Good morning all (or goodday/goodnight depending on when you read this/where you're located/what your beliefs are), I recently purchased a couple of used xfx 8800gtx cards for super cheap for my system. It's an aging system, but I try to make the most of it. Anywho, I believe my Athlon 64 X2 4800+ is bottlenecking my 2 shiny new (used) cards. One card by itself will load to 100%, but enable sli and they sit anywhere from 25% to 90% load depending on the game. In some games I get better FPS than with one card, others are worse. At first I thought it was my humble little 600W Noisetaker PSU not providing enough power, so I plugged one of the cards into a spare 235W PSU I had laying around and jumped the on/off pins. When that failed I overclocked my CPU from 2.4GHz to 2.8GHz. I don't dare go higher on stock cooling as it starts getting above 56C, and I don't plan on keeping it at 2.8 on stock cooling either. I'm wating for money to get a new CPU cooler to further my overclocking exploits, which leads me to my first question.
How can I best aleviate this botteneck? Overclocking would be the obvious answer, but around how high would I have to go to get most modern games to run smoothly? Is it even possible to get it that high? A processer upgrade is pretty much out of the question without a mobo upgrade as the socket type is 939. I've heard that game booster software may be able to help, but I haven't seen much difference with those things in the past. Is there anything else I can do to help abate the bottleneck?
Also, one weird thing I noticed is in Bad Company 2 the CPU load was between %40-%60 and the GPU was %50-%60. Does that mean I have another bottleneck elsewhere? I feel like I'm always so longwinded, so I apologize to anyone that actually read all this. I have included my PC specs and some info I collected below. Thanks in advance, I hope to hear back soon from the Tom's Community
Specs
----------
> Mobo : ASUS A8N32-SLI Deluxe 939
> PSU : ENERMAX Noisetaker ATX 600W + My jury-rigged 235W PSU powering 2nd graphics card
> Processor : Athlon 64 X2 4800+
> RAM : CORSAIR XMS 2GB (2 x 1GB) DDR 400 (PC 3200) Dual Channel Memory (@2-3-3-6[stock])
> Video Card : 2x XFX 8800GTX (Stock Clocks)
> Main Hard Drive : Western Digital Caviar Black 750GB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5"
> Secondary Drive: HITACHI Travelstar 60GB 5400 RPM 8MB Cache SATA 1.5Gb/s 2.5" (Salvaged)
> Operating System : Microsoft Windows 7 Ultimate 64-bit (Looking to do a fresh install soon due to other problems)
> Graphics Drivers : ForceWare 285.62 Beta Drivers
> Case: Unknown
> Cooling: 5x 80mm Fans
(Any constructive critisizm for my build is quite welcomed I can include pictures as well if anyone cares)
Some Noted Observations for Your Analysis
-----------------------------------------------------
HAWX Benchmark (1856x1392, All settings at highest, AA x8, v-sync off)
Stock CPU Clocks (2.4GHz)
CPU : 90%-100%
GPU : 25%-40%
FPS : 33 Average (132 Highest)
OC CPU Clocks (2.8GHz)
CPU : 90%-100%
GPU : 30%-45%
FPS : 35 Average (188 Highest)
Crysis SP Demo GPU Test (1600x1200, AA off, All settings very high)
Stock CPU Clocks (2.4GHz)
CPU : 75%-90% (60%-87% w/8xAA)
GPU : 42%-75% (60%-90% w/8xAA)
FPS : 17.41 (1st run), 15.84 (2nd run) (10.31 first run w/8xAA)
OC CPU Clocks (2.8MHz)
CPU : 60-90
GPU : 60-90
FPS : 18.3 (1st run), 23.43 (2nd run)
As previously mentioned, on Bad Company 2 (I believe it was all highest settings, 1856x1392) the CPU load is 40%-60%, GPU 50%-60%. Also in NFS: Shift 2 my FPS is severely diminished from a single card (from 25+ FPS to 5+ with SLI) on highest settings.
Yes my tests aren't exactly following the scientific method, but they should suffice I hope. If you need me to run any more tests I'll be happy to when I have some free time during the day. Btw, this is my first time running SLI if ya can't tell
Looking forward to your responses
P.S. If anyone thinks this belongs in the CPU forum or something (and provides a good reason why) let me know and I'll get it switched
How can I best aleviate this botteneck? Overclocking would be the obvious answer, but around how high would I have to go to get most modern games to run smoothly? Is it even possible to get it that high? A processer upgrade is pretty much out of the question without a mobo upgrade as the socket type is 939. I've heard that game booster software may be able to help, but I haven't seen much difference with those things in the past. Is there anything else I can do to help abate the bottleneck?
Also, one weird thing I noticed is in Bad Company 2 the CPU load was between %40-%60 and the GPU was %50-%60. Does that mean I have another bottleneck elsewhere? I feel like I'm always so longwinded, so I apologize to anyone that actually read all this. I have included my PC specs and some info I collected below. Thanks in advance, I hope to hear back soon from the Tom's Community
Specs
----------
> Mobo : ASUS A8N32-SLI Deluxe 939
> PSU : ENERMAX Noisetaker ATX 600W + My jury-rigged 235W PSU powering 2nd graphics card
> Processor : Athlon 64 X2 4800+
> RAM : CORSAIR XMS 2GB (2 x 1GB) DDR 400 (PC 3200) Dual Channel Memory (@2-3-3-6[stock])
> Video Card : 2x XFX 8800GTX (Stock Clocks)
> Main Hard Drive : Western Digital Caviar Black 750GB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5"
> Secondary Drive: HITACHI Travelstar 60GB 5400 RPM 8MB Cache SATA 1.5Gb/s 2.5" (Salvaged)
> Operating System : Microsoft Windows 7 Ultimate 64-bit (Looking to do a fresh install soon due to other problems)
> Graphics Drivers : ForceWare 285.62 Beta Drivers
> Case: Unknown
> Cooling: 5x 80mm Fans
(Any constructive critisizm for my build is quite welcomed I can include pictures as well if anyone cares)
Some Noted Observations for Your Analysis
-----------------------------------------------------
HAWX Benchmark (1856x1392, All settings at highest, AA x8, v-sync off)
Stock CPU Clocks (2.4GHz)
CPU : 90%-100%
GPU : 25%-40%
FPS : 33 Average (132 Highest)
OC CPU Clocks (2.8GHz)
CPU : 90%-100%
GPU : 30%-45%
FPS : 35 Average (188 Highest)
Crysis SP Demo GPU Test (1600x1200, AA off, All settings very high)
Stock CPU Clocks (2.4GHz)
CPU : 75%-90% (60%-87% w/8xAA)
GPU : 42%-75% (60%-90% w/8xAA)
FPS : 17.41 (1st run), 15.84 (2nd run) (10.31 first run w/8xAA)
OC CPU Clocks (2.8MHz)
CPU : 60-90
GPU : 60-90
FPS : 18.3 (1st run), 23.43 (2nd run)
As previously mentioned, on Bad Company 2 (I believe it was all highest settings, 1856x1392) the CPU load is 40%-60%, GPU 50%-60%. Also in NFS: Shift 2 my FPS is severely diminished from a single card (from 25+ FPS to 5+ with SLI) on highest settings.
Yes my tests aren't exactly following the scientific method, but they should suffice I hope. If you need me to run any more tests I'll be happy to when I have some free time during the day. Btw, this is my first time running SLI if ya can't tell
Looking forward to your responses
P.S. If anyone thinks this belongs in the CPU forum or something (and provides a good reason why) let me know and I'll get it switched