It is designed for use with a LGA775 socket type and has one core.
Intel Pentium 4 Processor 640+ 3.20GHz LGA775 Brand New And Sealed Vintage CPU
Intel Pentium 4 P4 2.8 GHz 512K 400MHz SL7EY Processor Socket 478 Desktop CPU
Intel Pentium 4 520 SL7PR SL7KJ CPU Processor 800 MHz 2.8 GHz LGA 775
Intel Pentium 4 SL6PL 2.20GHz 512KB 400MHz Socket 478 Processor - Northwood Core
Intel Pentium 4 HT 3.2E SL7B8 3.2GHz Socket 478 CPU
Intel Pentium 4 3.0GHz Northwood, Socket 478, 512KB Cache, FSB 800MHz, SL6WU
