Possession of a VAIO SVS 1311 "only" 4G RAM ° I had to boost a little. Sony prices were prohibitive, I fell back on this little barrette in Kingston (the same specifications). 5 minutes to install it and that's it. Memory immediately recognized by Windows Seven (64bits), no problem. It allows the system to blow a little less and use the hard drive as a buffer. So, given the investment (22) is to be money well spent for the performance achieved. Recommended.