Crucial 8GB Single DDR3 1600 MT/s PC3-12800 CL11 Unbuffered UDIMM 240-Pin Desktop Memory CT102464BA160B Increases system performance. It is Unbuffered and is non-ECC. It conforms to the industry standard UDIMM layout of 240 pins and is compatible with computers that take DDR3 UDIMM memory. Easy to install Premium quality memory from a trusted brand 100% Tested Limited Lifetime Warranty