hi all, i have 6300 (L2) and a Pb5Dlx and have managed to oc my rig to 2.8 (1:1 RAM 400MHZ BUS) but it seems i have the same problems as TORTEL user here in XS, i cant pass the 420MHZ wall i have G.skill F2-6400CL5D-2GBNQ 2gb RAM. Now since ive been reading it says it not good overclocker this ram i got. so i strarted tweaking the timings sinse i think i wont go over the 400mhz bus, and LOL i manage to get these intresting timings on a 1.9v 4.4.4.12-2-35-3-9-6-9 i have test my ram with Prime and done 8hours no problems at these setting, i understand these are very tight timings (btw are these D9 micron chips?) but sinse i can do so good with timings what can be my problem with the 420+ wall, should i try 500mhz with 2.1v and if i do, do i need to air cool my ram? at that voltage? (and of course lossen timings)