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Help! can't get stable Over Clock on i7 4930k

post #1 of 2
Thread Starter 
Hey guys,

I've been working hard on getting my 4930k to overclock to a nice and stable level. I'ved tried basically all Ghz from 4.0 to 5.0 (No POST after 4.7 typically)

If I do get the machine to turn on, it will typically fail instantly when I try to do Intel Burn Test or Cinebench giving me a WHEA_UNCONTROLLABLE error and then forcing the system to restart.

from 4.0 - 4.5 I have gotten the machine to run long enough to perform some ITB's and Cinebenches. I think a lot of the problem is my lack of understanding how to properly overclock and set the parameters in the BIOS but I'm really unsure.

Typically in the bios, I set the multiplier (X) to multiply by the BLCK for the target CPU speed. So for 4.5 I set the mult to 45 and the stock BLCK is 100. I have tinkered with it before but I really didnt net any benefits from this (so it seems). I generally leave the vcore voltage to auto and the vccsa to auto to try and get it to turn on and run a test. I have also tried setting the voltage from anywhere from 1.35-1.495 (I have also noticed in CPUZ that it typically displays .5 higher than what I set in the BIOS) From there forward I leave everything else as it was. I typically use the XMP setting because I don't know how to set RAM timings. Sometimes, It will run for several days and then on a random bootup I'll get "overclocking failed" and won't have to change any settings, just save and restart and it will work for a few more days. Really need some input here.


My gear:

ASUS P9X79 LE Motherboard (bios up to date)
i7 4930k
Corsair H100i cooler
Corsair 750d case
Crucial Elite 2x8GB 1866 Ram Sticks (also have a corsair 4x4gb 1600 set aside to check and see if they work better)
Cooler Master V700 PSU
ASUS GTX 680 2GB GPU
Crucial 256gb SSD
500GB Hitachi mechanical drive
Windows 8.1 Pro

NOTE I have noticed that there will be many occasions where the Motherboard/BIOS will accept the overclocking parameters and the machine will turn on all the way to the windows Log in Screen, at which, I will attempt to log in and the computer will freeze, then I have to turn it off and THEN it will say that overclocking failed.


Please help this noob understand...

Thanks!
post #2 of 2
Thread Starter 
Just wanted to add that I have also noticed that after I log into Windows the loading of desktop icons as well as the startup programs (theres only two: ASUS GPU tweak and Core Temp) take about 20-30 seconds to fully load when previously everything was virtually instant..Starting to get worried I damaged something!
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