This lot of 2 Hynix DDR3 SODIMM memory modules has a total capacity of 8GB, with 4GB per module. These modules have a bus speed of PC3-12800S and a frequency of 1600MHz. The form factor of each module is SO-DIMM, with a model number of HMT351S6CFR8C-PB and 204 number of pins. These modules are ideal for upgrading the memory of your laptop or other compatible devices.