modular Power Supply, 80+ Bronze Certified, Quiet 135mm Cooling Fan. ATX12V 2.2 / ESP12V 2.91, Main ATX 20+4pin, ATX 4+4pin, EPS12V 8pin, PCIe 6+2pin, SATA 15pin, Peripheral 4pin, FDD 4pin (P1-650X-CAG9)

    My PSU
  33. http://xfxforce.com/en-gb/Products/Power-Supply/XFX/Pro-Series/ProSeries-650W-PSU.aspx

    I should have mentioned this before. This is am exceptional power supply and is ideal for SLI (read the link before debating) -but is it enough?

    It may be worth doing the reading here and watching the second half of the video there.
  34. well I can tell you right now that you have a power bottleneck here is the requirements for power for those cards this is if everything in your system is not over clocked and that doesn't count for watt spikes so you always want to go over the min watt req. you need to fix this first and then after that you can check to see if your CPU may be bottlenecking it some which would be your second most likely reason.

    •GeForce GTX 680 - On your average system the card requires you to have a 550 Watt power supply unit.
    •GeForce GTX 680 SLI - On your average system the cards require you to have a 750 Watt power supply unit as minimum.
  35. That's the recommendation, I'm not sure that is exactly what's happening. No one has been able to give me ANY evidence or research that backs up the idea that the gtx 680s are throttling back their power as a result of poor power. As far as I'm aware they will either work or they won't. Have a read of the thread below:

    http://www.overclock.net/t/1332439/gtx-680-sli-psu-advice

    (Btw One of the suggested PSU's are my current one)
  36. jesse-2010 said:


    Thanks! Gee it's nice when opinions are supported :)

    That's not a dig at anyone else's replies here -I'm grateful for everyone's input. It just adds credibility to claims which require me to spend money. I have been looking into this and everything else I've found says that the PSU can't effect GPU. This is the first I hear of it. I've just contacted XFX regarding the potential of my PSU to bottleneck my GPUs. I'm trying to extend my research in any way I can. If anyone else has thoughts or articles/charts/stats/research or links on the matter I'd really value their input.

    Thanks again dude!
  37. Unfortunately I don't have evidence to back my theory up but since these new GPU's work on a power target setting clocks etc, a low amp rail could effect them.

    I have a gtx 670 and the power target never goes over 30% and I'm pretty sure it's down to my crappy OCZ modstream PSU. This has happened with two 670's I've had so it's not a card issue.
  38. CPU bottleneck
  39. I see only 2 things here:
    Either games are not optmized for HyperSLI (as Metro works, means SLI is in fact working), and also CPU wont bottleneck more than 3-4 FPS, unless you are playing a CPU dependand game like Starcraft 2. Hell, im still using my Q6600 at stock speeds with an 560 TI and i play almost every game out there maxed with SweetFX AA.

    Second option, lack of Power.
    I doubt thats it, but i know i personally always have AT least an extra 200W myself to be on the safe side and never wonrry about it.
  40. This was the solution from EVGA:

    Your Question:

    For some reason my Nvidia control panel doesn't give me the option to enable SLI.

    In order to get around this, I'm using an application called HyperSLI:
    http://www.techpowerup.com/forums/showpost.php?p=2414995

    This gives me the option to enable SLI in the Nvidia control Panel. When using a single GTX 680 (since before installing the second card), I get well above 80% GPU utilization as is indicated by Precision X, when running games like Battlefield 3 and Far Cry 3 as well as Crysis 2. However, upon enabling SLI from the Nvdia Control Panel, GPU usage in menus is in the 70s and 80s (percentage-wise) and yet once I'm in game, usage is in the 40s and 50s. Needless to say this affects my frame rate giving me only a MILD improvement when going froma single card to SLI.

    I want to know why my GPU's are witholding their full power. I'm using 310.90 Nvidia drivers.

    Also it is worth noting that my current system's hardware is functional as it scores P11223 on 3DMark '11.

    Benchmarking each GPU within it's respect PCI-E slot the scores are as follows:

    Gpu 1 :P8373
    Gpu 2: P7966

    I've paid A LOT of money for these two cards and currently I'm only expereiencing the performance of one. I've asked on forums and have spent HOURS for over a week trying to resolve this issue. PLEASE HELP ME!
    Your Answer:

    Hi (name removed),

    Reviewing your system specs I see that the motherboard (Gigabyte P55A-UD3) does not support SLI and the second PCIe x16 slot is only mechanically x16 and electrical it can only run at x4 speeds. HyperSLI is not supported and not recommended as it is a hack to enable SLI. To run SLI it is also recommended that both cards run in at least x8 speed slots.

    Unfortunately due to the lack of SLI support on the board and one of the slots running at x4 speeds we cannot guarantee any performance increase and it will not officially run in SLI. You can use the second card as a PhysX card. To run the cards in SLI you will have to use a motherboard that supports SLI.

    Regards,
    EVGA


    So an ASUS Maximus iii then?
  41. So I purchased a Silverstone Evolution Gold 1000watt PSU, and I've ordered an Asus Mamimus iii Gene Mobo. Already attached PSU and should have mobo this week. I'm not sure this will fix things but we'll see. Somehow everything just feels smoother and quicker on this new PSU. That shouldn't be but somehow that's how it feels atm.
  42. Could be placebo effect. You know something's changed that *could* affect performance.
  43. Haha I absolutely agree. I'm a sucker for the old placebo. I can confidently say I have less CPU lockups and freezes and crashes. Although since a few days ago (prePsu upgrade and now) I've been getting a freeze at the loading screen at the end of every multiplayer match on Far Cry 3. Doing a quick google it seems to be a common issue. Anyone else experienced this?

    Sorry don't mean to get off topic. There isn't much more I can say until I get my mobo. Although EVGA support confirmed with me that GPU usage has NOTHING to do with PSU.
  44. I hope no one kills me for resurrecting this thread.

    I know for a fact however that a lot of people have posted everywhere about my exact issue. I simply want to keep this up to date as a reference for anyone experiencing the same issue.

    I have recently purchased and installed an Asus mximus Gene III motherboard which is an approved mobo for SLI.

    I have removed hyperSLI and have SLI running straight off the bat.

    I've seen a 5% improvement across the board in everything including my benchmark.

    I've just purchased a Noctua NH-D14, and tonight will install it as well as attempt to overclock to about 4.1Ghz on my i5 760 -which I know is achievable. At least I know I will definitly reach 3.6.

    There are theories going around that BF3 and Far Cry 3 are CPU intensive games and bottle necks occur only when the CPU has to work harder -Metro seems to be very much GPU focused -hence the usage is high there as well as in 3D Mark.

    My CPU usage as stated earlier came from an inaccurate read out. It would seem after monitoring it in task manager, my CPU usuage in BF3 is quite high.

    I will report if I see higher usuage from my GPUs after tonight's overclock.

    This will confirm ONCE AND FOR ALL if the low usage in BF3 and some of these other games is due to a CPU bottle neck.
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