Vapochill is a sort of phase change cooling- it use a refrigarent with a boling point of -50* or so, and compresses it into a gas, and when it comes into contact with the evap. on the CPU, the gas expands and warms, taking the heat of the cpu away with it.
to get 3Ghz with a 3000, you would need a good mobo- DFI is the OC'ers choice, Ultra Ds are cheap and OC like beasts- some fairly good RAM (Cas 2 @ DDR-400) to put on a divider, a very good stepping CPU, and either high-end watercooling, or phase change.
If you were to use an Opteron 144, they cost the same, FX-57 speeds can be seen with a $24 HSF-