Haswell Overclock Thread

[Wucked]

Built it tonight, only had time for a quick play but will update later.

4770K + H100i on Gigabyte Z87X-OC & Corsair Dominator PLATINUM, so far just with multiplier 4.4Ghz @ 1.140V prime stable at 65°C. Plan on delidding at some point, but I want to see how far I can push it before I do anything.

Post your results here if you like, I'm interested in what others are getting.

 

[Wucked]

Understandable, but coming from an i7 920 that wouldn't do much past 3.8Ghz it doesn't seem that bad to me. Perhaps I just have low expectations.

 

[Wucked]

Update:

4.5Ghz 1.2V 70°C
4.6Ghz 1.272 78°C
4.7Ghz 1.332 90°C

All prime stable. Not willing to try any higher until a delid. I'm going to knock it back down to 4.4 for 24/7 as the volts and temps are nice and low. Not entirely sure about temps either tbh, bios idle temps read 20-30° higher than Core Temp and Real Temp readings. Both Core Temp and Real Temp are perhaps unsurprisingly reading the same in windows.

 

[Wucked]

wow massive jump in temps from 4.5ghz to 4.7ghz and i think you have a good chip there as most seem to do 4.3ghz before thermal barrier kicks in. you will need a very good air cooler with good circulation to keep haswell cool enough, or even better a good custom water loop to push them.

Yeah nasty isn't it. I seem to have finally gotten lucky'ish with the lottery this time though, which is nice. I'm going to delid and test all the frequencies again for comparison sake, then later go custom loop, do them again and hopefully (the gods of oc willing - will sacrifice a donkey or something) see if I can hit 5Ghz.

 

[Wucked]

If I have time this week, if not then next week. Going to take it to an engineering workshop at work and use the vice method. Not sure which is safer, but I don't trust myself not to murder it with a blade. Need time to find a suitable donkey h'as well.

 

[Wucked]

I shudder to think if you tested [email protected] using IBT !!

Saving that for fireworks night

 

[Wucked]

Hey Wucked, I dont suppose you have had chance to play a few games, see what the max temps are like? Cheers.

Yes, a few

At 4.4Ghz:

Battlefield 3 MP full 64 player map: 56% Load, 48°C
Supreme Commander 2 SP 4v4 Large Map: 20% Load, 40°C
PlanetSide 2 Busy Area: 30% Load, 43°C

Those three games are ludicrously smooth to play.

I'll update with more games as I get around to playing them, and perhaps later at different overclocks if I have the energy.

Do you has well?

 

[Wucked]

Very nice wucked, enjoy your new build, yes it will be like jumping from a escort to a cosworth.

TY I still have a lot of geeky love for my 920 though, its been a stonking CPU and easily the best value I've owned. It was a close call between haswell and waiting out another gen tbh (if mine did the same clocks as yours I'd have kept it), but the itch finally got the better of me... And I'm now busy trying to find a good home for it, its still got plenty to give.

 

[Wucked]

Coming from an i7 920 my experience of Haswell has been positive.

Without delidding mine is prime stable at:

4.4Ghz 1.140V 65°C
4.5Ghz 1.2V 70°C
4.6Ghz 1.272 78°C
4.7Ghz 1.332 90°C

For perspective my i7 920 used to require 1.275v to hit 3.8Ghz and under full load would quickly be pushing north of 80°C. It wasn't 100% stable either, at any voltage.

I run my 4770k at 4.4Ghz for 24/7 usage and its cool, quiet, relatively power efficient and a great performer. Noticeably more powerful than my previous CPU. Yet I'm regularly told that its evil because of rose tinted sandy bridge, and therefore I've made a bad purchase.

If cpu frequency is your primary focus then stay with sandy, otherwise for balls-out multi threaded performance you've got sandy-E / ivy-E at double the cost. Either way the reality is that Intel's focus is shifting, and unless AMD do something spectacular with their next release we're going to be stuck here for a while.

After that little rant though I will say that I'm not entirely satisfied yet, and that I plan to delid soon. I just haven't gotten around to it yet.

 

[Wucked]

Are you having stability problems?

Off the top of my head XMP, static vcore, C3 state and EIST enabled instead of offset. There are a few other tweaks I made that I can't remember atm. I'll take a look when I get home and post later.

 

[Wucked]

Has anyone got their 4770k hooked upto a H100i? If so what are your core temps and water temps at various loads / stress tests?

4.5Ghz
VCore 1.25
VRIN 1.9
(can't remember VCache)

Idle ~31
Aida ~80
P95 ~75-80
OCCT ~ 75
OCCT + AVX Linpack 90+
Transcoding video ~68

In all of this my H100i water temp never exceeds 34.5degs which seems a bit low to me, it has a max swing of only about 6 degrees depending on the load.

Also I'm concerned the OCCT Linpack is bombing out at only 40 seconds into the test because temps get so high. I was initially running an offset voltage of 1.1 so ~2.2vcore under load but with OCCT + AVX Linpack running it pulls 1.32vcore and shoots straight to 95 degrees after 40 seconds bombing out the test.

It otherwise appears to be a stable clock but I'm concerned about temps, and I'm going to look to change back to offset voltage again.

Yes, the core temps and volts I posted on the 1st page of this thread are all on a H100i. OP and 4 or 5 posts down.