8GB DDR3 Memory Upgrade for Dell PowerEdge T20 PC3L-12800E 1600MHz ECC Low Voltage Unbuffered DIMM (PARTS-QUICK BRAND) Capacity: 8GB Form Factor: 240 pin ECC Unbuffered DIMM Speed: PC3L-12800E DDR3 1600MHz Voltage: 1.35v Halogen Free; ROHS; Warranty: Lifetime