The AMD Athlon 64 FX-55 was a desktop processor with 1 core, launched in October 2004, at an MSRP of $827. It is part of the Athlon 64 FX lineup, using the ClawHammer architecture with Socket 939. Athlon 64 FX-55 has 1 MB of L2 cache and operates at 2.6 GHz. AMD is making the Athlon 64 FX-55 on a 130 nm production node using 105 million transistors. You may freely adjust the unlocked multiplier on Athlon 64 FX-55, which simplifies overclocking greatly, as you can easily dial in any overclocking frequency.
With a TDP of 104 W, the Athlon 64 FX-55 consumes a good deal of power, so decent cooling is needed. AMD's processor supports DDR1 memory with a dual-channel interface. The highest officially supported memory speed is 400 MT/s, but with overclocking (and the right memory modules) you can go even higher. Actual memory technology support depends on the chosen motherboard, the processor itself supports multiple memory types, but most motherboards have only one kind of slot. Although the processor doesn't come with integrated graphics, certain motherboards with compatible chipsets can provide this capability. Inside the box you will not only find the processor, but also a Yes cooler.
Neither SSE3 nor SSE4 instruction sets are supported, which will lead to problems with games not starting.