GPU Overclocking Help

[Dleslie212]

I have a set of MSI R9 280x's running in Crossfire. I am getting a score of 3548 with Unigine Valley, so I decided to try to overclock them with MSI Afterburner a bit to see how much I can bump up the score.

Currently, everything is running at stock speeds.

Clock is at 1020, and memory is at 1500. I tried bump Clock to 1200 and memory to 1700, and I got a freeze while Heaven loaded up.

Any advice on overclocking? How far can I safely push these things? Is the freezing anything to worry about?

 

[JohnPMyers]

Baby steps. Try starting with an overclock of 1125MHz and leave memory alone. Once you've found that to be stable, then slowly increase the core or memory speed a little, re-test, increase (if previous increase was stable), re-test, repeat repeat repeat. Yes, it can take hours to find the optimal settings for your setup.

I'm also pretty sure a jump to 1200/1700 would require a voltage increase. If you left the voltage at stock, this is most likely why you froze.

 

[Dleslie212]

Baby steps. Try starting with an overclock of 1125MHz and leave memory alone. Once you've found that to be stable, then slowly increase the core or memory speed a little, re-test, increase (if previous increase was stable), re-test, repeat repeat repeat. Yes, it can take hours to find the optimal settings for your setup.

I'm also pretty sure a jump to 1200/1700 would require a voltage increase. If you left the voltage at stock, this is most likely why you froze.

The voltage tab on Afterburner is locked, it does not look like I can adjust that at all. Is that an Afterburner limitation, or a gpu limitation?