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Help with overclocking i5 4670k on Asrock Z87 Extreme 4

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October 21, 2013 5:02:30 PM

Okay so when I go into BIOS and select one of the custom OC profiles (4.2,4.4, etc) my PC shuts off right after I exit BIOS and it just crashes...never boots into windows.
I get a '3b' LED error on the motherboard, which I've been told means it's unstable.
I have to press the Clear CMOS battery after to reset the BIOS settings and get it running again.

Before I updated to the latest Bios ver. I could use the 4.4 profile no problem.
But now whichever I choose makes the BIOS crash and unstable O-o
I don't even want to touch that part anymore, and now I'm only running at stock 3.5ghz.
What could be causing this?

For now I think I want to avoid overclocking in BIOS. But I have a few questions.
Is it safer to use a third party program to OC ? So when the PC crashes, it will easily reset on restart ?
Also, can I just increase the multiplier without changing anything else (voltage etc)?
Any programs you recommend? I had AMD before and I really liked the 'AMD Overdrive' program.


Please let me know. Thank you!
Anonymous
October 23, 2013 9:39:27 AM

Try overclocking it manually, bump the multiplier up .5X and see if it helps.

Something in the automatic overclock profile is definatly pushing the system too far.
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October 23, 2013 3:48:45 PM

@hyun - Buddy try this:

(copied from my own post at http://www.tomshardware.co.uk/answers/id-1844643/voltag...)

This is what I would recommend:

Change the Multiplier to 42 or 44 depending on what kind of OC you would like which will make your CPU go to OC 4.2ghz or 4.4ghz accordingly.

Leave everything else on Auto even the Vcore. Load Line Calibration change it to 1.

Boot up the computer and open CPU-Z, Core Temps and Real Temps.

Run Prime95 using the "Small Stress Test" (This will stress the CPU and go to maximum heat very fast, within the first minute it will be make the temp go up faster than the blend test)

Go back to CPU-Z and take a look at the Vcore. This will give you a pretty good idea what your Vcore should be set to.

Restart PC, set your Vcore to offset and set it to whatever Vcore CPU-Z was showing and then stress for some time and see if it crashes.

Also open "Event Viewer" and look for the WHEA ERRORS. If you see any, it means that you are not stable yet even though the PC hasn't crash.

To see WHEA ERROR go to: Start>Control Panel>Administrative Tools>Event Viewer or just search for Event Viewer under Search.

Then go to Windows Logs>System. Here you will see the WHEA ERRORS. If you don't have one after a while then you are stable.

Hope that helps
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October 23, 2013 6:26:10 PM

moshe22 said:
@hyun - Buddy try this:

(copied from my own post at http://www.tomshardware.co.uk/answers/id-1844643/voltag...)

This is what I would recommend:

Change the Multiplier to 42 or 44 depending on what kind of OC you would like which will make your CPU go to OC 4.2ghz or 4.4ghz accordingly.

Leave everything else on Auto even the Vcore. Load Line Calibration change it to 1.

Boot up the computer and open CPU-Z, Core Temps and Real Temps.

Run Prime95 using the "Small Stress Test" (This will stress the CPU and go to maximum heat very fast, within the first minute it will be make the temp go up faster than the blend test)

Go back to CPU-Z and take a look at the Vcore. This will give you a pretty good idea what your Vcore should be set to.

Restart PC, set your Vcore to offset and set it to whatever Vcore CPU-Z was showing and then stress for some time and see if it crashes.

Also open "Event Viewer" and look for the WHEA ERRORS. If you see any, it means that you are not stable yet even though the PC hasn't crash.

To see WHEA ERROR go to: Start>Control Panel>Administrative Tools>Event Viewer or just search for Event Viewer under Search.

Then go to Windows Logs>System. Here you will see the WHEA ERRORS. If you don't have one after a while then you are stable.

Hope that helps


I get really scared everytime my PC doesnt boot from BIOS crash with unstable OC.And then me having to clear CMOS

Does it in any way damage the Mobo? Is there a chance clearing the CMOS wont work?

But I will try this :S

I am using A tuning utility by asrock at the moment. And I don't know, it just doesnt seem stable and my rendering speed got worst. And I dont even see any 'set to defaults' button on this program anywhere ,_,

Right now ,all this OC has been a really unpleasant experience for me. Hopefully I get something good soon.

Thanks for the replies.I'll let you know how it goes.
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October 23, 2013 8:44:44 PM

Hyun18, if it serves as consolation, I got an Asrock z77 Extreme4 Motherboard too. I got many failed shut down, many crashes before I got to 4.5ghz.

you shouldn't have to be clearing the CMOS though, I never had to do it. you should be able to just hit F2 to get to the BIOS after it crashes, since it restarts. the kind of OC that you are attempting should not damage your MB or any other component because that what they are made for. If they break it was most likely going to break sooner or later but not because you did something wrong.

As a clarification, you can damage your components but not by doing the Auto OC thing.

Try what I posted above and let me know how it goes.
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October 24, 2013 12:23:16 AM

moshe22 said:
Hyun18, if it serves as consolation, I got an Asrock z77 Extreme4 Motherboard too. I got many failed shut down, many crashes before I got to 4.5ghz.

you shouldn't have to be clearing the CMOS though, I never had to do it. you should be able to just hit F2 to get to the BIOS after it crashes, since it restarts. the kind of OC that you are attempting should not damage your MB or any other component because that what they are made for. If they break it was most likely going to break sooner or later but not because you did something wrong.

As a clarification, you can damage your components but not by doing the Auto OC thing.

Try what I posted above and let me know how it goes.


Ignore the part about rendering, my mistakes .

But hmm, I dont know. When it crashes from unstable overclock it shuts off right after I exit bios. Then it restarts , and I cant see anything on the monitor " Check video cable" , then it dies again. At that point I just turn it off and reset cmos. But I havent gone further to see if it actually boots back normally.
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October 24, 2013 12:24:43 AM

moshe22 said:
Hyun18, if it serves as consolation, I got an Asrock z77 Extreme4 Motherboard too. I got many failed shut down, many crashes before I got to 4.5ghz.

you shouldn't have to be clearing the CMOS though, I never had to do it. you should be able to just hit F2 to get to the BIOS after it crashes, since it restarts. the kind of OC that you are attempting should not damage your MB or any other component because that what they are made for. If they break it was most likely going to break sooner or later but not because you did something wrong.

As a clarification, you can damage your components but not by doing the Auto OC thing.

Try what I posted above and let me know how it goes.


Ignore the part about rendering, my mistakes .

But hmm, I dont know. When it crashes from unstable overclock it shuts off right after I exit bios. Then it restarts , and I cant see anything on the monitor " Check video cable" , then it dies again. At that point I just turn it off and reset cmos. But I havent gone further to see if it actually boots back normally.
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October 24, 2013 7:42:09 AM

Yeah, you are doing an extra step. Back in the day you did needed to reset the CMOS and occasionally you will have to do it still but for 98% of the time you won't have to do that. Just give it a few seconds after it crashes and it will restart and just press F2 until you get into the BIOS.

There is a second method to OC through the BIOS other than the one that you posted but I want to know if you are willing to try it before I write it up for you.
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October 24, 2013 8:30:28 AM

moshe22 said:
Yeah, you are doing an extra step. Back in the day you did needed to reset the CMOS and occasionally you will have to do it still but for 98% of the time you won't have to do that. Just give it a few seconds after it crashes and it will restart and just press F2 until you get into the BIOS.

There is a second method to OC through the BIOS other than the one that you posted but I want to know if you are willing to try it before I write it up for you.

I would like to know that other way. If you could tell me.Thanks

Edit: nevermind,I just realized in BIOS settings. It's set to restart THREE times before it resets to default.I havent ever waited that long.But now that I know,I changed it to only 2.
I applied the values ,but with the voltage too @ 1.275 .
It worked. Booted up. I ran AIDA and after a few mins it reached 95c . That's high isnt it?
You think I can lower it ? Also should I make the cpu cache ratio 44 too? Right now it's 38 . Thanks!
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October 24, 2013 9:35:32 AM

yeah for a 4.4ghz is running hot. What is your CPU Cooler?

Start fresh from stock multiplier.
as for the other method. Leave the Vcore at offset +0.05
Additional Turbo Boost set to +0.04
LLC (Load Line Calibration) Set it to Level 2 or 3 (Level 2 is 75% and Level 3 is 50%), which means that Level 2 will not let the voltage drop as much as Level 3, in other words vdroop.
then increase the multiplier by 1 (for example from 33 to 34) do this until you are unstable
Once you are unstable increase only the Turbo Boost 1 notch until you are stable again

Doing that I lower my temps from ~90c to ~70c under full load while gaming I was hitting ~60c at most

Anyway, let me know how that goes
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October 24, 2013 11:48:44 PM

moshe22 said:
yeah for a 4.4ghz is running hot. What is your CPU Cooler?

Start fresh from stock multiplier.
as for the other method. Leave the Vcore at offset +0.05
Additional Turbo Boost set to +0.04
LLC (Load Line Calibration) Set it to Level 2 or 3 (Level 2 is 75% and Level 3 is 50%), which means that Level 2 will not let the voltage drop as much as Level 3, in other words vdroop.
then increase the multiplier by 1 (for example from 33 to 34) do this until you are unstable
Once you are unstable increase only the Turbo Boost 1 notch until you are stable again

Doing that I lower my temps from ~90c to ~70c under full load while gaming I was hitting ~60c at most

Anyway, let me know how that goes


I have Hyper EVO . It's weird though. The person who built this PC tested it on prime for 48 hours @ 4.4 + 1.275 v for cpu & cpu cache.
I updated the BIOS and reset all the settings though.
His maax temp was only 78.
I'm at 1.250 and I did some test for an hour in aida64 last night. Max temp was 93. But constant 75-85.

Anyways. I will try that method. Hopefully it works.

So basically start from fresh . Set those V core + turbo boost offsets.
Keep LLC @ lvl 2/3 . THen keep increasing multiplier?? Wont I need to increase the voltage offsets too? going from 35 -> 44.
Or is that what you meant? Increase voltage offsets + multiplier at same time for each). And how much exactly is 'one notch'?
But Okays.
Still not sure how to do that though. Let me get into Bios first. Thanks

EDIT: Okay just checked BIOS. I dont see an option to change turbo boost offset? Is turbo boost just another name for cpu cache?
I know how to change the other ones though, apart fromt this one.

here's a pic of my bios to give you an idea:



Sorry Im pretty new at overclocking CPus .Thanks
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Best solution

October 26, 2013 6:37:26 PM

So I finally got home -

Yeah, Start fresh
-Reset the Multiplier to default which is 34
-Set the Vcore to +0.05 and Turbo Boost to +0.04
-Keep LLC @ 2/3

Boot it and see if it's stable in Prime by running blend test for about 5-15 min
After you verify that it is stable, only increase Turbo Boost and not the Vcore Offset (Vcore should stay at +0.05) by one notch, until you are stable.

My temps at 4.5ghz are much lower than when I OC the offset. Much more efficient way of doing it. Also try to keep the LLC at 3 instead of too if you can because LLC will yield lower temps but if it's not stable then set it to LLC 2.


About Intel Turbo Technology ,It should be there buddy

It's called "Intel Turbo Boost Technology"

Here is a picture:

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October 27, 2013 8:47:24 AM

moshe22 said:
So I finally got home -

Yeah, Start fresh
-Reset the Multiplier to default which is 34
-Set the Vcore to +0.05 and Turbo Boost to +0.04
-Keep LLC @ 2/3

Boot it and see if it's stable in Prime by running blend test for about 5-15 min
After you verify that it is stable, only increase Turbo Boost and not the Vcore Offset (Vcore should stay at +0.05) by one notch, until you are stable.

My temps at 4.5ghz are much lower than when I OC the offset. Much more efficient way of doing it. Also try to keep the LLC at 3 instead of too if you can because LLC will yield lower temps but if it's not stable then set it to LLC 2.


About Intel Turbo Technology ,It should be there buddy

It's called "Intel Turbo Boost Technology"

Here is a picture:


Yeah I knowq, but how to change its voltage?
That's what I was asking haha. Is that CPU cache voltage then?


Edit : Okayy, I've been running @ 4.5 ghz stable now.
Did everything you said but after 36 (multiplier) I skipped to 42 then 45.
I'm actually testing it right now and at 100% load. it says my vcore is only 1.199v =o
And in most games I average around 65c-73c on core # 0 which is always 5-8 degrees hotter.
Thats not too bad right?

Still not sure which exactly is turbo boost voltage ?
But I set CPU cache voltage to +0.005 . If that's what it is.
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December 15, 2013 9:15:08 AM

Hi there,

Could you please post the whole setting of the bios for the 4.5Ghz settings. I am not able to go above 4.2 and make it stable :( . Maybe I just have one of these chips which are below average.

Thanks!
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December 25, 2013 4:27:08 PM

surr3a1 said:
Hi there,

Could you please post the whole setting of the bios for the 4.5Ghz settings. I am not able to go above 4.2 and make it stable :( . Maybe I just have one of these chips which are below average.

Thanks!


For me ,all I did was change ratio to 45.
And the voltage offsets he told me to change.
And the LLC @ lvl 3.

But it was running too hot still for me.
Im only on 4.0 now.
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