Hi these were all carefully pulled from working units Apple Mac Pro 5,1 A1289 2010 2012 CPU Tray Part Number 639-0460, A1289, 820-2742-A 2010 Year 2010, But also works with 2012 Memory Ram No memory installed (No Ram) Processor 2 x 2.66 GHZ 6-Cores Intel Xeon (12 Cores Total) Processor Dual Intel Xeon x5650 2.67GHz Will pack well and ship quickly
