512MB PC2100 DDR266
512MB Module - DDR - Non-ECC - Unbuffered - 266MT/s - PC-2100 - 7.5ns CAS Latency - 2.5V - Lifetime Depot Carry-In Mfg. Warranty
8GB DDR4-2666 ECC Registered 288pin Module
8GB Module - DDR4 - ECC - Registered - 2666MT/s - PC4-21300 - 1.2V
4GB DDR3-1066 ECC Un-Buffered
Samsung 4GB DDR3-1066 ECC Un-Buffered M391B5273BH1-CF800 1Gx72bit chips 240pin 1066/533mhz