8GB 2X4GB Memory RAM Q1855

Apple Mac Pro MC250LL/A (Quad-Core 2.8GHz Intel Xeon Nehalem) compatible MemoryMasters memory 8GB 2X4GB DDR3 ECC UDIMM 1066MHz. Compatible computer model: Apple Mac Pro MC250LL/A 2.8GHz Quad-Core Intel Xeon, Z0LF One 3.2GHz Quad-Core Intel Xeon, MD771LL/A, 12-Core 2.66GHz Intel Xeon Westmere, 12-Core 2.93GHz Intel Xeon Westmere, Z0G8, ME253LL/A 3.7GHz Quad-Core Xeon E5 2013, 4-core Xeon 3500 3rd Gen. Early 2009, 2.66GHz 8-Core Xeon Nehalem, 2.93GHz 8-Core Xeon Nehalem, Quad-Core 3.2GHz Intel Xeon Nehalem, Quad-Core MC560LL/A Mid 2010, 8-core Xeon 5500 3rd Gen. Early 2009, 3.33GHz Quad-Core Xeon Nehalem, 6-Core 3.33GHz Intel Xeon Westmere, 2.7GHz 12-Core Xeon E5 2013, MC250LL/A (Quad-Core 2.8GHz Intel Xeon Nehalem), Quad-Core MC250LL/A Mid 2010, Z0LF One 3.33GHz 6-Core Intel Xeon, 2.26GHz 8-Core Xeon (MB535LL/A), 2.26GHz 8-Core Xeon Nehalem, MD878LL/A 3.5GHz 6-Core Xeon E5 processor 2013, MC561LL/A (8-Core 2.4GHz Intel Xeon Westmere), 3.2GHz Quad Core Mid 2012, 2.8GHz Quad-Core (2009), MD87810 3.0GHz 8-Core Xeon E5 2013, MB535LL/A, 2.66GHz Quad-Core Xeon (MB871LL/A), Z0G1. Please keep in mind that this memory will ONLY work on the models listed above. 15% Restocking fee will apply for non-defective items.