661-4315 ECC, ver. 2, FB-Dimm, 1 GB, DDR2 667 - 3GHz 8-Core A1186 Mac Pro NB-2216W Apple part number: 661-4315, Compatible models: A1186-2006-MA356LL/A, A1186-2006, A1186-2006, Compatible Mac info. : 2.66GHz Quad-Core Mac Pro , 3.0GHz Quad-Core Mac Pro , 3.0GHz 8-Core Mac Pro, 661-4315 ECC, ver. 2, FB-Dimm, 1 GB, DDR2 667 - 3GHz 8-Core A1186 Mac Pro Apple part number: 661-4315