Intel Core 2 Duo Processor E4400 2GHz 800MHz 2MB LGA775 CPU, Retail
Specifications:

Mfr Part Number: BX80557E4400
Process Type: Intel Core 2 Duo Processor E4400
Frequency: 2 GHz
FSB: 800 MHz
Cache: 2 MB
Process: 65 nm
Socket: Socket 775
Package: Retail
This processor is a Dual-Core processor
This processor supports Intel Extended Memory 64 Technology (EM64T)
This processor supports Enhanced Intel Speedstep Technology
This processor supports Execute Disable Bit capability