Originally Posted by
DrPop
I do appreciate what you guys are saying, but I'm pretty sure it's not the PSU. This thing is a hog - it has 4 12V rails that do 36A each - or used in tandem, it can load up to 82A and 984W of its 1000W max on the 12V alone. Pretty beefy. I've got the plugins split too, so it's got a separate 36A 12V rail to each plugin, and there are no other cards plugged into the mobo. It's got to be either a conflict somewhere, or what Bryan alluded to - maybe this mobo just can't hack the Volts to the card on it's side of things. I would find that a little strange for a higher end chipset mobo - I mean, this is the 890FX, but you never know.
Right now I'm doing some tests in between patients - I've got it torn apart in the back room, and currently on yet another clean install of windows, and it's doing Prim95 stability tests with the old 5870 in right now, plus the Windows graphics assessment. I'm trying all kinds of different driver versions and whatnot to see if I can get it to do any of the fail(s) with the 5870 in there. So far it's coming out ahead.
If I can't make it fail with the 5870, then I will yank that out in a bit and put the 5970 in there and see what happens this time around. I'll post my progress. Cross your fingers for me.