inconsistent 5970 clocks

[Bheem]

http://imgur.com/JDNKM.jpg

Anyone have anything similar? I really don't know what to think. Upon first boot into windows they're fine, both running at proper speeds and then after 5 or so minutes of furmark the first gpu takes a breather and doesn't get back up 875/1200 (stays at 400 / 900) and lowers its voltage to 1.000v as opposed to 1.274v.

Edit:

PS: She is on water. Peaks around 35C, VDC's are all good.
PPS: The first gpu stays at 100% load and downclocks but the second is at 70% load and is running at full clocks...?

[learners permit]

I vaguely remember reading somewhere about a coldbug on the 5970's at about 35c and a few complaining about water cooling the card. Here http://forums.techpowerup.com/showthread.php?t=123953
Tested with reference cooler on mine and no such problem but my core hits 92C max.

[stureah]

are you running any other programs in the background?

I have 2 5870's in crossfire, and they crap out to 400/900 when I'm running a flashvideo(youtube).. it will not get out of that state until I close the window.

thought my problem was OC related, but nope.. my cards are WC as well.. load temp never goes over 47°C..

[japamd]

Does it happens when you run the test in fullscreen mode?

CrossfireX doesn't work properly in windowed mode.

[stureah]

I haven't tried furmark in fullscreen, but I tried crysis and it did not change the clock

will try again later today. still at work

[Kryja]

...I have 2 5870's in crossfire, and they crap out to 400/900 when I'm running a flashvideo(youtube).. it will not get out of that state until I close the window.

thought my problem was OC related, but nope.. my cards are WC as well.. load temp never goes over 47°C..

Try disabling hardware acceleration for flash. Another member had trouble while trying to run Milkyway@Home and watching videos on youtube, it was erroring out the work units. Disabling this eliminated the problem for him. His card was running 900 / 1200

[stureah]

just tried running in fullscreen.. still "broken" clocks but at least it's an easy fix.. haven't disabled hardware accel, but it'll probably work