get an x2 4800+ and put it on liquid cooling, or if you have the money go phase change, or how about liquid nitrogen? wait I forgot you are making no exceptions, so put it on liquid helium!! With liquid helium, DFI SLI-DR, and some ocz pc-4800 platinum, you could easily get around 3.4 GHz. about 600 mhz faster than a fx-57 and dual core to boot!