How hot is too hot for CPU's?

Melting through the bottom of the case like a runaway nuclear reactor is obviously bad...
BUT! What temperature ranges should be be looking at for standard air cooling with a quality heatsink and fan? I am running the intel provided retail heatsink and fan atm as the much more expensive unit I bought (the SP-94) wouldnt fit in my case at all.
So! Currently at idle my CPU temp is 36c, but it is also a little cold in my house. I have seen temps as high as 55c under load. Anything I should be concerned about as I am overclocking a bit? I am running 220x16 so running my 3.2 at 3.52ghz.
Thanks!

Increasing the FSB provides for better system throughput, but just increasing the multiplier of the cpu does not, therefore, you might want to try decreasing the multiplier when you increase FSB.
The formula is pretty easy. Take the max stable CPU Mhz setting you have, 3600(=225x16), and then divide 3600 by the new FSB value you want to try. The result will be what you should set the CPU multiplier to. Doing this repeatedly will eventually give you the max stable FSB value you can run @ your stock voltages, and then you can try to tweak up your multiplier again. You might have to up both memory and CPU voltages to get past the 3600Mhz total, but only do this one step at a time. You're looking for the MINIMUM voltage increase to achieve stability.
HOWEVER, I don't recommend radical OC'ing to anyone who has only stock cooling, or who has a big heatsink on the CPU only. The whole system needs to be cooled as evenly as possible: CPU, RAM, chipset, motherboard, video card, and should be done BEFORE OC'ing. Otherwise, unless you have deep pockets, you might go broke buying a whole buttload of replacement parts.

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Message was edited by: user9287432

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