I have two G.Skill RipJaws X DDR3-1333 1.5V ram cards in my computer. A month ago, I bought a third ram stick from best buy. PNY brand. 4GB DDR3 C0MHH-T-HS PO210436. Since I've bought it, Every now and again, I get a BSOD. I get several ones, but the most common, is PAGE FAULT IN NON PAGED AREA. I've also gotten MEMORY MANAGEMETN. and two others I can't remember. I've run memtest on each stick invidivudually and then together, and it detects NOTHING wrong and my computer does recognize itself as having 8gb of ram like it should. I know this ram stick is th eproblem, and I believe it might be because of different voltage? My MOTHERBOARD is an ASROCK 970DE3/U3S3 555xFast model. Is there an incompatibility? or is my voltage not matching?