I have an old computer....an Intel P1 @ 166mhz, slow, but I'd like to overclock it to a 233+. The BIOS doesn't dupport changing the CPU voltage....is there any other way?
Please don't say that OCing it will give me very little gain...
all kidding aside, 166 to 233 is just not significant enough and if you can't jumper the voltages because your bios will not support it, then you will not be able to do it any other way... at least not one that I am presently aware of.
You don't always need to modify the voltage anyway, quite a few older chips would run quite happily with either an increase in FSB or CPU Multiplier or a combination of both (back then CPU's werent multiplier locked)
It will be a case of locating the relevant jumpers on the motherboard and trying different combinations of settings. First step on an older board would be to try uping the multiplier as most older boards probably won't support FSB's higher than 66Mhz anyway. iirc a P166 has a 66Mhz FSB and a Multiplier of 2.5, if you can find the multiplier setting and change this to 3 then you'll get approximately a P200 speed from it, 3.5 for 233 speed.
If you can post the motherboard make/model we should be able to track down a jumper manual for it hopefully.