Coppia Mac Pro 12 Core 2009 X5680 3,33 GHz XEON CPU 4,1 kit aggiornamento delidded 5,1
Mac Pro 2009 4,1 (to 5,1) Delidded CPU Install Guide (x5680 x5690 12-core CPU Upgrade). No residues of solder, thus much better thermal conduction. Only intended for Mac Pro 2009 dual CPU model.Need upgrade to 5,1 firmware before install.