Level up your laptop with Samsung M471B5273CH0CH9 4GB DDR3 laptop memory. This third generation double data rate memory helps feed the ever-increasing bandwidth needs of high performance processors. Running on a 1333 MHz bus, each module provides up to 10.6 Gigabytes of bandwidth for each memory channel. Just slot it into an industry standard 204-pin SODIMM memory spot and let the computer fly. The more bandwidth your computer has, the more data it can feed the processor and high processor speeds only matter if they can get enough data to do something every clock cycle. Moreover, at only 1.5 Volts, this system RAM is easy on your battery so you can stay on the road longer.