I've got an AMD Athlon II X4 620 @ 2.6ghz, with stock heatsink/fan, and while it will happily idle at 35°c, if I use 100% of the cpu to say, render a video in Sony Vegas, the CPU temp (reported by mobo sensor, as AMD K10 sensor is unreliable) goes up to 53°c, and that's the lowest it will get at 100% usage, even while SpeedFan sets the CPU fan speed to 100%. Even if I'm not using 100% of the cpu, and just stressing it a bit by playing the latest FPS game, it still hangs around 50-51°c.
My GPU stock cooler, on the other hand, a Radeon HD 5770, never spins faster than 65-75%. Although it does let the temp go up to 83°c (AMD Catalyst stock fan software).
So am I going to quickly wear out my stock cooler if I have to run it at 100% every time I want to play a game or render something (IE should I try to fix the temp issues using other fans/better thermal paste)?
Or is this perfectly normal, and so are my temperatures, and there's nothing to worry about?
Have I got SpeedFan set up right, or could I let the CPU temp go even higher (like 55-57°c) before cranking up the fan to 100%? 90% is a big difference in noise from 100%, but only a couple of degrees in cooling difference!