Model# BX80546PE2800E Item # N82E16819116180 Specifications: Model: Intel Pentium 4 Core: Prescott Operating Frequency: 2.8 GHz FSB: 533MHz Cache: L1/12K+16K; L2/1MB Voltage: 1.25V-1.525V Process: 0.09Micron Socket: Socket 478 Multimedia Instruction: MMX, SSE, SSE2, SSE3 Warranty: 3-year MFG Packaging: Retail box (with Heatsink and Fan)   Availability: Usually ships in 2-3 business days. 2.8Regular price: $179.00Sale price: $169.00 Special Promo: PC2700 DDR MEMORY: 512MB DDR(+119.99)256MB DDR(+59.99)128MB DDR (+39.99)No Expedite Shipping: Ship in next 24 working hours (+$4.99)No Extended Warranty: 3 Year Yes(+$9.99)No Special Promo: MS Windows OS FULL Version OEM: XP Home(+99.99)XP Pro(+149.99)WIN 2K(+149.99)No Express Mail: Ship out UPS Express Mail delivery time 5-7 Business days(+9.95)No Regular 10-12 business days