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Mac Pro "Quad Core" 2.8 (2010/Nehalem) Specs (Mid-2010, MC250LL/A*, MacPro5,1, A1289, 2314-2*): EveryMac.com
Apple Mac Pro (Tower, Mid 2010) 2.8 GHz 4-Core Xeon W3530 MC250LL/A - Specifications - SellYourMac.com
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Amazon.com: Intel Genuine Xeon W3530 CPU Computer Processor SLBKR 2.8 GHz 4.8 GT/s 8M 4 LGA 1366/Socket B : Electronics
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Refurbished: Dell Precision T3500, Intel Xeon W3530 2.8GHz Quad Core CPU, 12GB memory, 500GB hard drive, NVIDIA GeForce GTX 660 SuperClocked, Windows 7 Professional Installed - Newegg.com
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