With SLI in certain games like UT3, Crysis, Need For Speed and few others i had sort of slugish, lagging. Crysis was totally unplayable, and now it runs like a champ
My first EVGA card i got a month after 8800GTX was released, and second evga card i got a few months ago. They had two different BIOS versions, so i decided to get and grab the latest eVga BIOS from http://www.mvktech.net/
and all my problems are magically gone
I really enjoy Crysis in SLI...
I created DOS ISO Image you can burn to CD and boot your computer from. Inside CD is the latest nvflash utility and evgabios.rom (Rev 10 for Evga 8800GTX default clock speed, nothing changed or altered).
Command to do bios flash is:
nvflash.exe -4 -5 -6 --index=0 biosname.rom - to flash first card
After it's completed reboot system and then do the second card by typing:
nvflash.exe -4 -5 -6 --index=1 biosname.rom - to flash second card
-4 -5 -6 will force flashing 8800gtx bios for any vendor. I suggest you get appropriate bios for your card.
Use UltraISO to inject additional rom files into this image, and then save it.
After Dos is loaded type R: to access nvflash and other files.