***Official Ivybridge Overclock Thread***

[alphaomega16]

Sorry, missed that one. You should be fine with 4ghz, doubt you'll even have to touch the voltages, there's a real exponential curve or cooling/voltage required to hit the top numbers, below about 4.2ghz should be fine at stock, with barely raised temperatures.

Since you have the same processor and mobo any chance you could tell me what I would need to change in the bios.

 

[ilovetechno]

Well if it BSOD's after 1 hour then that is usually an indicator of it being unstable, which usually requires more volts, so lowering is not really an option on the volts, to me you should start again, don't just apply peoples settings as sometimes they have no clue or it's just bad advice, best to do some research first, temps of 90 is a bit high.

My advise is use the clear cmos button, (read your motherboard instructions on how to clear cmos) or apply default settings in BIOS, do nothing but change your turbo/multiplier to 40, leave all the voltage at stock and then test with prime95, check temps with realtemp 3.70 and run CPU-Z and see what voltage is being used, then report back for more advise

Ok default settings applied and changed to 40x multi when you say stock volts you mean auto right?

Temps are max 72c and requiring 1.184v??? @ 4.0Ghz? 10 min prime95 (latest avx one)

My bios settings:

 

[Ell223]

How long have you had it? maybe return it under DSR if less than 7 days old, also what memory do you have as i see it's set at 1333, if it is indeed 1600mhz ram you have you can set it to XMP if they are compatible under AI Overclock Tuner.

Don't think I can because I didn't buy it over the internet, I got it from a retailer. Oh well, 4.2GHz is still pretty decent. I'm more annoyed at myself for not paying enough attention when buying it! Up until it was pointed out to me I thought I had the 3750K, but looking at the website and price's, I know I brought the regular old 3750. And the 3750K was only £11 more! I was just too excited to get home and fit it!

A hard lesson learnt, but a mistake that I won't be repeating. I'll stick with the 3750 and upgrade again at some point next year I expect

Thanks for pointing out about the RAM though. I had brought 2x4GB sticks that were 1600, but stuck it in the case with two older 2x2GB which were only 1333. So I decided to take out the older ones and run it at 8GB's but at 1600.

 

[SkeeterUK]

Could always just ask if theres a chance you can replace the cpu with a k version they might be cool about it and just clean the tim off and pretend you didnt use it yet

 

[RedToasty]

Since you have the same processor and mobo any chance you could tell me what I would need to change in the bios.

Sure. First thing I tried, purely put of curiosity was turning on the OC Genie setting. This overclocked it automatically, knocked up the voltages etc, did quite a good job considering Voltages were a bit high though so I turned it back off to do the job properly.

Raised the multiplier to about 40-42x.

Raised the CPU voltage to 1.15v or so, you need to click on these and use +/- to change, there's no dropdown like everything else in there curiously.

Turned off EIST/Turbo stuff.

If all goes well try knocking the multiplier up slowly, running Prime, repeat. I left mine on 1.2v, which lets it get 4.5ghz totally stable and never passing 70 degrees. It idles about 20-40, EIST really isn't needed.

PS Oh, I'd run the Updater software and make sure the bios is up to date. Always helps with motherboards for newish chipsets.

Grabbed ClickBios settings from my setup:

It shows as 1.2v in the bios, not sure why Click sees it as 1.19v. Oh and ideally, you'd just switch on XMP for the memory, I found it unstable though so set it custom. I'd just leave it as stock until you're sure the rest is solid.

 

[hyperst]

Ok default settings applied and changed to 40x multi when you say stock volts you mean auto right?

Temps are max 72c and requiring 1.184v??? @ 4.0Ghz? 10 min prime95 (latest avx one)

My bios settings:

Spoiler

yeah that all looks good, maybe run a few hours of prime95 at that and if all ok go back in and adjust the multi to 41, then test again with prime95 (the slow but steady way) if it fails prime at any time you up the voltage a little.

You could apply a bigger multi but just be cautious of the temps you hit, there was no need for me to set any voltage manually, I just left it at auto and it's fine, but if I stress test with prime95 temps will hit mid 80's which is a little toasty, so what I do is just use my PC for gaming and stuff and not worry about running hours of primes and the max temps I see are about 66 at 4.6ghz and 1.320 core voltage (that is what auto sets for me for a 46 multi)

 

[alphaomega16]

Sure. First thing I tried, purely put of curiosity was turning on the OC Genie setting. This overclocked it automatically, knocked up the voltages etc, did quite a good job considering Voltages were a bit high though so I turned it back off to do the job properly.

Raised the multiplier to about 40-42x.

Raised the CPU voltage to 1.15v or so, you need to click on these and use +/- to change, there's no dropdown like everything else in there curiously.

Turned off EIST/Turbo stuff.

If all goes well try knocking the multiplier up slowly, running Prime, repeat. I left mine on 1.2v, which lets it get 4.5ghz totally stable and never passing 70 degrees. It idles about 20-40, EIST really isn't needed.

PS Oh, I'd run the Updater software and make sure the bios is up to date. Always helps with motherboards for newish chipsets.

Grabbed ClickBios settings from my setup:

It shows as 1.2v in the bios, not sure why Click sees it as 1.19v. Oh and ideally, you'd just switch on XMP for the memory, I found it unstable though so set it custom. I'd just leave it as stock until you're sure the rest is solid.

Very much appreciated mate, I will probably leave the memory alone and see how the system does at stock before I see about doing the CPU but at least I now know what to do

I will take your advice on the bios update, I have never done one before so I hope I dont **** it up lol. How do I go about this, can I do it without having any HDD inserted, ie put everything but HDD in and turn it on and enter bios with ethernet connected ?

 

[RedToasty]

Very much appreciated mate, I will probably leave the memory alone and see how the system does at stock before I see about doing the CPU but at least I now know what to do

I will take your advice on the bios update, I have never done one before so I hope I dont **** it up lol. How do I go about this, can I do it without having any HDD inserted, ie put everything but HDD in and turn it on and enter bios with ethernet connected ?

Yeah, the memory tweaking really doesn't make much difference, couple of percent in benchmarks, if that.

The Updater tool gives you a couple of options for updating the BIOS, you can stick it on a USB stick and make it boot from that, safer than in Windows if you're paranoid. The motherboard has a backup bios that you can switch to, so it's not really anything to worry about

 

[alphaomega16]

Yeah, the memory tweaking really doesn't make much difference, couple of percent in benchmarks, if that.

The Updater tool gives you a couple of options for updating the BIOS, you can stick it on a USB stick and make it boot from that, safer than in Windows if you're paranoid. The motherboard has a backup bios that you can switch to, so it's not really anything to worry about

So you need an OS on to actually download them, bummer.

Oh well wont take long to install windows on an SSD and if it goes wrong it wont take long to redo it lol

 

[ilovetechno]

Set multi to 42x and loads temps @ 86c on auto volts!

i think i need to go manual volts cause auto is giving it to many volts 1.280v

What volts should i start from ,for a 4.2 ghz OC?

my goal is max OC that gives me load temps under 80c really.

Also im on bios 0402 maybe should i flash to latest?

 

[hyperst]

Set multi to 42x and loads temps @ 86c on auto volts!

i think i need to go manual volts cause auto is giving it to many volts 1.280v

What volts should i start from ,for a 4.2 ghz OC?

my goal is max OC that gives me load temps under 80c really.

Also im on bios 0402 maybe should i flash to latest?

Well in that case you need to do the slow and steady route, set it 4.2 and 1.200v and test with prime95, minimum of about 12 hours should show if stable for everyday use, if it fails at 4.2 and 1.200v you need to up the voltage a small step until you can get prime to be stable, just keep doing that until you are happy with the temps/overclock

Yes you can flash to latest bios, sometimes there's improvements for stability.

 

[ilovetechno]

Passed 42x with 1.200v on prime , max temps 79c

Testing 42x with 1.195v now!

 

[Warbie]

It's also worth checking windows logs after running prime. My chip would pass 12 hours plus in prime but the system logs would be full of WHEA errors and in general use it wasn't stable.

 

[ilovetechno]

This logs are under C:\windows\logs? if so few folders inside this.
What should i be looking for in logs?

Again im on 42x multi 1.170v and over 2 hours on prime95(p95v277) no errors.

Do I keep bring volts down till errors?

Temps are at above settings : idle=29-33c load=65-73c wich its allready good to me as i was looking for a under 80c under load.

 

[ilovetechno]

Getting this error at the start of FFT test on prime95(p95v277)

Unable to detect some of the hyperthreaded logical cpus

All workers are at 100% and lok fine no other errors

Should i worry?

 

[sadbuttrue]

1.17v is about right for 4.2ghz. Keep lowering tho and then add a good amount of voltage over your lowest stable to avoid random issues. Personally I'd add an extra 20mA.

 

[Allnamestaken]

Hey guys,

Is my package temps to hight?

I have dropped down to 1.65Vcore now which is about 1.7 under volts here.

Im running 4.5Ghz and running prime.

All I have done is change the voltages frequancy of the cpu in the bios and nothing else.
Seems stable so far but have not tried any games as of yet.

Im not sure whether to go by the core temps or the package temps ;| i think i have room to go with the cpu frequency im just seeing how low I can go on voltage for bootups and short prime tests atm.

Any ideas?

Im using manual temps btw fixed and not offset.

 

[buzzlightweight]

Hey guys,

Is my package temps to hight?

I have dropped down to 1.65Vcore now which is about 1.7 under volts here.

Im running 4.5Ghz and running prime.

All I have done is change the voltages frequancy of the cpu in the bios and nothing else.
Seems stable so far but have not tried any games as of yet.

Im not sure whether to go by the core temps or the package temps ;| i think i have room to go with the cpu frequency im just seeing how low I can go on voltage for bootups and short prime tests atm.

Any ideas?

Im using manual temps btw fixed and not offset.

i asume the volts you listed are a typo?!?! yes they are fine what cooling are you using? you are at max for air really

 

[Allnamestaken]

Hah I meant 1.165 Vcore and im only using an antec 620 with pants thermal paste I think i put it on crap.

1.165 Vcore and 4.5 and my temps are not exceeding 80C atm at 100% load with torture tests.

What you think?

 

[sadbuttrue]

What voltage does cpu-z show while stress testing? That's the key voltage. Everything else is variable.