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Old 01-28-07, 10:09 AM   #1
TheHighHat
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Default 8800GTS Slow?!

System:
X7DAE 5000X chipset
2 x Xeon Dempsey 2.66GHz (4 cores + 4 SMT virtual cores)
4GB FB-DIMM @ 533MHz
256 PCI hole
8800GTS (Leadtek)... was 7900GT
620W PSU

Software
Windows XP Pro x32 (with some nLite enchancements)
nVIDIA 97.72

3dmark2001: 21000
nVIDIA demos: Smoke, Adrianne, & Froggy run *very slow & choppy*
3dmark2005: first 2 scenes about 30fps... last 2 about 2fps *barf!*
3dmark2006: uber slow 15fps at best

I have not tried any games yet.... but I dont know why it is so crummy... the 7900GT did better.

Any thoughts?
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Old 01-28-07, 10:54 AM   #2
GeniusPr0
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Default Re: 8800GTS Slow?!

did ya use driver cleaner? or did u just install over the 7900s... or is it a reformat
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Old 01-28-07, 11:43 AM   #3
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Default Re: 8800GTS Slow?!

What brand and specs of your PSU?
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Old 01-28-07, 12:49 PM   #4
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Default Re: 8800GTS Slow?!

Yep, definitely a problem there. Motherboard drivers are installed I'm guessing. Try falling back to the 97.02s.
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Old 01-28-07, 01:25 PM   #5
TheHighHat
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Default Re: 8800GTS Slow?!

PSU is AeroCoolZERODBA ZERODBA-S620 EPS 12V (dual 12V rails, modular)

This is a fresh XP install. No other VGA drivers installed. Only nVIDIA 97.72
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Old 01-28-07, 04:36 PM   #6
Redeemed
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Default Re: 8800GTS Slow?!

Quote:
Originally Posted by TheHighHat
PSU is AeroCoolZERODBA ZERODBA-S620 EPS 12V (dual 12V rails, modular)

This is a fresh XP install. No other VGA drivers installed. Only nVIDIA 97.72
Hmm... do you know how many amps the second rail has on your PSU?
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Old 01-28-07, 06:02 PM   #7
TheHighHat
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Default Re: 8800GTS Slow?!

Quote:
Originally Posted by Redeemed
Hmm... do you know how many amps the second rail has on your PSU?
http://www.newegg.com/Product/Produc...82E16817331002

20A & 18A

----------

Also, I do not quite understand how the current would cause such poor performance and yet still enable the machine to run.

nVIDIA monitor reports GPU core at 512 MHz & GPU memory at 792 MHz.

Supermicro mobo monitoring tools (X7DAE) say all voltages stable & normal.

----------

Thoughts?
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Old 01-28-07, 06:11 PM   #8
Redeemed
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Default Re: 8800GTS Slow?!

Quote:
Originally Posted by TheHighHat
http://www.newegg.com/Product/Produc...82E16817331002

20A & 18A

----------

Also, I do not quite understand how the current would cause such poor performance and yet still enable the machine to run.

nVIDIA monitor reports GPU core at 512 MHz & GPU memory at 792 MHz.

Supermicro mobo monitoring tools (X7DAE) say all voltages stable & normal.
Okay, even if you were to underpower the GPU- you wouldn't know it untill you did something that would stress the GPU.

When you are just at the desktop, the GPU is essentially idle. Thus, it really isn't consuming much power at all. But once you fire up a game with lots of eyecandy, the GPU has to work much harder- thus requiring more "juice". Just like when you stomp on the accelerator of your car, it'll consume more gas a lot quicker than if you were to gently and barely press down on the accelerator.

I'm thinking the PSU might be to blame. Dual rail PSUs really do suck for one reason: the first rail is always 100% dedicated to the CPU. This is pretty dumb as the CPU will never actually need that many amps- but that is just the way it is. So, that leaves only the amps on rail2 to power the rest of your system.

If you happen to have access to a PSU that is single, Tri, or quad-rail and has higher amps that you can devote to the graphics card- try that.

Otherwise, it very well might be a defective card... or something else.
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Old 01-29-07, 08:39 AM   #9
TheHighHat
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Default Re: 8800GTS Slow?!

Hmm.. good points.

All I can say is that even if I fire off eight threads of high vertex (GPU bound) & high texture transfers (GPU bound) and a game and benchmark the harddrive... the most system tasking set of events I can do simultaneously... nothing bad happens.. so I think the PSU is handling the load well....

I have read that the 8800 can be CPU limited... but the Xeon Dempsey is a strong performer even at the low end.

argh... I guess the card could be faulty.. but are there any other signs or tools that would make this more clear?
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Old 01-29-07, 02:38 PM   #10
Redeemed
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Default Re: 8800GTS Slow?!

Have you altered anything in the driver control panel? Also, I would recommend using the latest drivers. See if those fix anything.

Being that the GF8 series is new, these drivers are bound to have some bugs for a while. It'll take time for the drivers to fully mature to what we are accustomed to.

I'd recommend updating to the latest drivers, and see if that fixes anything.
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Old 01-29-07, 03:13 PM   #11
TheHighHat
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Default Re: 8800GTS Slow?!

I tried benchmarking with the default control panel settings... no good...

then manually tried various other configurations ranging from highest performance to best quality, including the control panels "high performance", etc., slider settings... no good...

all software & drivers, up to date with latest versions...

still dog slow...


I may try a bios update, but there shouldn't be anything significant there at this time... bios is stable & fast... perhaps a clovertown update at most...


the goal ironically is not gaming performance, but for scientific computing with the stream processors... but i need to know it is working properly somehow...

(thanks for engaging this discussion by the way... very helpful)
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Old 01-30-07, 06:32 PM   #12
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Default Re: 8800GTS Slow?!

Quote:
Originally Posted by TheHighHat
Hmm.. good points.

All I can say is that even if I fire off eight threads of high vertex (GPU bound) & high texture transfers (GPU bound) and a game and benchmark the harddrive... the most system tasking set of events I can do simultaneously... nothing bad happens.. so I think the PSU is handling the load well....

I have read that the 8800 can be CPU limited... but the Xeon Dempsey is a strong performer even at the low end.

argh... I guess the card could be faulty.. but are there any other signs or tools that would make this more clear?
A good way to check if it is the PSU is to use a second one to power the GFX card. If you have another ATX PSU lying around, you can take a piece of wire, and connect the green wire on the main 20 or 24 pin harness, to any of the black wires. This creates the connection to force the psu on when you plug it in. Then you can take and use either an adapter for the molex (should have came with a PCI-E to 2 molex adapter in the box with the card), or the PCI-E connection if you happen to have it. Plug that into the card from the second PSU, then try doing the tests. If the numbers look a lot better, then it is definetely the PSU, otherwise it could be a bad gfx card or something else that isn't set right.

It might be possible that you don't have the PCI-E slot set to 16x, but if the other card worked fine, usually you should get about the same performance out of the newer card, as it will go as fast as it can before something bottlenecks it.

Here is a pretty good example of how to force a psu to turn on without being connected to anything. http://www.dvhardware.net/modules.ph...rticle&artid=5
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