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8GB 2X4GB RAM Memory for Apple Xserve 2.66Ghz 8-Core Nehalem DDR3 UDIMM 240pin PC3-8500 1066MHz Black Diamond Memory Module Upgrade - Walmart.com
Would I get dual channel ram benefits with 2x4gb, 2x8gb setup - CPUs, Motherboards, and Memory - Linus Tech Tips