8GB -2X4GB- Memory Ram Compatible with HP/Compaq Workstation Xw8600 Series Ddr2-Pc5300 Fb for Server Only by CMS B54

Compatible with HP Part Numbers 397413-B21 (HP/Compaq); 397413-S21 (HP/Compaq); 442823-B21 (HP/Compaq); 461828-B21 (HP/Compaq); EM161AA (2pcs) (HP/Compaq) CMS brand, CMS is one of the most trusted names in the Computer Memory industry and this product carries a Lifetime Warranty from CMS. Compatible with: HP/Compaq Workstation xw8600 Per HP, DDR2-800 memory is supported ONLY with dual processors at 1600MHz FSB. Per HP, the modules must be installed in the following sequence of sockets: One Kit = Sockets 1 & 5 Two Kits = Sockets 1 & 3 and 5 & 7 Three Kits = Sockets 1 & 3, 5 & 7, and 2 & 4 Four Kits = Sockets 1 & 3, 5 & 7, 2 & 4, and 6 & 8 Maximum configurations require a 64-bit operating system.