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  My 8800gts 640 isn't even running close to stock speeds 
 
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God Zero Jan 05, 2008, 10:20pm EST Report Abuse
EVGA 640-P2-N828-A1 Geforce 8800 GTS 640MB GDDR3 PCI Express x16 Video Card Retail

That is my gpu its running at

513 stock speed is 576

gpu memory is at 792 not sure what the stock speed is on that.

Can anyone help me how do I get it up to par?

I have the latest nvidia drivers also


German Technology,
GoD____ZeR0
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adam Jan 05, 2008, 10:56pm EST Report Abuse
>> Re: My 8800gts 640 isn't even running close to stock speeds
according to your product number your stock speeds are

540 core

1242 shader core

1700 memory

it will read as

540

1242

850
memory is on a 1.1 ratio so 850 x2 = 1700

if the clocks are wrong just download http://www.softpedia.com/get/Tweak/Video-Tweak/NVIDIA-BIOS-Editor.shtml

select read bios then read into NiBiTor and change the clocks to default. They may have down clocked them due to instability and sold it any ways. Enhanced cooling may fix this.

You PSU may be under powering the GPU and forcing it to underclock as well. Recommended is 27 amps on 12+ rail accoring to EVGA.

you will need to use Nvflash to re flash the bios but make sure your PSU is at specs.

AMD 6000+ @ 3.3 Ghz
Corsair XMS 2 - 2 gig DDR 2 800 @ 880 4 4 4 12 2.1 volts
8800 GTX KO @ 630/1575/2106
vista home premium x64
Enermax 650 watt 39 amp 12+ rails PSU
320 gig sata 2 300 mb 16 meg cache
2 gig 200x flash in readyboost
Sean Costello Jan 05, 2008, 11:03pm EST Report Abuse
>> Re: My 8800gts 640 isn't even running close to stock speeds
could be under powered, whats you PSU?

______
Story of My Life- http://www.youtube.com/watch?v=c764JWVt5Fw
God Zero Jan 05, 2008, 11:17pm EST Report Abuse
>> Re: My 8800gts 640 isn't even running close to stock speeds
coolmasters 850 psu hehe i know its not underpowered ;D

German Technology,
GoD____ZeR0
God Zero Jan 05, 2008, 11:20pm EST Report Abuse
>> Re: My 8800gts 640 isn't even running close to stock speeds
adam said:
according to your product number your stock speeds are

540 core

1242 shader core

1700 memory

it will read as

540

1242

850
memory is on a 1.1 ratio so 850 x2 = 1700

if the clocks are wrong just download http://www.softpedia.com/get/Tweak/Video-Tweak/NVIDIA-BIOS-Editor.shtml

select read bios then read into NiBiTor and change the clocks to default. They may have down clocked them due to instability and sold it any ways. Enhanced cooling may fix this.

You PSU may be under powering the GPU and forcing it to underclock as well. Recommended is 27 amps on 12+ rail accoring to EVGA.

you will need to use Nvflash to re flash the bios but make sure your PSU is at specs.




When i try to read bios it says "cannot start drivers 1275"

German Technology,
GoD____ZeR0
adam Jan 05, 2008, 11:43pm EST Report Abuse
>> Re: My 8800gts 640 isn't even running close to stock speeds
You must be running a 64 bit os ? Working 100% is vista 32 and xp just tried it. Errors out in vista 64

I my self run a custom bios using this software.

AMD 6000+ @ 3.3 Ghz
Corsair XMS 2 - 2 gig DDR 2 800 @ 880 4 4 4 12 2.1 volts
8800 GTX KO @ 630/1575/2106
vista home premium x64
Enermax 650 watt 39 amp 12+ rails PSU
320 gig sata 2 300 mb 16 meg cache
2 gig 200x flash in readyboost
mothow Jan 05, 2008, 11:43pm EST Report Abuse
>> Re: My 8800gts 640 isn't even running close to stock speeds

ASRock Z97 Extreme 4 / i7 4790K / Corsair H80i / 4x4GB Crucial Ballistix Smart Tracer DDR3 1600 / 1TB Western Digital Caviar Black / 240GB Mushkin Chronos Deluxe SSD / 2x Evga GTX 670 FTW 2GB in SLI / Sound Blaster Recon3D Fatal1ty / Corsair HX1000w


 

    
 
 

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