Model:longdimm-ddr1 8 bits Capacity:512mb/1gb/2gb The standard frequency:1066/1333/1600mhz Application: desktop Type: ddr long-dimm Digit:8 bits Vdd:1.8v(+/-0.1v) Ic chips brands: brand or oem, original chips Warranty:5 years Retail packing or bulk packing(50pcs/box)