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16GB DDR4-2133-MHz RDIMM/PC4-17000/dual rank/x4/1.2v
2.13GHz Xeon E5506 80W CPU/4MB cache/DDR3 800MHz
8GB DDR3-1333MHz RDIMM/PC3-10600/2x4GB 2R Kit
8GB DDR3-1333MHz RDIMM/PC3-10600/2x4GB 1R Kit/Low-Dual Volt
Intel Xeon E5606 2.13GHz /4c/80W/8MB cache/DDR3 1066MHz