"Mac Pro 1.1 Change out CPU"에 답변I replace my 2,66Ghz dual-core in my mac pro 1.1 to Xeon Quad X5355 Matched Pair SLAEG Socket 771 2.667GHz/8M/1333. Working fine ! Only in System Information tab you will see Processor 2 x 2.66 GHz Unknown, but Number of Processors: 2 and Number of Cores: 8. Geekbench test before was about 5400 score and after replacement is about 9300. About 4000 scores more !