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***Official Ivybridge Overclock Thread***

Apparently it's the temperature changes that reduces the lifetime, to a much greater extent than higher temperatures. So if at 80'C, there will be a lower lifetime as the CPU has to vary greatly from ambient to 80 several times, which gives a larger delta than to what it would experience with stock clocks, e.g. ambient to 55'C.
 
did some accidental experimentation last night (bios update - you can't save your oc settings)

seems memory speed does effect Vcore required ... these with my Samsung memory

1600 1.35V, CPU @ 4.5 - needs 1.225V

2200 1.45V, CPU @ 4.5 - needs 1.285V

quite a difference
 
Is there anyway to turn the igpu completely off? I've been getting blues screens and I suspect it's down to putting clock+volts of the igpu to their min. Doing this reduces load temps by around 5c. I had a week of non-stop solid folding and temps averaged around 70c, now after a blue screen just now I put igpu clocks+volts back to normal and temps going above 75c on full folding load.

system blue screened on a youtube video with hardware acceleration turned off which is why I suspect the igpu, though last blue screen was when I came out of a game, is igpu on the ivy in use then? Event logger after recent blue screens reveal nothing

I had gpu clock down to 400 and volts I think at 0.75 something
 
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I'm stressing my 3770K @ 4.7GHz at the moment and it needs 1.35-1.37 to run AIDA64. I'm thinking my chip isn't that great considering a lot of you seem to be doing 4.5 etc on under 1.3. I wonder if having all 4 dimm slots filled is causing this?
 
Am I right in thinking that to get over 4.3 on 3570k requires setting a cpu core v rather than having this set to auto?

Setting an actual value for cpu core v stops you having low volts when the multiplier backs down when not under load?

What are these offset volts I see people mentioning, I can't see that in msi mobo?

How long on prime blend would be considered stable?
 
Hi, I am struggling to get P95 stable and seem to be encountering infrequent BSODs whilst idling at the desktop, but everything is fine whilst gaming.
It BSODs under prime (small FFTs) after just a few minutes with all workers running still and max core temp of 75*C. I'm currently 15 minutes into stressing with 1.208 vCore

How do these OC settings look? From what I've read this voltage is quite high for 4.3GHz

Multi - 43
BCLK - 100
vCore (load) - 1.200 (1.204 idle)
LLC - Auto

Any help would be appreciated, thanks
 
If you're blue screening I suspect you just need to keep gradually increasing the vcore until it stops. My 3570 isn't a great clocker at all an needs 1.296 for a stable 4.4 ghz. At 1.284 I could run 30 loops in IBT and prime for over 12 hours, yet it wasn't rock solid and would occasionally blue screen.
 
Freddie1980 said:
I5Oc46.jpg


Happy with that. :)
Click to expand...

Hey Freddie. What cooling are you using? My temps get very toasty at just under 1.3v!
 
Currently testing under prime blend as I've found that harder to achieve than small ffs.
Passed a few hours last night before stopping it as I didn't want to chance it overnight until I'd done a long test whilst I can check up on it.

However, what was stable last night wasn't when starting from cold this morning but seemed my mem needed a bit more of a nudge to volts.

Currently testing;

CPU ratio : auto
BCLK : 100
Vdroop / LLC : auto
CPU core v : auto
Core ratio limits : all set to 43

vCore (load) : 1.168 acording to CPU-Z
Temps averaging 64c
2 hours stable so far and no WHEA errors in the event viewer, system log.

Mem running at 2133MHz 1.5680v
 
I usually leave mine running over night and if it's still going in the morning i'll leave it running until I get back from work. If no errors are reported in prime after that have a quick check through Windows system logs for WHEA warnings. If that's all good then a week or so of general use and gaming before being happy.
 
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Buckster said:
did some accidental experimentation last night (bios update - you can't save your oc settings)

seems memory speed does effect Vcore required ... these with my Samsung memory

1600 1.35V, CPU @ 4.5 - needs 1.225V

2200 1.45V, CPU @ 4.5 - needs 1.285V

quite a difference
Click to expand...

It may simply be the memory voltage that affects required cpu voltage. This was the case with the 1156 platform. On my i5 750, lowering the memory voltage also allows me to lower the cpu voltage at same speeds.

I remember reading that the difference between cpu and memory voltage should be as small as possible. There was some technical explanation, but it went over my head :)
 
Ok so here is my two cents

4.7GHz @ 1.33v
10 hrs prime stable
5 passes IBT max stable



this was just 10 mins but 10 hrs saw my temps hit 67c

funnily enough 4.8GHz i limited by volts and not temps? 4.8GHz takes too many volts, 1.43v but temps after 10hrs prime only saw 75c!!!! so im going to stick to 4.7GHz :)
 
buzzlightweight said:
Ok so here is my two cents

4.7GHz @ 1.33v
10 hrs prime stable
5 passes IBT max stable

this was just 10 mins but 10 hrs saw my temps hit 67c

funnily enough 4.8GHz i limited by volts and not temps? 4.8GHz takes too many volts, 1.43v but temps after 10hrs prime only saw 75c!!!! so im going to stick to 4.7GHz :)
Click to expand...

What did you use between the IHS and cpu mate?
 


Thats where im at right now, my aim was 4.4 so im happy with that. Tried to get to 4.5 but temps just werent worth it.

IBT took it up to 82C on cores 2 and 3, the others were at least 5C lower.

Using an MSI Z77A-GD55 with LLC set to level 2, and an EVGA superclock cooler (MX4 paste if anyone cares lol).

Seems stable at the moment, no errors. Will run this overnight most likely. Hope that screen i posted is a reasonable size :)
 
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