Hynix HMT451U6BFR8C-PB 8GB 2 x 4GB PC3-12800U DDR3 1600 CL11 Desktop Memory Kit Manufacturer: Hynix Desktop Memory Kit Manufacturer Part #: HMT451U6BFR8C-PB Memory Type: 240-Pin DDR3 SDRAM Capacity: 8GB 2 x 4GB Bus Type: PC3-12800U 1600Mhz