If you refer to your compter as a 2002 model or the like, here is a decent upgrade that is damn cheap. I am getting reports around that this motherboard will do 250 mhz with good ram.
http://shop2.outpost.com/product/4705559
For 80 dollars you can have a pretty rocking source machine.
For anyone turning your nose up on a sempron, here is a review on CPU scaling for modern games.
X-bit labs
http://shop2.outpost.com/product/4705559
For 80 dollars you can have a pretty rocking source machine.
For anyone turning your nose up on a sempron, here is a review on CPU scaling for modern games.
X-bit labs