i tried to overclock my cyrix 233mhz processor using the jumpers, using bus frequency of 33mhz, then clock multiplier of 8. It should have come out to be 264, but the bios show it has 160. I lefted it at 160, but it was really running slow!!! Why did this happen?? How do I exactly overclock this processor?

The defalt bus frequency is 66mhz and the object of overclocking is to rase the bus and maby the multipiler. The bus is called fsb. If your mobo don't have a fsb higher then 66mhz tou will have to rase the multipiler to overclock. Note that the reson for rasing the fsb is to make everything run faster.

actually I forgot to tell you, I tried all the combinations, 30mhz with 5,6,7,8 multipliers, and 33mhz with 5,6,7,8 multipliers, for the combinations that calculate more than 233mhz, it shows as anything less than 233mhz, like 160mhz.

I don't know where you're coming up with the 30mhz & 33mhz unless you're referring to the PCI clock (which is generally 1/2 FSB on older mobos). Cyrix CPUs are Performance Rated...233 is not the actual speed, but it supposedly performs as fast as a 233. Look at the top of the CPU for the actual clock & voltage settings. I believe the PR233 was designed to run at 187.5mhz (2.5 x 75mhz FSB), 2.9 volts. The Cyrix runs hot & is not know to be a great overclocker. Also, I don't know of ANY socket 7 mobos that allow multiplier settings of 7x or 8x...& you can only get a setting of 6x with a K6-2 CPU. What mobo are you working with? I suggest you look it over carefully. If you don't have the users manual, see if you can locate one online. If you have a look at this site, you'll find a few overclocking suggestions... http://www.hwupgrade.com/overclock/cpu/index11.html