I currently have 2 x 512 sticks of pc3200 in my pc, today arrived another 2 x 512 pc3200 (same) so I could upgrade to 2 gig total YET when I try to install the new RAM I get error via an annoying voice saying "system failed due to cpu overclocking" I have tried many diff combinations....if I keep one original stick in and one new one in it, it works (giving me 1 gig which I already had) so they will mix, just as soon as I try another slot I get error?? Any help would be grateful? My mobo is A8V Deluxe, thanks, James.