Originally Posted by rctrucker
For overclocking the 3930k, you should leave the BCLK at 100 or 133. You can push your OC to 101, or 134, but the further you get from the straps, the less likely you are to have stablitiy.
Adjust your overclock through the unlocked multi.
I'm on 104 BCLK now and the system appears to be quite stable. It also appeared stable at BCLK 106, but I did not do extensive testing.
If possible, I'd like to keep the voltage offset functionality, which means using BCLK of 10*. The only reason why I'm playing with pushing the BCLK up from 100 is to get my memory speed up as high as possible from DDR-1600. With a BCLK of 106, this gives be DDR-1696. Anything higher than this and I can't seem to boot into Windows. Even at stock CPU multiplier, BCLK, loose memory timings, various voltages on VDIMM, VCCSA, VTT, the system just won't work at DDR-1866 when more than 4 or 5 DIMM slots are populated (more or less 1 DIMM per channel). I realize that the difference between DDR-1600 and DDR-1700 is negligible. I'm just playing around trying to see where the limit actually is.
The other interesting thing I noticed as mentioned previously is that my video car won't initialize at BCLK higher than 104 when GEN3 mode is selected, but will in GEN2. I've also noticed that using GEN2 instead of GEN3 seems to have no effect on 3D performance. If anything my benchmark scores have been marginally higher with GEN2.Edited by cynan - 5/4/12 at 11:52am