i am trying to oc my amd 945 to around 3.8 am using 2 x 4 gig gskill ripjaws ram, zalman 9900 heatsink, asus m4a77td for a mobo, a antec 900 case and i gig gts 250 vpu. my problem is that it is not stable much past 3.4. my mobo wont let me overvoltage at all (dont know why) and am not sure if it is a memory issue or bios setting issue. have read "sauces" article and did all that no luck to get the max. thank you in advance