Athlon 64 X2 Processor "Windsor" (Dual Core)
The high-end versions of AMD's Athlon 64 X2 dual cores utilize the 90-nm Windsor processor core (stepping F2 and F3). Windsor type processors are available with 2x 512-kB L2 cache or 2x 1 MB L2 cache, covering the scope of 3800+ (2.0 GHz) to 6000+ speeds (3.0 GHz). While most Athlon 64 X2 processors are rated at a thermal design point of 89 W, there is an energy-efficient version (EE), which fits into a 65 W power envelope.
The most advanced Athlon 64 X2 processors are manufactured in a 65-nm process (G1 core). These "Brisbane" processors are available at 3600+ (1.9 GHz) to 5000+ (2.6 GHz) speeds, which cover the mainstream. All 65-nm processors are rated at 65 W, and we expect both more efficient and faster versions to arrive over time.