This usually means: SPD Voltage 1.5V and Tested Voltage 1.35Vaccording to this link Crucial sodimms are 1.35v you should be fine with these.

JoãoPaz wrote:...so for more 150 dolars or 133 euros i get a alianware 17 with less ram "16G" equal storage but with better CPU and the more inportant to me .... i can upgrade GPU or CPU...New Alienware 17 R2 has also soldered GPU/CPU

I just upgraded my G750JM to 32GB@2133MHz G.SKILL Ripjaws F3-2133C11Q-32GRSL matched sets of 4 Thanks for the info Scott

if you need 8gb just get yourself a g750JY (better looking , more powerful , more reliable) lol

Nvidia driver version?