FX5900 new bios help

I have a gigabyte FX5900XT and was wondering if I could use the 5900Ultra bios?

I can clock my card to 460/790 but I got a couple of arifacts after an hour of Farcry(bits of the screen went black for a second). All the video settings are at max exept AA which is at low.
Coolbits sets the ram to 810 but I got lots of flashing triangles in 3dmark

Is there a bios that has been modified with lower settings? so I don't risk blowing my card up.

Dear!

I think the memory of your card is high, the default 700 right? So, you can downgrade 750... if the 3D is not frozen in testing then that ok, if frozen downgrade to 430...

Have you need the Bios mod from mind?

I'm using the XFX5900XT Bios mod to 5900 at 300/430/860 ... it's very cool at all resolution for 8xS Antialias...

Email me [email protected] I'll send you.

thanks thaikhoa but I have a couple of questions before I try this mod

What improvement did u get with the new bios in 3dmark/aquamark?

I know I can underclock my memory in windows after I flash the card but 860 seems kind of high. Im a bit worried that I might not get into windows

3Dmark=5915, Aqua=4312 @ 460/790(default=390/700) and they run perfect.