Dell 8GB DDR3 PC3 10600 ECC Reg Server Memory

Type: DDR3 PC3 ECC Registered (RDIMM)
Capacity Options: 4GB, 8GB, 16GB (per module)
Speed: PC3-10600 (1333MHz), PC3-12800 (1600MHz)
Error Correction: ECC – detects and fixes memory errors
Buffered: Registered (for better stability in servers)
Form Factor: 240-pin DIMM
Voltage: Usually 1.5V or 1.35V