8GB MEMORY RAM 4 IBM System x3250 M3 4251-xxx XEON DDR3 ECC REGISTER B37 2x4GB,MEMORY RAM 4 IBM System x3250 M3 4251-xxx XEON DDR3 ECC REGISTER B37 2x4GB 8GB, 4251-52y, 4251-62y, 4251-C2Y, Compatible with IBM part numbers 44T1597 (IBM); 44T1599 (IBM); FRU 82Y6440, 4GB 1333MHz Reg ECC x8 Module, Unbuffered ECC DIMMs are limited to TWO Dual Channel Banks (4 DIMMs) per processor,IBM System x3250 M3 (4251-xxx) 4251-52u, 4251-42u, 4251-42y.DDR3 ECC REGISTER B37 2x4GB 8GB MEMORY RAM 4 IBM System x3250 M3 4251-xxx XEON.