The transition of the enthusiasts? favorite Athlon 64 processors to the new cores manufactured with 90nm production technology started over half a year ago. The 90nm K8 Winchester core is now widely used in Socket 939 Athlon 64 processors with the 3000+, 3200+ and 3500+ performance ratings, and in Socket 745 Sempron processor family. However, Winchester didn?t manage to completely oust the 130nm cores from the previous generation Athlon 64 processors.
There are multiple reasons for that but the major one lies with the insufficient frequency potential of the Winchester core. Even though it boasts much lower power consumption and heat dissipation than its 130nm predecessor, the maximum actual working frequency of the processor based on Wi8nchester is only 2.2GHz. That is why the top Athlon 64 models as well as Athlon 64 FX-55 with 2.4GHz and 2.6GHz core clock rate are still based on the old Newcastle and ClawHammer cores manufactured with 0.13micron technology.
AMD Athlon 64 3800+ Venice