So, a while ago I've built a system with a GA-X79-UD3 and 2 sticks of G.SKILL Ripjaws X Series 8gb. For about as long as I've had the build (since november), it's been really dificult to start the computer up. It would take about 5 hard restarts to get it going. Most of the time the fans would stay on, but nothing would happen, sometimes I get 3 short beeps or 1 long and 3 short beeps. The beeps indicate that there's a memory issue. However, I did run Memtest and the results were fine.
Could it possibly be that slight voltage difference in between the motherboard and the Memory, or some other incompatibility issue?