Quote Originally Posted by Scaniris View Post
Are you sure you can't mount the stock cooler on a very clean manner to claim for RMA?
Sure I can, but what am I gonna say? That the card has a coldbug at +35C and therefore doesn't work with water cooling?
The are either gonna laugh or go WTF.. I mean I wouldn't believe it either if I hadn't verified it like a hundred times now.
Remember, the card runs perfectly fine using the stock cooler (because temps are never that low to begin with)

Yet another one claiming no problems with Powercolor 5970.....how about giving jcool the Master and Slave bioses so we can test them out.

I don't think the 5970 is more sensitive to cpu overclocks. The fact that you have already had lockups when watercooling the 5970 isn't a good sign though.
I already tried the Sapphire and Asus card bioses to no effect. ATIFlash reported the same ucode and build date anway so I guess the bioses are all the same just with a different subvendor ID.

edit: guys that are having problems should try stock cpu clocks / voltages to rule out that possibilty. if it works then, time to start dialing in your stable overclock.
Always a good idea, yeah. I tried stock settings when I was having trouble right from the beginning. Obviously didn't help though, especially since my OC is 24h prime stable (needs to be because that machine runs WCG 24/7 and is also my "work-PC" ie needs to be reliable)

As of now, I am pretty much out of ideas here. I'd appreciate it if anyone else having mysterious lockup issues with the 5970 on water could check if their card also has a "warmbug".