8800GT bios for better overclocking! *test*

[eva2000]

Well guys been playing with modifying my 512MB Inno3D 8800GT OC bios clock speeds as I been having problems overclocking both cards when in SLI mode. Only one card in SLI gets overclocked resulting in SLI scores similar to single 8800GT scores. Flashing my bios from 650/1500/950 default to 742/1836/1000 fixed the issue as you can see at http://i4memory.com/showthread.php?p=82839#post82839

Then decided to play with that Exact Mode Extra VID everyone has been discussing. I tried 1.1v and no change in max clock speed in SLI mode, both cards in SLI still max out at 742/1836/1000. Then I tried 1.22v and guess what I can at least do 3dmark06 sometimes at 756/1836/1000 now!

Still have issues oc'ing both 8800GT in SLI mode. Ntune 6 with 169.09 beta drivers overclocks only 2nd card. While Rivatuner 2.06 only overclocks 1st card. But still can pass 3dmark06 @756/1836/1000 now

I'll share my bioses, all modded from the base 512MB Inno3D 8800GT OC edition bios which defaults to 650/1500/950.

Bios files can be downloaded here. Use 7zip or winrar to extract them.

Included is instructions for flashing:

All custom bioses are based on the original 512MB Inno3D 8800GT OC 62.92.16.00.05 bios.

- Original 8800GT OC 650/1500/950 bios
- 650/1500/950 1.1v Exact Mode Extra bios
- 650/1500/950 1.22v Exact Mode Extra bios
- 700/1700/1000 1.1v Exact Mode Extra bios
- 742/1836/1000 non voltage change bios
- 742/1782/1000 1.1v Exact Mode Extra bios
- 742/1836/1000 1.1v Exact Mode Extra bios
- 742/1836/1000 1.22v Exact Mode Extra bios

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Flashing Instructions
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1. Take a *.rom bios you want to use from bioses folder and rename it to update.rom

2. Create bootable floppy disk and place contents of nvflash folder on floppy disk

3. Place update.rom on bootable floppy disk

4. Reboot system with bootable floppy disk inserted

5. At DOS prompt type the word listed below in quotes (type without quotes though). Always backup your original video card bios before flashing!!!!

"backup"

this will backup your video cards default bios

"update"

this will flash your video card to the modded bios named update.rom

"restore"

this will flash your video card with your original video card bios you backed up.

Disclaimer: I am not responsible for any damage done to your video cards. Do so at your own risk!

FYI, i used the 742/1836/1000 non voltage change bios

Enjoy




Before and After

Before stock bios but bios modded to 742/1836/1000

3dmark06 = 18,842 http://service.futuremark.com/compare?3dm06=4397853

click image for full screenshot



After bios modded to Exact Mode Extra VID = 1.22v with 742/1836/1000 clocks. Then overclocked to 756/1836/1000 using Rivatuner 2.06 for 2nd card and Ntune 6.x beta for 1st card.

3dmark06 = 18,944 http://service.futuremark.com/compare?3dm06=4435069

click image for full screenshot



Seems only SM3/HDR score benefited from the GPU clock bump from 742mhz to 756mhz