AMD's Athlon64 4000 and FX-55: Nails in the P4 EE's Coffin?

Athlon64 FX-55

As mentioned above, the Athlon64 FX-55's 2.6 GHz speed was made possible by squeezing even more out of its 130 nm manufacturing process.

Features and technical data remain the same as with the FX-53 except for a 200 MHz faster core clock speed at 2.6 GHz rather than 2.4 GHz. With the introduction of the FX-55, AMD will eventually phase out the FX-53.