As some of you might know i have just built my rig using the following specs:
Fractal Design XL case
MSI Big Bang Xpower II motherboard
Intel i7 3820 core
Corsair Vengence LP 1600mhz 32gb RAM
MSI Twin Frozr II GTX 580 gpu
Corsair Force 3 120gb SSD x 2 (RAID-0)
Hitachi 1tb 7200rpm HDD
LG blu-ray drive
Corsair AX850 psu
Noctua NH-D14 cpu cooler
Noctua fans throughout the case
I have been attempting to overclock it for stable everyday use, and i think i have finally managed it, after a week of attempts and fitting it around work!
I should let you know that all my noctua fans are in U.L.N.A mode, even the cpu cooler.
I first started using the OC genie button on the MSI board, and that gave me an OC of 4.0 ghz, which wasn't bad, but i wanted to see what i could do. Mind you i have never attempted an overclocking in my life, so this was all new to me! I did plenty research as to how to overclock and what kind of ball parks figures people were achieving.
I initially maxed the multiplier to 43 to give me an overclock of 4.3ghz, but this was no way near what others had pushed it to do.
I then reduced the multiplier to 37 but increased the bus speed to 125hz, which gave me 4.6ghz overclock, this was roughly the figure i wanted to achieve. i had to increase the Vcore to 1.28 initially, but after 3 hours of prime 95 it BSOD'ed.
I then raised the Vcore to 1.30, but again after 4 hours of prime 95 it BSOD'ed!
I then thought of raising the multiplier to 38 and increasing the Vcore to 1.34, to give me an OC of 4.75ghz! And it's stable! After about 12 hours of prime 95 it hasn't missed a beat. I have run approx 2 hours of small FFT, and 10 hours of blend.
, on Flickr
As you can see the average max temp across all 4 cores was 68.5 degrees. I didn't have a room thermometer to read my room temperature, but it is a fairly hot day. Temp about 20 degrees.
So OC of i7 3820, with 125mhz bus speed, 38 multiplier and 1.34Vcore, gives me a stable 4.75ghz. Pretty happy here
I thought i'd share my first OC attempt ever, and see what others have achieved on their cores.
I managed to get stable to 4.875ghz at vcore of 1.38
, on Flickr
Temps accross all cores at full load on prime 95 after 1 hour of small FFT averaged 74 degrees which still isn't too bad.