ADA3800DAA5CD AMD Athlon 64 X2 Dual-Core 3800+ 2.0GHz Processor ADA3800DAA5CD AMDAthlon 64 X2 3800+Socket939 Dual-Core CPU General Features: AMD Athlon 64 X2 3800+CPU Dual-Core 2000 MHz Frequency 2000 HT Speed 512 KB x2 L2 Cache Socket 939 32/64-bit operating mode Hyper-Transport Technology ADA3800DAA5CD