LiegeKiller

So you think it's an issue with the vBIOS on the cards rather than something else? Is it possible to do that even when the machine doesn't POST?

Hi guys, I've got an R1 M18x, and I've just swapped out two 6990m for a pair of 780m. I flashed the BIOS to unlocked A05 before I swapped and the change seemed to go well...until I tried turning it on. Screen black, and all I'm getting is two short beeps. I've taken the ram out, swapped the order etc but to no avail. Any idea what the issue could be? Thanks for any help, Mark.

I've been sent Liquid Ultra rather than IC Diamond. Anything I should watch out when applying this, or is it relatively straightforward?

Ok, everything has turned up now but they've sent me Liquid Ultra rather than IC Diamond. Anything specific I should know about applying this two the chips?

Is that true? I thought the 880m was more than just an upclocked 780m?

Did you ever figure out the cause of this? I've a 6990m Crossfire setup and I think I might have a similar issue. Sometimes when I've started the machine up I notice I'm getting awful performance - it's usually because I'm not in Crossfire mode because the power brick is off. Now, it might be because I didn't plug it in properly in the first place, :-), but sometimes I'm sure it was on.

Hi guys, I'm about to take the plunge and swap out my 6990m Crossfire with a 780m SLI set up. Got the cards, heatsinks and SLI cable all ready to go. Just waiting on my IC Diamond thermal paste and getting the courage up to flash the BIOS with the unlocked A05 (if that is needed for the system to recognise the cards?)

Do you need to flash the vBIOS? I thought you could run them on stock, but obviously serious overclocking is out of the question.

So is the unlocked A05 BIOS required to run a 780m in a r1 M18x?