Features: 1) RAM type: DDR 333/400 and DDRII 533/667/800,SD RAM 133 2) Total memory: 256MB/512MB/1GB 3) Bus speed: 133/333/400/533/667/800MHz 4) Operating system compatibility: PC 5) Memory bandwidth: PC-133/3200/4300/5300/6400 6) Voltage: 2.6V 7) Warranty: 5-year