This has been bothering me ever since I started with 400fsb and 7.5x to get the ram in Sync 1:1... (http://forums.guru3d.com/showthread.php?p=2969001) I'd like to reach 3.6 GHz on air cooling with acceptable temps (<65°C). If this is impossible, sh*ts on me... My current settings are these: FSB: 400 FSB Strap: AUTO (think it's 333) multiplier: AUTO (which is 9x on a e8400) Dram frequency=801 MHz (close enough i guess ) timings: auto ai transaction booster and static read control and ai clock twister and such on AUTO (not overclocking ram, so i see no point in messing with these) And now the voltages: vCore: 1.2500 (1.224 in CPU-Z) NB voltage:1.10 (standard 45nm) FSB termination voltage: 1.10 (idem) SB voltage: 1.5 (again, the standard value) vdimm: 1.8 (standard kingston valueram ddr2-800) all the fancy gtl and pll stuff on the standard value to prevent AUTO from changing anything. My system boots, but Prime95 gives an error immediately into testing on the first core... not on the second (even after +-15-30 mins). Is this an indicator of something? I'd like to keep the vCore voltage down (stock cooling and such), but might change some others (like NB and FSB termination) IF they provide me with stable results. So my question to you friendly people is: what to increase? (PS: auto vCore for 400 fsb is around 1.27: IBT skyrockets temps after a couple seconds, so that's a nogo) Please understand a oneline response like "up the vCore" gets me nowhere. Thanks for the help!