Sign in with
Sign up | Sign in
Your question

PCIe clock adjustments w/ multi card set ups

Last response: in Graphics & Displays
November 23, 2009 8:07:11 PM

Recently I encountered an issue with AMD Overdrive (I don't use it for tuning rather checking certain things) which caused issues with the PCIe clock speed. I've altered the BIOS from it's AUTO setting to 100MHz (regardintg the PCIe clock speed) but will this have any effect when I run multiple video cards (CrossFire)? See I was only running 1 card before and am about to put another card in but am concerned about some issues that may occur.

When I run 2 cards it's not like the cards get split and I'll have to increase the PCIe clock speed?

System contains
Gigabyte AMD 790FX motherboard
Gigabyte ATI 3870 (with another to be added today)
AMD 9950 Phenom
November 24, 2009 6:19:24 PM

Anyone able to give an answer? About to put the 2nd card in now.
December 4, 2009 5:34:55 AM

Nevermind, I found the solution at a better forum elsewhere.
Related resources
December 11, 2009 6:38:01 PM

Just wondering, what was the solution?
December 11, 2009 10:09:32 PM

scurvywombat said:
Just wondering, what was the solution?

The software running on my board is a bit strange so I'm forced to set the PCIe clock to 100. I never had an issue before but I did change graphics cards. Having set the clock to 100 it means that AMD Overdrive cannot modify that setting and that it is stable.