OK so, I cannot test each stick individually with OCCT since it requires over 1GB of FREE ram, which with vista is not possible. With the two supposed good sticks in (4GB), it fails a 2h RAM test within minutes....but it will pass the 1h blend test fine. Windows continues to work fine without BSODs or restarts, wondering wth is going on here. The ram test failure was at 4-4-4-12 timings which I remind you are the SPD rated timings @2.1V for these corsair sticks. I put all 4 sticks in just to try and it also failed the ram test within minutes. What to do from here?