Summary: Purchased this as a matched pair of processors as an upgrade to my Intel mac with 2 dual-core 2.66 processors. Install was fine and Apple's case design aside was smooth and easy. There's nothing I don't like about this processor. The only reason I would purchase another set of these processors is if I were upgrading another first gen Intel Mac Pro tower.
Summary: compared to the xeon 5365 the 5355's are a cheap and very worthwhile upgrade, my geekbench score doubled going from 2 dual cores to 2 quad cores. The install is easy, you will need a 9 inch 3mm hex tool and some thermal paste, be sure to tighten the heat sink bolts lightly or you will get hotspots, also apply more paste than recommended.
Summary: I ordered 2 of these and expected new in box processors. They came in a small plastic case and were very obviously used cpus, however they worked great and seller discounted the items for the mistake.
Summary: I've used a pair X5355 to upgrade my Quadcore Mac Pro 2006, 2.66Ghz to an eightcore machine. It went out very well. The geekbench result raised from the 5300 mark to 9400 points. A great upgrade for a very fair price.
GREAT PRICE! PERFECT PROCESSOR UPGRADE FOR MAC PRO 1,1
8 August 2012
Summary: i have a Mac Pro 1,1 with two 3.0GHz Dual-Core Intel Xeon processors. I wanted to upgrade to two "Quad-Core" processors. I purchased two of these Intel 2.66GHz Xeon X5355 processors after intensive research on which processors would work in my application. I am pleased to report that these replacements work just fine! The replacement process was a breeze and the first boot after was normal.
Summary: Fast and amazingly priced now. I was looking to upgrade my xw8400from my Xeon DC 3.0, since i was updating to more 64bit software; I shopped around and found this chip to be so amazingly fast and well priced - I had to buy @
Good product if you can find it at a reasonable price.
2 January 2012
Summary: Bought these because I wanted a few more cores to support running more virtual machines on my server at the colo (data center). The Woodcrest 5160 CPUs I had were fine, but the X5355 let me go from 4 cores to 8 in the same server, and more cores offset the slight loss of clock speed.