Science fair project

[rockstone1]

I'm working on a science fair project that involves overclocking. I have two old computers (pentium III 700mhz and a Pentium III 500mhz) and I will overclock the Pentium III 500 mhz until it won't start up due to heat.

Anyway, I'm going to find out at what point does thermal shutdown usually occur, and I want ideas about unlocking the bus speed settings (the 500mhz has a set of bus options I can select, which annoys me to no end because I can't unlock it.) When I get a chance, I'll find out the name of the bios.

I choose you guys because most of you must remember overclocking your now 9 year old computer!

 

[rags_20]

What board do you have? Maybe you can do it with software like ClockGen

 

[Unolocogringo]

You will probably reach fsb limitations before you reach thermal limitations.
I ran a 550e @869 for a long time (158 fsb). The overclock was limited by the motherboard not heat.
Next was the P3 1.26 Tualitin processor. Which was limited by the memory. The best I could get was 1583 @ 167fsb My memory would not run any faster than that. I could boot at over 1600 but would eventually get a blue screen from memory errors..
Your best option would be to run with an undersized heatsink or a heatsink with the fan unplugged. This would allow the processor to run but eventually overheat. Shuttting itself down.
Run a program like speedfan set to update at 1 second intervals and logged to a log file. Run this several times to get an average shut down temperature. Plug the fan back in and check your log files for results.

edited for typos