New enhanced Intel P4 660 3.6Ghz 2MB Cache retail Intel LGA 775 Pentium 4 660 3.6GHz 800MHz FSB, 2MB L2 Cache, Hyper Threading Technology - Retail Model# BX80547PG3600F Item # N82E16819116195 Specifications: Model: Intel Pentium 4 660 Core: Prescott Operating Frequency: 3.6GHz FSB: 800MHz Cache: L1/12K+16K; L2/2MB Process: 90 nm Socket: LGA 775 Multimedia Instruction: MMX, SSE, SSE2, SSE3 Features: Support Intel EM64T, XD Bit, Enhanced Intel Speedstep Technology Warranty: 3-year MFG Packaging: Retail box (with Heatsink and Fan)