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***Official Ivybridge Overclock Thread***

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Bit too hot to go much further, not too bad though. Seems solid on 4700 @ 1.3v, 20 minutes blend so far.

I'll probably drop back to 4500 @ 1.2v to leave it though.

Edit: 30 minutes on, still 79 max.
 
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So got 4.4GHz fully stable at 1.272v with my RAM bumped up to 1866MHz too. tried for 4.5 last night and by upping the vcore by 0.010v each time I got issues. Now the only issues I had was WHEA errors. Prime blend wasn't crashing or coming up with errors either. I ended up on 1.35v before I gave in for the night. Any ideas or have I reached my limit on this chip? My next step was to try again with PLL overvolt enabled rather than set to auto.
 
I've had WHEA errors hit me after 14 hrs of prime blend. Figured that was good enough and got a bsod later that day. Sometimes overclocking is a pain in the arse!
 
Rossdh said:
So got 4.4GHz fully stable at 1.272v with my RAM bumped up to 1866MHz too. tried for 4.5 last night and by upping the vcore by 0.010v each time I got issues. Now the only issues I had was WHEA errors. Prime blend wasn't crashing or coming up with errors either. I ended up on 1.35v before I gave in for the night. Any ideas or have I reached my limit on this chip? My next step was to try again with PLL overvolt enabled rather than set to auto.
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Personally I'd stick with 4.4ghz. That's quite a voltage jump for a measly 2.3% increase in CPU speed.
 
Dear All

I have been OC'ing my i5 3570k today and have managed to get up to 4.4 and stable at 1.228 on the Vcore. Temps aren't great on the cores though, I have an Asetek 510LC Liquid Cooler which I have been told should do the job no problem. I have taken the voltages down to try and lower temps but it becomes unstable so this is the lowest voltage setting I could get stable. Should I be too worried about the temps? Anything I can do to improve? Not the greatest day to be doing it I guess given the temperatures today.......

 
jaydr said:
Dear All

I have been OC'ing my i5 3570k today and have managed to get up to 4.4 and stable at 1.228 on the Vcore. Temps aren't great on the cores though, I have an Asetek 510LC Liquid Cooler which I have been told should do the job no problem. I have taken the voltages down to try and lower temps but it becomes unstable so this is the lowest voltage setting I could get stable. Should I be too worried about the temps? Anything I can do to improve? Not the greatest day to be doing it I guess given the temperatures today.......

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Well temps are an issue with ivy, you can delid and replace the thermal paste but it carry's risk's and void's warranty.

I just got mine and to be fair they only go high like your's if stress testing with prime 95 and the such.

I tried the route you have taken by lowering the voltages, it would pass 20 runs in linx but would fail to render in cinebench, so obviously not stable, discovered this after I thought I shaved quite a bit of voltage off, in the end I gave up and put multi to 45, set my memory to xmp, and left everything else on auto, this results in a 1.320 vcore but stable and will do everything I ask, my most tasking task is playing BF3 for a couple of hours, temps hit around 63c max which is fine and is what I would be happy with in normal use.
 
Thanks for the reply. What sort of voltage is undesirable? I have probably done too much reading on it but have seen plenty of comments about not wanting to be as high as 1.3v and above. is this likely to cause a problem long term, I see that it's well within intel's guidelines though.

the other thing I notice is that I set the vcore on asus suite but it's then always reading higher on CPU-z, any ideas...?..
 
Stock cooler, hmm that does look a bit toasty to me but it could be normal for all i know but i would have thought 50 would be max on stock cooler on stock clocks.
 
50ish is kind of what i was expecting, it's not even a warm day. Idk.

One thing i have to say is a ****ing hate how the stock cooler is attached. Thought i was going to break the mobo putting the push pins in, one of them just did not want to go :/

I really cba putting a new cooler on for the time being, my case is a horrible mess :o
 
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Is 4.5GHz @ 1.328v (CPU-Z) using manual voltage Ok/recommended for 24/7? I'm currently on 4.3 @ 1.224v.
I can't get it to boot using offset voltage: On offset auto, load voltage is 1.432v and idle is ~ 1.230v. Using an offset of -0.100 freezes on the windows logo at boot, with BIOS reporting ~ 0.980v.
Is there something I'm missing here?

Changing the subject a little, which TIM is recommended for use under the IHS? I've used AS5, but it hasn't made a huge difference to my temps, maybe 2-3*C (although that could be down to seating my replacement H100).
 
I've got 4.5Ghz stable at this voltage, been folding all week.

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Think it's set to manual 1.280v, lowered the igpu volts to offset some heat.

TIM for de-lidding is apparently liquid pro if you can use it skilfully enough and not make a mess.

I wouldn't use auto volts for overclocking.
 
I will be joining the party soon, got the mb, ram and cpu, now just need to figure what hsf to get for £30 ish.

Got a 3570k. Should be up within a week i think. Then let the oc mayhem commence. :D

Hank what cooler u using mate, also did you delid the cpu?
 
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Ah right, misread.

A good cooler with plenty of mounting pressure does fine without delidding. Just stay under 1.3v load. I'm running Prime95 atm on the following:

3570k 4.4ghz @ 1.3v fixed voltage (all power saving off), 1.26v under load
Megahalems + Scythe GT1450
Temps: 64-70c

Granted, it's 10c cooler than during the day right now.
 
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