Not surprising the Pentium 4 needs quite a boost in clock speed before it is able to convincingly beat the Athlon 64 FX55, at a clock speed of no less than 5.2GHz there’s no doubt about who takes the performance crown. And yes, that’s double the clock speed of the Athlon 64 FX55 processor which runs at a mere 2.6GHz. It has to be said though that reaching a 5.2GHz clock speed isn’t for the faint of heart; the motherboard chipset and memory run at their highest supported voltages and are cooled by a plethora of fans to keep them cool. The processor, running at maximum core voltage, is interfaced with the receiving end of a 1/2 hp compressor which releases high pressure R507 gas in the evaporator bringing the temperature down to a freezing -40 degrees Celsius