Intel Pentium 4 571 3.8GHz 800MHz 1MB Socket 775 CPU Intel Pentium 4 571 3.8 GHz 800 MHz 1 MB Socket 775 CPU General Features: Intel Pentium 4 Processor 571 3.8 GHz CPU speed 800 MHz bus speed 1 MB L2 cache 19 bus/core ratio 90 nm manufacturing technology E0 core stepping 115W thermal design power 72.8 C thermal specifications 1.25V - 1.4V VID voltage range Socket 775 Hyper-Threading Technology