Mac Pro "Quad Core" 2.66 MB871LL/A (R2/Ready for Resale) Intel Xeon W3520@2.66GHz, 16GB DDR3 RAM, 1TB HDD, NVIDIA GeForce GT120, 8X DL SuperDrive19 inch Apple Monitor - Used - Walmart.com
Intel Xeon W3520 2.66GHz Quad-Core (AT80601000741AB) Processor for sale online | eBay
INTEL XEON W3520 2.66GHZ SLBEW QUAD CORE SOCKET B LGA1366 8M CACHE CPU | eBay