So what is a good speed for OCing then? Is 875/602 a decent speed? MSI Afterburner is crashing on me, so I have to use the limits set by CCC. The top card is running at 77 C, while the bottom is running at 70 C at those speeds. Is this safe for long term use?
P.S.: I have another fan that will bring them both down to about 67 C.
Don't use the temps generated by afterburner, it only shows core temp, not shader temp. Use HWINFO32http://www.hwinfo.com/download32.html
Run this in sensor mode, no need to use the exe, just download the zip file so you don't need to install it.
Most AMD/ATI cards have another sensor for detecting shader temps, which during mining is up to 10C higher than core.
I personally don't ever like to go above 65C though most cards are rated somewhere between 90-100C but that isn't for continual use. Heat slowly destroys the card, higher the heat, the faster it dies.
If you set the airflow properly you can cool a 5830 to 55C 24/7 on air in a cool room, even when overclocked to CCC's limit on core speeds.
I don't know whether that speed is good for your card, though in my testing 5830's seem stable at "(Core speed) X (0.65) = Memory clock
Again, at least with my findings.
Good info. Thanks for explaining that!
Thanks for the courtesy.