i5 3750k, Z77-D3H overclock 4.4 ghz help

rmonkey100 · 19 Mar 2013 at 11:38

Hi, I have been experimenting with OCing the i5. I have been just changing the multiplier and setting a fixed voltage, and I found that 4.4ghz on 1.28v fixed was stable with high temps of 65ish during prime test. But I wish to change it to offset voltage to try and lower the volts and while it is idle, and not needing max power it will automatically reduce, what kind of volts should I be looking at for an offset voltage? help! I am also using a cooler master 212 cooler

wazza300 · 19 Mar 2013 at 12:16

try with bclk set to 100
cpu volt response to fast
pwm phase control set to extreme
cpu voltage set to normal
dvid(offset) set to +0.015v for now
and loadline calibration (llc) set to high
leave everything else enabled or on auto and just set the cpu multiplier to 44x

if its unstable try dvid +0.020v

rmonkey100 · 19 Mar 2013 at 12:25

ok thanks, ill try, the LLC,there is like 4 different settings? core LLC, DDR LLCc, GPU LLC, n another i think?

wazza300 · 19 Mar 2013 at 12:27

it will be this one,but set it to high not medium

vcore loadline calibration

keep an eye on temps at load,stay below 80c and 1.4v cpu voltage

Doomedspeed · 19 Mar 2013 at 12:27

i assume it'd be core LLC

rmonkey100 · 19 Mar 2013 at 12:38

thanks! ill have a play with these settings

rmonkey100 · 19 Mar 2013 at 13:38

I tried those settings and these are my idle results.

These are been tested with Prime, do the voltages etc look okay, could they be improved further? thanks

wazza300 · 19 Mar 2013 at 13:55

yeah try with medium vcore loadline calibration now,keep all voltages the same,it should lower cpu voltage at load

rmonkey100 · 19 Mar 2013 at 15:18

just tried with medium core LLC, blue screened on start up, gone back to high, any suggestions?

wazza300 · 19 Mar 2013 at 15:42

ok try with +0.015v dvid and see what load voltages are in cpu-z,if still above 1.28v

try with +0.010v dvid

you wanna aim for 1.28v cpu voltage at load,

rmonkey100 · 19 Mar 2013 at 15:54

I was using +0.015, just been playing skyrim with that and it bluescreened about 15mins into it hmm, on stress test its hitting 1.28v at max stress

wazza300 · 19 Mar 2013 at 15:57

you probably need a bit more dvd then,esp if its crashing in games,it usually means you need one/two clicks more dvid

try +0.020v now and go to +0.025 if it crashes again

its down to finding a stable voltage in games now,as it can be stable in stress tests but fail when gaming on ivybridge

rmonkey100 · 19 Mar 2013 at 15:59

right ok thanks ill try that

rmonkey100 · 19 Mar 2013 at 16:35

seems stable in games at +0.020, if i wanted to overclock it high, would i just increase the multiplier and slowly increase the core LLC?

wazza300 · 19 Mar 2013 at 21:08

no youd use a touch more (only tiny amounts) of dvid and maybe a higher llc level

cpu voltage you would leave on normal to allow dvid adjustment