Ok, I've told PrimeGrid no new tasks, and allowed MW@Home tasks, on my two Q9300 @ 3.0 w/GT630 384SP Kepler cards.
One of them is still running NumberFields@Home on CPU, should I tell that no new tasks? Are we in danger of an overtake on that project?
Edit: While I've been waiting for the PrimeGrid CUDA WUs to finish up, I've been web browsing, and I ran a CDM benchmark on my SSD. Not long after, the machine froze hard. No keyboard / mouse, even hooking up a wired keyboard and mouse didn't work. Mouse wouldn't light up, keyboard wouldn't toggle LEDs. Hit the reset button on the chassis, and it eventually restarted. Temps didn't seem like they were the problem. Unsure. This PC's mobo is from 2007, maybe it's finally starting to get old. Or maybe I need to notch the vcore up one setting. (Currently 1.22 or 1.23v-something).
CPU temps on the Q9300 @ 3.0 got as high as 74C, video card is getting to 69C, that might be somewhat high for a passive kepler 384SP card. Whoops, just hit 70C on the video card, doing "PPS (Sieve) 1.39 (cudePPSsieve)".
Edit: Froze up again, while I was Aborting the rest of the GPU tasks, so I could get started on MW@Home sooner.
Took it apart, uses some compressed gas on it, wasn't altogether too dusty, although the tips of the fan blades in the PSU had some dust bunnies. Would have to take PSU apart to get those out. Took the side off, before placing PC back into desk cubby.
Edit: Specs for that GPU are here:
http://www.geforce.com/hardware/desktop-gpus/geforce-gt-630/specifications
Max temp 90C, so it's not hitting max temp. (You might think it would throttle if it hit close to that temp.)