The safe limit for processors is typically 50°C or so, but I have found that my CPU likes to do up to 100°C. I have got these readings from SpeedFan 4.42. I have a Intel Quad Core unclocked. I am using the standard intel fan with heatsink that came with the prossesor My case is a Cooler Master and I have two fans installed on the case. I took the side off to see if that helped. It lowered the temp be 3C.
I don't really want to blow the processor and I don't know how to cool it down.
I applied some fresh thermal paste and it refused to boot up. After an hour of messing around with the wires it now works again. sill geting the same tempurature readings though but i officialy dont care anymore. it hasnt died yet and and hopefully never will.