If you are unhappy with its usage I would recommend running a memtest to make sure that there is no problem with your RAM modules. You can download the software here and it also includes a guide on running the test.
http://www.memtest86.com/
I would advise running this overnight as it can take a while but does a full check and lets you know if there is any problems. i have personally had to use this myself and RMA my old ram modules.