Crucial Technology 8GB 240-pin RDIMM DDR3 1866MT/S (PC3-14400) Desktop Memory Module, CL13, Single Ranked, Registered, ECC, 1.5V, 1024Megx72 Configuration Crucial 8GB 240-pin RDIMM DDR3 1866MT/S (PC3-14400) Desktop Memory Module - Crucial Lifetime Limited Warranty Type: PC3-14400 DDR3 DIMM Capacity: 8GB CAS Latency: CL 13 Memory Rank: Single Ranked