HyperX - Memory - 4 GB: 2 x 2 GB - DIMM 240-pin - DDR3 - 1333 MHz PC3-10600 - CL9 - 1.6 V - ... Kingston (KHX1333C9D3K24
HyperX - Memory - 4 GB: 2 x 2 GB - DIMM 240-pin - DDR3 - 1333 MHz PC3-10600 - CL9 - 1.6 V - ... Kingston (KHX1333C9D3K24 - Non ECC 333 MHz, 2 modules, Technical Details: 1.6 Volt, RAM: 4096 MB DDR3-SDRAM, DIMM 240-pin, 1333 MHz, No ECC, Gold, CL9 (9-9-9) 256M X 64, 2 x 2048 MB