AMD Athlon-64 X2 Dual-Core 4200+ Processor Socket 939 (ADA4200BVBOX) Provides full-speed support for x86 code base for uncompromising 32-bit performance, ready for 64-bit applications HyperTransport technology for high speed I/O communication Large high-performance on-chip cache 2000 MHz system bus 14.4 GBps total delivered processor-to-system bandwidth