I just want to know what I need to get a Pentium D to 4Ghz on Air. Thats all, I dont want to spawn all these arguements.

I dont care if I have to raise the Voltage. I dont care if I need a 80$ 8lbs Heatsink and Noisy Fan... Just need to know what can do it (on air)

Its not that I dont have the money for water, but I am not at that stage yet to trust me Multi Thousand dollar box with putting water inside it. I just dont have the ability to do stuff like that yet.