how would i know when to stop?
i dont want to push to far to where i would start seeing artifacts. The guides i have seen online were saying keep raising till you start to see artifacts then shut your system down for a couple of hours to cool down. I dont really want to do that...
Artifacts don't necessarily mean it's overheating, as long as you keep an eye on the temps, you won't do any damage.
As for the stress test, just play 20min of Warhead, I know it sucks, but it's very graphics intensive.