Mac Pro 2009 4.1 Delidded Upgrade Kit a 12-Core 3.46GHz Xeon X5690 CPU SLBVX
Mac Pro 2009 4,1 (to 5,1) Delidded CPU Install Guide (x5680 x5690 12-core CPU Upgrade). Only intended for Mac Pro 2009 dual CPU model.Need upgrade to 5,1 firmware before install. 2 Chem pads (To clean CPU and heatsink).