Originally Posted by konspiracy
I have an unlocked 740 and i have it 3552 mhz at 1.44-1.48v
My north bridge is 2695mhz cpu-nb 1.48v with my ram at 1632 cl7 (hyper x 1800 cl9)
8 hours prime blend stable and 1week stable folding.
You need to keep the temps down on these chips.
Also what is your nb volts and how many ram slots have you filled?
Edit: also get a small fan to blow some air on those vrms as it will also help provide cleaner power....
Are you saying that my CPU oveclock is limited by my motherboad's VRM's not being cooled enough?
The NZXT Phantom's 200mm fan right above my MB does a decent job, I could try fitting the side fan (have been considering it anyway) - either a 200mm or 230mm, but my Dark Knight CPU cooler leaves me with only enough room for a 25mm width fan or less - Xigmatek make the 200x200x20mm fans I was considering.
My temps are well within reason - HW Monitor CPU temps hit 55-58 load (I might have seen 61 on a hot day) but the core temps at 7-10 degrees lower (they disappear when unlocking, but equivalent values tested in triple-core mode.
My CPU-NB is @ 1.35v. I've never taken it above 1.4v I don't think.
CPU is at 1.475 or 1.5v, never taken it beyond 1.525v and can only get somewhere in the low to mid 3600s. NB doesn't seem to want to go higher than 2560 without more serious voltage. Starting to hit diminshing returns that simply aren't worth the incremental performance difference.