These RAM sticks work perfectly, I bought with a friend to expand the memory of our respective computers from 4 to 8GB. I use it for a month so far nothing to report :) Beware though, they are indicated as being compatible 1.35V / 1.5V. But the voltage used is of 1.35V. As against this poses no problem with another 1.5V voltage module in Dual Channel. Very satisfied in the end ^^