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***Official Ivybridge Overclock Thread***

eyetrip said:
Yeah, 4.8 seems pretty doable on 1.2V for me.

IBT very high temps averaged out around 86. One core peaked at 91.

Max temp hottest core reached was 87 in prime.

Think I will settle there, do more stability testing, and one day a year or so from now, remove the IHS, and see where I can get around 1.45V :D
Click to expand...

Screenshots please ;)

Seems you have the worlds best IB cpu and not a single screenshot of some stability testing!
 
-Mike- said:
Screenshots please ;)

Seems you have the worlds best IB cpu and not a single screenshot of some stability testing!
Click to expand...

Well, perhaps that's because like I feel I have nothing to prove... not the sort of person to make rubbish up.

But if it will make you happy, fine.

Screenshot is in it's 11th or so of prime, which as I detailed above, ranges anywhere form 1.2V to 1.232V, but mostly hangs around 1.216V

Edit: I will try to get photo bucket not to resize so much....
Edit2: There I have got a larger image for clarity

Edit: changed to link as screen in next post better
http://i785.photobucket.com/albums/yy134/chris_rabe/48at1216V.png
 
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Well, passed the 12 hour mark for prime, so leaving it there. Bored of testing and want to re-install windows (yuck).

If other people think 12 hours is insufficient, that's their problem. Already stability tested this setup more than I do most, and never had problems with day to day running before.

Just in case of doubt, here is screen after 12 hour mark

Edit: Just want to add that my memory is not OCed at this point, so I fully expect I may need to up the voltage a bit to when I do.

48at1208V.png
 
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Installed coretemp, and according to that, my VID at 4.8 is 1.1559V


Edit: yes, I know this isn't a finished run. I wanted to demonstrate what it looks like under load - for a completed ibt run, click the link 3 posts up.
48at120V-Coretemp.png
 
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I don't disbelieve you have a good speed, was hoping to see what settings you had changed. What is your memory running at?
 
All my testing above was with the samsung greens at stock.

With the memory upped to 2000 at 10-10-10-28-1t I get 110 gflops or so.

But I have still not figured out how to get the memory fully stable at those clocks.

About to go back into BIOS and fiddle with just about every timing, using a guide on the asus rog forums to find my way through.

-Mike-, sorry if I came across as aggressive or anything. Woke up badly this morning :D

With regards to settings, I will need to take notes, but nothing is set to extremes.

internal pll overvoltage disabled
epu power disabled
Phase control is optimised
llc is ultra high
using offset voltage of around 0.06
pll auto, so around 1.8
spread spectrum disabled
 
No mate not at all, you just read my post as being in disbelief! I just hoped you'd have some sort of settings in a screenshot from like asus turbov evo or something that I could have a bash at!

If your gflops are low, have you looked in windows error logs for that whea stuff they say about? Perhaps a touch more vcore would make all the difference?
 
eyetrip said:
All my testing above was with the samsung greens at stock.

With the memory upped to 2000 at 10-10-10-28-1t I get 110 gflops or so.

But I have still not figured out how to get the memory fully stable at those clocks.

About to go back into BIOS and fiddle with just about every timing, using a guide on the asus rog forums to find my way through.

-Mike-, sorry if I came across as aggressive or anything. Woke up badly this morning :D

With regards to settings, I will need to take notes, but nothing is set to extremes.

internal pll overvoltage disabled
epu power disabled
Phase control is optimised
llc is ultra high
using offset voltage of around 0.06
pll auto, so around 1.8
spread spectrum disabled
Click to expand...

Try upping vccsa and vtt a tad.
Also at speeds >1866Mhz run the memory at 2T
Don't be afraid to give the RAM some more volts.

As you increase the memory speed you wil find you also need to increase vcore to maintain stability.
 
vcore is related to memory speed ? mine doesn't seem to be linked ? ie for a given speed if I drop to 1600 I still need just as much vcore :(

running my Samsung green at 2200 10-11-11-26 1T - 1.53V

latest Gene V bios made 1T FAR more stable for me -before I had to mess around with VCCIO etc now I can just leave them at stock
 
eyetrip said:
that was under load in IBT. Would vary from 1.192V to 1.208V, usually 1.2V

Under load in prime it will be anywhere from 1.2V to 1.232V, usually around 1.216V.

Either way, even if I still only need to nudge it up a bit, it's still a pretty decent chip i'd say :)
Click to expand...

Congrats, looks like you got an awesome chip there!
 
How does games like Battlefield 3 etc handle hyperthreading now? and is there much temperature difference between the 3570k and the 3770k chips? as it sounds like the 3770k silicone is slightly better? thank you for the help :)
 
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