Intel Pentium 4 processor 521 - 2.8GHz (Prescott with Hyper-Threading, 800MHz front side bus, 1MB Level-2 cache, socket LGA775) - Mac Palace | Mac Parts Store
Intel Xeon 1.8ghz Ppga603 Socket CPU Processor SL5Z8 for sale online | eBay
Xhoba's cpu collection - View details on Intel Xeon 2,4GHz Socket 603