Originally posted by: Zap
The VIA C3 with the Ezra core wouldn't fry without a heatsink. In fact VIA even put out a video claiming they had one (800MHz Ezra) running for many hours without a heatsink at all in a room set to 22ºC. Also, I've run an overclocked P3 Coppermine without a heatsink. A friend accidentally knocked the computer over, and unknown to me the CPU heatsink/fan fell off. I turned on the machine to make sure it was okay and it booted into Windows. Left it for ½ hour, came back and it was locked. Popped the side off and found the HSF sitting on the bottom of the case. Put it back on and the system was good to go again. I've also seen computers come in at work (repair shop) that were P4 setups with broken heatsink brackets so the heatsink either fell off or was dangling. No permanent harm done. Athlon setups, OTOH...
Link to the VIA video "Beat the Heat"