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Haswell Overclocking Guide [With Statistics] - Page 967

post #9661 of 19539
Quote:
Originally Posted by chumanga View Post

I see a strange thing happenning here maybe you guys already know that, if i use 1.140v for 4ghz + "LLC 4" BF4 will crash or bsod. If i put LLC 8 the game keep working without problems.

But i see when changing LLC in reality it dont change vcore/vdrop at all, but its interesting than increasing LLC make over more stable here.

LLC won't change vcore or make vcore droop/drop - LLC isn't for vcore

LLC is for VRIN which is the most important voltage for Haswell (or second most important in terms of what must be set when overclocking)
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post #9662 of 19539
Quote:
Originally Posted by Cyro999 View Post

LLC won't change vcore or make vcore droop/drop - LLC isn't for vcore

LLC is for VRIN which is the most important voltage for Haswell (or second most important in terms of what must be set when overclocking)

Sure, i forgot to reread first topic before posting, my bad.
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post #9663 of 19539
Just to let you know how lucky are some of you guys.

I use x264 64bit x20 to test my setups. Uncore stock and a 2400 ram kit @ 1.65v
Never went above 1.30v manual mode. ASUS Maximus Impact VI

Had a first 4670k, couldn't stabilize above 43 kept 42

Swapped for a 4770k, couldn't even stabilize at 42, decided to forget it and put 40 with 1.18v, stable. With small increase in VCCSA.

Tried another 4770k, can't even boot at 44 with 1.28 (even with ram at 2000), booted at 42 but instant crash when starting OCCT. On Stock voltage it reaches 1.3v on load in occt...

I have another 4770k coming (crazy Amazon RMA policy xD), i hope it will be at least capable of 42 stable... if not i will just forget about OC and keep all stock.


Another subject, and I wanna alert you about the Active Frequency mode.
DO NOT EVER ENABLE ACTIVE FREQUENCY MODE
I discovered that with this enabled, my voltage sometimes piked at 1.47v !!!!
Disabling it solved the crazy pikes in voltage. That's absolutely insane, so beware with this, it would kill your chip under load.
Edited by Gugus03 - 2/7/14 at 7:38am
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post #9664 of 19539
You should set uncore 100mhz below stock (33!!) to stop it turbo, and manually set ring voltage, just to be safe. Never set RAM to etc 2400mhz when you're clocking CPU up, too. Can cause BSOD's and you need to know which BSOD's happen why

Aside from that, setting VRIN is important. If you don't set VRIN, it's hard to scale core multi up, certain power hungry tests (like both of the tests in OCCT!!) likely won't work. You need LLC for it too

I don't think people are lucky, they're all just doing stuff differently to you
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post #9665 of 19539
You will see even more so on gigabyte boards, please check SINS guide to understand, that LLC is very important for a stable overclock, I even back on sandy bridge using my ud5h, needed a high or extreme LLC to keep a stable overclock, even if the overclock was low, same results would happen random BSOD'S during games or even regular usage.
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post #9666 of 19539
Quote:
Originally Posted by Cyro999 View Post

You should set uncore 100mhz below stock (33!!) to stop it turbo, and manually set ring voltage, just to be safe. Never set RAM to etc 2400mhz when you're clocking CPU up, too. Can cause BSOD's and you need to know which BSOD's happen why

Aside from that, setting VRIN is important. If you don't set VRIN, it's hard to scale core multi up, certain power hungry tests (like both of the tests in OCCT!!) likely won't work. You need LLC for it too

I don't think people are lucky, they're all just doing stuff differently to you

I just tried to boot at 45 1.28v
Ram @ 1333mhz
Uncore max 33 with 1.1v
CPU input eventual at 1.75 (i read it was vcore +0.45, rounded to 1.75 to be sure)

didn't touch LLC, AITuner says it's lvl 8 (max)

The fact is that my previous chip was doing 40 fine and this one crashes instantly with the same settings in OCCT.

Also, 1.3v on load on stock voltage, stock freq, doesn't seem great at all...
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post #9667 of 19539
Quote:
Originally Posted by Gugus03 View Post

I just tried to boot at 45 1.28v
Ram @ 1333mhz
Uncore max 33 with 1.1v
CPU input eventual at 1.75 (i read it was vcore +0.45, rounded to 1.75 to be sure)

didn't touch LLC, AITuner says it's lvl 8 (max)

The fact is that my previous chip was doing 40 fine and this one crashes instantly with the same settings in OCCT.

Also, 1.3v on load on stock voltage, stock freq, doesn't seem great at all...

Read the 1st page a few times, then read the posts in the various pages that follow it....The easy way of OC'ing doesn't apply to Haswell - you have to work for higher overclocks....wink.gifthumb.gif
post #9668 of 19539
Quote:
Originally Posted by lilchronic View Post

got a new 4770k back from RMA today thumb.gif

That is awesome you were able to get it replaced after a de-lid!
post #9669 of 19539
Quote:
Originally Posted by Gugus03 View Post

I just tried to boot at 45 1.28v
Ram @ 1333mhz
Uncore max 33 with 1.1v
CPU input eventual at 1.75 (i read it was vcore +0.45, rounded to 1.75 to be sure)

didn't touch LLC, AITuner says it's lvl 8 (max)

The fact is that my previous chip was doing 40 fine and this one crashes instantly with the same settings in OCCT.

Also, 1.3v on load on stock voltage, stock freq, doesn't seem great at all...

Try bumping vrin to 1.850 (cpu eventual)
post #9670 of 19539
Quote:
Originally Posted by SgtRotty View Post



Try bumping vrin to 1.850 (cpu eventual)

Tried at 1.9v VIN, 1.3v, LLC lvl 8
Uncore 35 1.2v
VCCSA +0.2
IO Auto
Ram 2400 / 1.65v

It booted at 42 but rebooted after few seconds into OCCT.

My other 4770k wasn't crashing so fast and could handle 30min of occt and 17 passes of x264 until BSOD with LESS voltage... so this chip is out for me.
I just want to get 42-44 with a vcore of 1.25 or less with ram at 2400... if I don't get this I'll just keep my original chip at 40.


I have three 4770k to chose from
- one is stable (20 passes x264 64bit, hours of BF4, realbench) at 40/ vcore 1.18 / VIN 1.7/ ram 2400/ stock uncore
- the current one which i think is garbage, with the same settings I cant OC at all (it goes to 1.30v+ under load, at STOCK settings)
- next one should arrive tomorrow or monday will
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