Overclocking in Crossfire

[Skitzer]

Abit AT8 32X Crossfire
AMD 64 X2 4400+ Toledo at 2.5GHz
2GB G.Skill DDR500 running 1:1 250 HTT
(2) X1800GTO in cableless Crossfire
Seagate 7200.10 250GB Sata2

3DMark 05 = 11733
3DMark 06 = 5624

I'd like to get over 12000 in 3DMark 05 and in order to do that I would have to overclock my cards. They overclock fine when running single mode, 580/1150 over the default of 500/1000, but will not overclock while running in Crossfire. Has anyone been successful in overclocking while in Crossfire? If so, how did you accomplish it?

Thanks for any help in advance!

 

[Elfear]

It's more of a pain than SLI from my experience, but it is possible. Use ATI Tool Beta 14 (it's worked the best for me so far). Here is the best guide I've found so far. Follow it very closely.

 

[Golgatha]

Find a stable overclock for each card and then BIOS flash to the lower overclock to both cards. That's the most fool proofed way.

 

[Lonyo]

http://www.xtremesystems.org/forums/sho...b85766b7aecd383839d294f34fe71&t=114340

^^ You can definately overclock them.

The relevant part:

The X1900 is oced from bios and the x1950 master is oced with winclk.

Originally Posted by blind_ripper
kinc how can u clock the cards diffrent ? bios ?

Through bios yeah. Thats why 870MHz is max, cant set higher in rabit