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P5N-D with SLI 9800 GTs q6600 CPU, 600 Watt OCZ PSU enough?

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June 30, 2010 12:35:21 AM

As the titles says, according to ASUS tech support, 600WATT is not enough for my rig, and the reason why im not seeing an increase in performance with SLI enabled, and essentially is why my computer is under performing. He said it was recommended that I have a 900WATT PSU, which seems kind of overboard for what I have. According to others 600WATT was enough for what I was doing, but I'm out of options and baffled as to why my computer is performing as it should be.

Heres a thread I made trying to troubleshoot it, but didn't solve my problem unfortunately. http://www.tomshardware.co.uk/forum/106432-25-what-bott...

I figured I'd move her since I think it may be a PSU issue.

------------------
System Information
------------------
Time of this report: 6/1/2010, 18:34:23
Machine name: POOPFART
Operating System: Windows 7 Professional 64-bit (6.1, Build 7600) (7600.win7_gdr.100226-1909)
Language: English (Regional Setting: English)
System Manufacturer: System manufacturer
System Model: System Product Name
BIOS: Phoenix - AwardBIOS v6.00PG
Processor: Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz (4 CPUs), ~2.4GHz
Memory: 4096MB RAM
Available OS Memory: 4094MB RAM
Page File: 4325MB used, 3861MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.01.7600.16385 64bit Unicode


---------------
Display Devices
---------------
Card name: NVIDIA GeForce 9800 GT
Manufacturer: NVIDIA
Chip type: GeForce 9800 GT
DAC type: Integrated RAMDAC
Device Key: Enum\PCI\VEN_10DE&DEV_0605&SUBSYS_C9813842&REV_A2
Display Memory: 2796 MB
Dedicated Memory: 1005 MB
Shared Memory: 1791 MB
Current Mode: 1680 x 1050 (32 bit) (59Hz)
Monitor Name: ViewSonic VX1962wm Series
Monitor Model: VX1962wm
Monitor Id: VSCD920
Native Mode: 1680 x 1050(p) (59.954Hz)
Output Type: DVI
Driver Name: nvd3dumx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvd3dum,nvwgf2um,nvwgf2um
Driver File Version: 8.17.0011.9745 (English)
Driver Version: 8.17.11.9745
DDI Version: 10
Driver Model: WDDM 1.1
Driver Attributes: Final Retail
Driver Date/Size: 4/3/2010 18:55:31, 11906664 bytes
WHQL Logo'd: Yes
WHQL Date Stamp:

D3D9 Overlay: Supported
DXVA-HD: Supported
DDraw Status: Enabled
D3D Status: Enabled
AGP Status: Enabled


My 3dmark06 scores are low ( I think) for the rig I have.


10467 3DMark with SLI disabled with the Q6600CPU. I'd edit my posts and this stuff in, but doesn't allow me .
10204 is my score with SLI disabled, with the E7400CPU
11219 3DMark06 , is my score with the E7400 SLI ENABLED.

Please help me if possible, I'm out of ideas of things I can do.
a b ) Power supply
June 30, 2010 12:46:45 AM

Lol what, ASUS tech support recommended 900W for 9800 GT in SLI? You could run a pair of GTX 295s in SLI or three GTX 470s with 900W. 600W seems more than enough for 9800 GT SLI...
June 30, 2010 12:52:06 AM

Yeah, but I tested all the components on the board. Ran prime95 on the memory and CPU, swapped out GPUs, swapped CPUs,tried SLI, everything works fine. But I'm not getting the FPS or performance I should be gettings. Could it be that my PSU is bad?

Heres what im getting in speedfan

Vcore1 1.23V
Vcore2 3.23V
+3.3V 0.0V
+5v 4.97V
+12v 12.22V
-12v -16.97V
-5v -8.17
+5v 5.00V
Vbat 3.23V
Related resources
a c 164 ) Power supply
June 30, 2010 2:10:50 AM

600w OCZ is more then enough power, you should of asked the asus tech what he was smoking?

your mobo runs SLI in 8x/8x or better?

if i recall one of your 9800GT cards has 1GB of DDR2 so that will slow it down compared to a 9800GT 512mb DDR3 card.

did you run benchmarks in games that support SLI?
June 30, 2010 3:47:55 AM

The Mobo supports SLI 16x/16x, and I have 2 1gigDDR3 GT 9800s in. I ran 3dmark and got low scores. And my FPS in Age of Conan and Team Fortress 2 didnt increase with SLI enabled. Neither WoW, but I guess you can't really bench with that game. I'm going to rollback to 197.45 see if that helps, if not then I dunno

EDIT: Lower FPS with rollback.
June 30, 2010 4:50:04 PM

Owner of a system w/ P5N-D and sli'd twin 9800 GTs here.

Those scores are too low with sli enabled. My systme has no issues running on a 575 watt PSU.

Set the BIOS settings to all AUTO. Troubleshoot with one card at a time, testing each card in the same slot. Use stress tests like 3DMark06, Furmark, etc. If they both get about the same score, the cards are good.

Then, install 2nd card, check the SLI bridge connector is tightly seated, reboot, and set the NVidia control panel to global default settings and the enable SLI, then run benhcmarks.

It doesn't lsound like anything hardware as you'd get crashes and BSODS if your PSU is getting pushed past its limits.

a b ) Power supply
June 30, 2010 6:35:52 PM

Try overclocking your CPU to 3.0GHz. You may have a quad core, but its 2.4GHz stock speed is a bit slow, especially in programs that only use 2 cores or less.
June 30, 2010 8:06:51 PM

Yeah I Oced it to a stable 3.4 got only about 300 more points. I set the BIOs to auto and everything, still having issues. I test both cards in both slots both yield same performance. I have even tried rolling back drivers but to no avail. Are you running the p5n on windows 7 64bit? I'm starting to think it may be a compatibility issue.

MOBO: P5N-D ASUS MOBO
OS: Windows 7 Professional 64bit
PSU: OCZ Gamexstream 600WATT
Soundcard: Audigy SE Creative
GPU: 2 Geforce 9800 GT 1G DDR3 EVGA
CPU: Core 2 Quad Q6600
Monitor: 1680x1050 ViewSonic
Keyboard: G15 Logitech
Mouse: Logitech Gaming Mouse
June 30, 2010 9:40:37 PM

With SLI enabled and both cards in my computer just went blank, and wouldn't get past the windows 7 Logo unless I took the second GPU out. Think it might be the PSU.
June 30, 2010 9:56:41 PM

Uhh... yeah. When you're trying to isolate the SLI problem, it's usually best to figure out that one first. You might have introduced other stability issues with the overclock.

For stability, I'm running XP on the gaming SLI rig, never tried Win 7 on it.

The only other thing I could think of it is if you have a spare hard drive, small one at 160 or 250 gb, load it with XP and XP drivers and some games, boot off that and if problems goes away then you know it's not hardware.

Try a driver sweep too with Win 7. The Nvidia drivers could be corrupted especially if you ever had an ATI GPU in there before.

Last thing, check for heat issue. With the mobo you can barely squeeze a piece of paper between the videocards.



a b ) Power supply
June 30, 2010 10:11:44 PM

That PSU should be more than enough, but it's possible your unit could be defective or something. I believe your board should be based on the 750i chipset, meaning you would have 8x/8x SLI not 16x/16x.
June 30, 2010 11:32:05 PM

According to ASUS tech and the Mobo specs, its 16/16x. Nothing is overheating, I swapped out the PSU because my computer was crashing with one card in. Not sure if its because the software I installed 20minutes prior, but I doubt it. I was going to try XP next, since I don't think I can get an accurate gauge of the problem with a 300WATT PSU with 15A on the +12v rails, correct me if I am wrong.

Also any recommendations for a affordable yet reliable PSU is appreciated.

Still getting a low 3dmark06 score.

10009 with 1 GPU.
a c 164 ) Power supply
July 1, 2010 10:06:48 PM

publicenemy219 said:
Question with rails? if I have 4 12v rails 15amps each would that equal that of one 12v rail with 60amps?

Im thinking of buying this http://www.tigerdirect.com/applications/searchtools/ite...

Suggestions are appreciated. And thanks for the help thus far


you would need to find out how much power your 12v rail has to find amps and more then likely its a single rail made to look like 4 rails. http://www.jonnyguru.com/forums/showthread.php?t=3990

as far as XION goes, you could do better at that price.

http://www.tigerdirect.com/applications/SearchTools/ite...

http://www.tigerdirect.com/applications/SearchTools/ite...

newegg had a good sale last month on select PSU also. i would check them out

*but you don't need anywhere near that power to run the 9800GT in SLI
July 3, 2010 6:10:33 PM

Well installing a new PSU didn't help with FPS issues and didnt improve SLI at all.
a c 164 ) Power supply
July 3, 2010 6:11:36 PM

...isn't that what everyone said, you already had plenty of power
July 3, 2010 6:14:12 PM

Well nothing else was working, and my old PSU was having boot problems so I would figure it would help.
a c 164 ) Power supply
July 3, 2010 6:19:46 PM

in your previous thread you posted, you stated you tried each card in each socket individually. they produced the same FPS each time. so the issue is a SW one.
July 3, 2010 7:22:31 PM

Are you sure you are enabling SLI in the control panel? Did the SLI bridge come with the motherboard or is it generic aftermarket?
July 3, 2010 7:58:09 PM

Yeah, I'm just gonna add a new partition and install vista 64bit or XP, and see how that goes.
December 2, 2010 10:58:12 PM

I know Im reviving an old thread but, after installation of new graphics drivers, SLI still doesnt increase FPS nor performance. I'm still at a lose with this issue. Neither NVIDIA or ASUS provide any useful support.

------------------
System Information
------------------
Time of this report: 12/2/2010, 19:57:24
Machine name: RONALDTHOMPSON
Operating System: Windows 7 Professional 64-bit (6.1, Build 7600) (7600.win7_gdr.100618-1621)
Language: English (Regional Setting: English)
System Manufacturer: System manufacturer
System Model: System Product Name
BIOS: Phoenix - AwardBIOS v6.00PG
Processor: Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz (4 CPUs), ~2.4GHz
Memory: 4096MB RAM
Available OS Memory: 4094MB RAM
Page File: 2101MB used, 6085MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.01.7600.16385 64bit Unicode

------------
DxDiag Notes
------------
Display Tab 1: No problems found.
Sound Tab 1: No problems found.
Sound Tab 2: No problems found.
Input Tab: No problems found.

--------------------
DirectX Debug Levels
--------------------
Direct3D: 0/4 (retail)
DirectDraw: 0/4 (retail)
DirectInput: 0/5 (retail)
DirectMusic: 0/5 (retail)
DirectPlay: 0/9 (retail)
DirectSound: 0/5 (retail)
DirectShow: 0/6 (retail)

---------------
Display Devices
---------------
Card name: NVIDIA GeForce 9800 GT
Manufacturer: NVIDIA
Chip type: NVxx
DAC type: Integrated RAMDAC
Device Key: Enum\PCI\VEN_10DE&DEV_0605&SUBSYS_C9813842&REV_A2
Display Memory: 2796 MB
Dedicated Memory: 1005 MB
Shared Memory: 1791 MB
Current Mode: 1680 x 1050 (32 bit) (59Hz)
Monitor Name: ViewSonic VX1962wm Series
Monitor Model: VX1962wm
Monitor Id: VSCD920
Native Mode: 1680 x 1050(p) (59.954Hz)
Output Type: DVI
Driver Name: nvd3dumx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvd3dum,nvwgf2um,nvwgf2um
Driver File Version: 8.17.0012.6099 (English)
Driver Version: 8.17.12.6099
DDI Version: 10
Driver Model: WDDM 1.1
Driver Attributes: Final Retail
Driver Date/Size: 10/16/2010 13:55:00, 12788840 bytes
WHQL Logo'd: Yes
WHQL Date Stamp:
D3D9 Overlay: Supported
DXVA-HD: Supported
DDraw Status: Enabled
D3D Status: Enabled
AGP Status: Enabled

-------------
Sound Devices
-------------
Description: Speakers (High Definition Audio Device)
Default Sound Playback: Yes
Default Voice Playback: Yes
Hardware ID: HDAUDIO\FUNC_01&VEN_10EC&DEV_0883&SUBSYS_1043829E&REV_1000
Manufacturer ID: 1
Product ID: 65535
Type: WDM
Driver Name: HdAudio.sys
Driver Version: 6.01.7600.16385 (English)
Driver Attributes: Final Retail
WHQL Logo'd: Yes
Date and Size: 7/13/2009 19:07:00, 350208 bytes

---------------------
Sound Capture Devices
---------------------
Description: Microphone (2- USB2.0 Audio Device)
Default Sound Capture: Yes
Default Voice Capture: Yes
Driver Name: USBAUDIO.sys
Driver Version: 6.01.7600.16385 (English)
Driver Attributes: Final Retail
Date and Size: 7/13/2009 19:06:32, 109568 bytes
Cap Flags: 0x1
Format Flags: 0xFFFFF

-------------------
DirectInput Devices
-------------------
Device Name: Mouse
Attached: 1
Controller ID: n/a
Vendor/Product ID: n/a
FF Driver: n/a

Device Name: Keyboard
Attached: 1
Controller ID: n/a
Vendor/Product ID: n/a
FF Driver: n/a

Device Name: Microsoft Hardware USB Mouse
Attached: 1
Controller ID: 0x0
Vendor/Product ID: 0x045E, 0x0745
FF Driver: n/a

Device Name: Micr
Attached: 1
Controller ID: 0x0
Vendor/Product ID: 0x045E, 0x0745
FF Driver: n/a

Device Name: Micr
Attached: 1
Controller ID: 0x0
Vendor/Product ID: 0x045E, 0x0745
FF Driver: n/a

Device Name: Micr
Attached: 1
Controller ID: 0x0
Vendor/Product ID: 0x045E, 0x0745
FF Driver: n/a

Device Name: Micr
Attached: 1
Controller ID: 0x0
Vendor/Product ID: 0x045E, 0x0745
FF Driver: n/a

Poll w/ Interrupt: No

-----------
USB Devices
-----------
+ USB Root Hub
| Vendor/Product ID: 0x10DE, 0x026D

+-+ Logitech USB G3 (MX518) Optical Mouse

| +-+ Logitech HID-compliant G3/MX518 Optical Mouse

------------
PS/2 Devices
------------
+ HID Keyboard Device

+ Microsoft USB Dual Receiver Wireless Mouse (IntelliPoint)

+ Terminal Server Mouse Driver

------------------------
Disk & DVD/CD-ROM Drives
------------------------
Drive: C:
Free Space: 127.5 GB
Total Space: 305.1 GB
File System: NTFS
Model: WDC WD32 00AAKS-00UU3 SCSI Disk Device

Drive: E:
Free Space: 0.1 GB
Total Space: 0.1 GB
File System: NTFS
Model: WDC WD32 00AAKS-00UU3 SCSI Disk Device

Drive: F:
Model: ORU 85YFO56 SCSI CdRom Device

Drive: D:
Model: HL-DT-ST DVD-RAM GSA-H54L ATA Device


---------------
EVR Power Information
---------------
Current Setting: {5C67A112-A4C9-483F-B4A7-1D473BECAFDC} (Quality)
Quality Flags: 2576
Enabled:
Force throttling
Allow half deinterlace
Allow scaling
Decode Power Usage: 100
Balanced Flags: 1424
Enabled:
Force throttling
Allow batching
Force half deinterlace
Force scaling
Decode Power Usage: 50
PowerFlags: 1424
Enabled:
Force throttling
Allow batching
Force half deinterlace
Force scaling
Decode Power Usage: 0
December 3, 2010 4:21:30 AM

The good thing is you're able to run the test an dyour system boots fine, no crashes. I think you're software switches or global settings for SLI are off.

Are you using the stock sli bridge that came with the motherboard?

Microsoft says your mobo should have no compatibility issues with Win 7


http://www.microsoft.com/windows/compatibility/windows-...
December 3, 2010 5:56:44 AM

Yeah I am using the stock SLI bridge. And I have SLI turned on in Nvidia control panel. I ran some benchmarks and scores dont change with sli enabled and disabled. I am convinced this is a drivers related problem, since I have literally checked out all the components in my rig and they all seem to be functioning fine.
December 3, 2010 7:18:09 AM

I gotta admire your tenacity to keep troubleshooting this problem. My first guess is the Win7 chipset drivers are corrupted. Get them from Nvidia and don't use the Asus which is what I did with my P5N-D mobo.

Don't worry the Eureka moment will eventually arrive and you'll see the improved scores when SLI happens.
December 3, 2010 6:32:28 PM

haha thanks. I just find it weird that I get lower FPS when I upgraded to windows 7 and got this new Mobo.

I've tried uninstalling the Chipset drivers through driver sweeper and reinstalling the ones from nvidia but that doesn't work. Maybe Im not uninstalling the right ones or doing it the right way. How would I go about that manually?

December 3, 2010 7:47:59 PM

Check device drivers for any cautions.

Go on NVDA website and let them scan your chipset drivers.
December 3, 2010 10:51:48 PM

Yeah i've done all that.

I was wondering what version drivers you are using?
December 4, 2010 4:14:47 AM

Sorry I odn't have that info. I sold mu dual 9800 GTs and P5N-D about 2 months ago. I also sold my GTX 260. Doing more video editing and gaming slowed my work down.
December 7, 2010 4:41:43 AM

Yeah thats what I'm going to do if this doesnt get fixed. I'm looking at the EVGA percision tool, and it shows the GPU usage, and one GPU is about 90% usage and the other is at 10%. I dunno if thats relevant but I was thinking that SLI isnt taking advantage of my other GPU.
December 7, 2010 12:45:33 PM

publicenemy219 said:
Yeah thats what I'm going to do if this doesnt get fixed. I'm looking at the EVGA percision tool, and it shows the GPU usage, and one GPU is about 90% usage and the other is at 10%. I dunno if thats relevant but I was thinking that SLI isnt taking advantage of my other GPU.


Not all apps will task both GPUs. Just because doesn't SLI is turned on doesn't mean it is utilized equally at all times. SLI runs only as efficiently as the quality of the app or program. Basically, it's application-dependent meaning it doesn't kick on to the max unless the application makes it do so.
December 8, 2010 9:58:40 PM

Alright. Well I did a 3dmark score and my Q6600 only got a 3378.0. I checked up others scores with the same processors and others were getting 5500-6500s. Im now starting to wonder if its my CPU thats screwed up.
December 9, 2010 3:43:50 AM

You have to overclock your CPU since at it's stock speed it's not pushing your duals GPUs.
!