Quote Originally Posted by PolRoger View Post
I just picked up my E760 from a fellow member here in the "classifieds"... (brand new return from RMA) just this week and I'm also new to the 1366 platform coming from socket 1156. I've got a nice batch 920 (3938B010) and will most likely run my rig with a low voltage overclock ~4.0GHz for a "crunching" 24/7 setup. I've done some testing at 21x200 and 19x~210 but I seem to be having some bclk issues at around 209. I most likely need more voltages. Can any one give me some VTT and IOH voltage ranges to work with for bclk in the 210 to 220/225 range. I'd like to bench the chip at 215x19 and then 215x21 and providing that I'm successful... perhaps even push on from there.

Note: I'm running with vdroop enabled on air with a Noctua and two medium speed fans in push/pull. These are just short stability runs I'm just starting to test the chip.

Low voltage O.C. load:


Low voltage O.C. idle:


200x21 load:

200x21 idle:
Most likely needs more VTT, since your RAM should be able to do those speeds with ease.

I can bench all the way up to 220Blck without raising PCI-E, 1 or 2 more mhz than that and it hard locks. So when you get to speeds around the 215ish range, you might need to up the PCIE to 105 or so.

Only changes I have to make to bench on water is VTT\Vcore\VDimm. QPI PLL\CPU PLL\IOH\ICH I all keep at stock levels.