I'm a fan of overclocking.

Buying a cheap CPU and then running it way out of spec to make it perform similar to a much more expensive chip.

Current chips I'm using:

Q9550 @ 3.4 GHz

E5200 @ 3.75 GHz

E2180 @ 2.66 GHz

Intel E2220

3200 MHz (8x 400MHz)
63C under full load.
Arctic Cooling Freezer Pro 7


5.8 Vista CPU score