Intel Pentium 4 2.80GHz CPU SL66R 512/400/1.5V Socket 478 Processor
• S-Spec: SL66R. • Stepping: SL66R. This Northwood core CPU features a 2.80 GHz clock speed, 512KB L2 cache, and a 400 MHz front side bus. It utilizes the Socket 478 interface and operates at 1.5V. • Model: Pentium 4 2.80GHz.