7950 reverts to 900mhz when hitting 65 degrees?

[brianmanahan]

im messing around with my new gigabyte 7950, and ocing it a little.

when i put it at 1025/1300, it never goes about 63/64 degrees

so i put it up to 1050/1350 and it starts to hit 65 degrees. and when it hits 65 degrees, it reverts GPU clock back to 900 mhz!

could it be catalyst that is causing this? or something else?

thought about installing the gigabyte OC tool and seeing if i can get more control that avoids this annoying change

 

[Vectronic]

Speculation:

It might be erroring/crashing, it shouldn't be throttling from overheating.

My little 7750 will allow me to overclock to impossible settings, when that happens it will try using those settings, then just defaults back to base clocks (800/1125) or if it gets really annoyed drops down to idle clocks, 300/150.

What happens at 1025/1350?
What happens at 1050/1300?

 

[brianmanahan]

thanks, good idea, i will try tweaking the gpu and mem clocks and see what that does

might also use something other than catalyst and see if that gives more options/info

 

[Alusan]

Did you raise the power limit at all in catalyst? Not sure if it could reset the clocks but it's supposed to throttle the card at least.

 

[tweakboy]

Dont use any tools ,, and tell us if you have this same problem.

 

[Red Hawk]

Yeah, it sounds like this would be caused by the PowerTune limit safety feature. It automatically throttles your card if it detects that it is exceeding TDP; it's actually to make sure the card doesn't toast itself. It's easy to override, just go into the Catalyst Control Center and increase the "Power control settings". Be aware though that you are overriding a safety feature and the real (if minor) risks that come with it.

 

[tweakboy]

Nice your right red hawk, gg