Originally Posted by Mellifleur
your getting way to hot for stability, 55C is pushing it lol.
these chips don't like 50C+ when overclocked. and with 55C i think that is the limits with your cooling so you probably are going to need water cooling over your mugan3 (impressive as it is wow huge lol). i would recommend something around a TT water Pro or Antec Kuhler 960 as a bare minimum. anything under these is simply not enough. optimally a fully custom water setup. comparatively with 4.2Ghz at 1.5v im getting 27C idle at and 42C on load. (32 mil hyper pi/cinibench)
i don't use prime
because its unrealistic like furmark, it doesn't really tell if your stable just that you can overheat and overtax your system. prime would be relevant if you DO plan on the overclock being run 100% full load 24/7 which is really just a matter of keeping the proc cool
i generally try to see if im stable with increments of hyper pi from 1 mil up to 32 mil then do a cinibench and a 3dmark play some crysis 3 for a few hours to see if it can handle the overclock and to verify that im actually gaining something tangible like FPS.
get a pad of paper and a pen/pencils then..
* set your fsb and ram to stock speeds
* set the bios LLC settings all to auto or high, not extreme ultra or anything crazy. set the cpu over-current to like 110%-120% sometimes more helps, sometimes..... set the cpu-nb over-current to 110%-120% as well, generally i don't need more then this. and higher settings usually cause overheating-instability. but do experiment.
* set the ram timings to auto, force 2T, give the modules around 1.65v maybe a little less to start (1.55-1.6), then up the voltage if it helps stability.
* use just the multi to go to 4.2 and play with the vcore and cpu-nb voltage, try to see if little adjustments can get you stability with less heat.
* increase to 4.3 and play with the voltages some more, pay attention to heat if it seams like no matter what once you hit a certain temp (like 55C+) and BAM, then you know your at the thermal limit.
* inch your way to 4.4 on just multi
, find the minimum voltage balance between core and nb voltage needed for stability try keep it under 50C.
* once you find a stable 4.4 on just multi, tune it, start with the fsb, then do ram timings, prioritize timings over RAM speed to a certain extent.
* this tuning process is painful and long, basically just keep playing till you find the best mix of high FSB (2800+ is optimal) and tightened timings, in games and most apps you will see better performance with sexy timings and high FSB then just straight ram speed.
* my fsb goes right to 2800 and 3000, it tops out around 3200 with painful volts (even with no overclock). as soon as i break that 4ghz barrier my fsb struggles with stability at 2800+ speeds, 1.35v cpu-nb seems good up to 4.4 past that all hell breaks loose on the fsb.
* my saberkitty tries to course an obscene 1.5v through the cpu-nb if i just "set" the fsb to 3000 and leave the cpu-nb voltage on "auto" beware of these heat inducing oversights.