Ivy Bridge Overclocking Guide (Extreme LN2 Section Guide Included)

[I.M.O.G.]

Thank you for the experience.

[dinos22]

lol yeah cause you're such a noob, i didnt test anything below 110 bclock

[sin0822]

Originally Posted by dinos22

lol yeah cause you're such a noob, i didnt test anything below 110 bclock

haha true.

[oanvoanc]

tested some chips and the cbb seems to vary between cpus in case of the minimum "possible" bclk.

3570k: min bclk without cb issues: 103,8
3770k: min bclk without cb issues: 102,5

another chip didnt even boot below -130°C with bclk 105+

[sin0822]

THank you!!!!!
yea I only tested one for its lowest, but it seems to stop after a certain point for the CB to be fixed. Which is good I think.

[cowgut]

Thank god my chip at least made it to -67c on dice only 5.5 dx9 3d but its good that i dont have a chip like my i7 940 that cbb/cb @-20c...you guy were scaring me.

[der8auer]

I had some weired things going on with my 3770K (retail E1).

I benched with full pot and no CB/CBB at 104 BCLK. After a few restarts I suddenly had a CBB at -80°C. Also lifting the BCLK to 107 didn't solve the problem.

Yesterday I benched again with exactly the same settings also 104 BCLK and the CB/CBB was gone...

That happened twice now and I got no idea what causes this issue.

Board is a Z77X-UD3H

[dinos22]

hey mate

nothing abnormal there!

i cover this in my video. A lot of CPUs have two different CBBs, actually there is a third one which we address with benching bios so as long as you are on benching bios there are two you have to be aware of. Each CPU is different but majority seem to respond the same

1) initial CBB -75C to -85C on most chips, this is due to bclock and possibly other things so that is the reason i start my settings at -75 or so and go from there

2) CBB after benching crash at full pot > usually dead on around -150C. Most chips need to be warmed up to -150 and started. my main benching chip doesn't like to be warmed up to -140 for example or if i start the setup at -155 it will then go into second CBB (-80C, painful) so as long as i repeat the process and start it at -150 it will fire up every time.

i also disable iGPU as i noticed it can cause the initial CBB after crash

one other thing to be mindful of is if you bench and crash, hit reset right away and sometimes it iwll boot cycle back into windows with full pot without shutting down (extreme bios behaves a bit better here, as it does with bios changes at low temps)

[der8auer]

Hey dino

Thanks for your answer! Didn't check your video yet but will later today when I'm home.

That's good to know. Will try your tip with hitting the reset button. I can also confirm that my CPU doesn't want to startup at arround -170°C when. Have to heat up to -160°C to get it started.

[Mafio]

the question is: where can we get these "overclocking BIOS"?