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Haswell Overclock Thread

I managed to get this cpu for £240, will most likely sell it on for a little less than that and buy from Ocuk next time.

I like to overclock so will definitely be giving the lottery another go :-P
 
Saw that about IB-e, Does indeed seem a bit underwhelming. Ive actually thought about the transition to haswell myself. Mainly as im a bit dissapointed with the clocking ability of my current chip. Thinking of i7 4770k and the Rog maximus VI hero board. Identical layout to my current board so it would be fine for sli.
 
Yep, I'm eyeing up with a MVIE or the Gigabyte OC, my initial theory is if I can keep temps under control by going naked mount I may manage to overcome any potential 'bad clocker'.

I asked this in another thread but here is probably more apt...

Those with 'bad clockers' on Haswell, is it a heat limitation that makes them poor clockers or just won't post above a certain multiplier regardless of voltage?
 
pgi947 said:
Yep, I'm eyeing up with a MVIE or the Gigabyte OC, my initial theory is if I can keep temps under control by going naked mount I may manage to overcome any potential 'bad clocker'.

I asked this in another thread but here is probably more apt...

Those with 'bad clockers' on Haswell, is it a heat limitation that makes them poor clockers or just won't post above a certain multiplier regardless of voltage?
Click to expand...

That is something I hope I can help answer either tonight or tomorrow :-) so far my temps are insane under load and I can't get 4.3ghz stable. Will remount and hopefully will reduce temps. Fingers crossed that will allow me some more headroom for oc....... I hope :-\
 
Just finished building my new I7 system (top part of the signature, nice jump coming from the I5 i had.
Obviously its bloody hot at the minute so thought id do some stress testing at stock before I messed around.
So using CPU-Z, real temp and prime 95 I got the following:

Clock speed 3900mhz (as stayed in turbo mode)
Temp range was: 30c - 80c under stress for ten minutes.
@3.9mhz the chip was pulling 1.164v (not sure if thats what its set to by default)

I was obviously a little worried that if its pulling 80c under torture at 3.9 that its not going to overclock well??

Its been cooled by a Alpenföhn Brocken 2 CPU Cooler with a second fan added and there are 3 case fans installed running at 50%.

ram is set to its xmp profile of 2400mhz.

Is it worth pushing it or is it likely to be a bad chip / bad weather LOL?

oh batch number is: L311B514
 
Yeah the stress temps are daft with this cpu, to be honest check gaming max temps to see how they are before worrying too.(when overclocking it doesn't seem to get much hotter on load unless you are going above 1.2v it starts getting silly)

A store near me delids Haswells for £89 including reseating the cpu back into the system too with liquid cooling paste.Going to get it done by them in 2 weeks i think, known the guy in the past he's extremely good with pcs and has delidded some already with great results using a nice workshop he has.

By the way Ndaar that sig is way too big may want to alter before a Don sees. :)
 
pgi947 said:
Those with 'bad clockers' on Haswell, is it a heat limitation that makes them poor clockers or just won't post above a certain multiplier regardless of voltage?
Click to expand...

While I don't have (or haven't had) a bad clocker, from what I've read it's more because it is just impossible to get the chip stable at the higher clocks without feeding it a lot of volts. Say if you need 1.3V to even boot at 4.3GHz then you don't have any headroom as it's not likely going to be stable at load at that speed, and you can't really up the voltage much more while maintaining safe temperatures.

These bad clockers also seem to get hotter at the lower speeds, but I have a feeling that may be due to the volts needed to even allow them to run without crashing. Custom loop cooling together with delidding might make it possible for the bad chips to be pushed a bit further, but they still will be far from breaking any records.
 
Sycho said:
Yeah the stress temps are daft with this cpu, to be honest check gaming max temps to see how they are before worrying too.(when overclocking it doesn't seem to get much hotter on load unless you are going above 1.2v it starts getting silly)

A store near me delids Haswells for £89 including reseating the cpu back into the system too with liquid cooling paste.Going to get it done by them in 2 weeks i think, known the guy in the past he's extremely good with pcs and has delidded some already with great results using a nice workshop he has.

By the way Ndaar that sig is way too big may want to alter before a Don sees. :)
Click to expand...

Will do :P thanks
 
Sycho said:
A store near me delids Haswells for £89 including reseating the cpu back into the system too with liquid cooling paste.Going to get it done by them in 2 weeks :)
Click to expand...

A nice little earner, what happen's if he breaks your chip, will he replace it?

You going to the Delidd Man Shop :D, coming home.:(

Hope it works out ok.:)
 
I've refitted the block on the cpu, temps at 3.9ghz 1.2v under p95 shoot straight to 94c.

Was contemplating delidding but after reading on OCN decided against it, other people with bad clockers tried it and it didn't improve the clocking ability.
 
just set up my haswell system and i am going to try some overclocking hopefully soon, just wanted to see what you guys think these temps are like at stock speeds, have not changed anything yet but turbo boost is enabled, prime was running blend test for about an hour, fyi - batch number is L311B427
I may have to invest in a corsair h100i, dnt know if it will make much difference though, its also really warm and humid at the moment, but my case temp is only 31c anyhow, room temp is - 25c, can anyone tell me there idle temps unlocked please :)


o8a2pc.png


what are you windows 7 or 8 power settings guys, have you set it to performance....
 
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1Deep said:
I've refitted the block on the cpu, temps at 3.9ghz 1.2v under p95 shoot straight to 94c.

Was contemplating delidding but after reading on OCN decided against it, other people with bad clockers tried it and it didn't improve the clocking ability.
Click to expand...

I have a poor clocker that needs lots of volts to run at >4.2

I did delid it and that brought the temps under control so the high vcore wasn't creating any thermal issues.
After a delid you can run AVX benches all day long without worry.
However it didn't improve the overclocking ability one jot.

With hindsight I shouldn't have bothered deliding it as it is such a poor clocker.
I did think it would help with the max clocks but it doesn't.

If I get fortunate and eventually get a good haswell I will delid again, but only if it is going to be a keeper.
 
PCZ said:
I have a poor clocker that needs lots of volts to run at >4.2

I did delid it and that brought the temps under control so the high vcore wasn't creating any thermal issues.
After a delid you can run AVX benches all day long without worry.
However it didn't improve the overclocking ability one jot.

With hindsight I shouldn't have bothered deliding it as it is such a poor clocker.
I did think it would help with the max clocks but it doesn't.

If I get fortunate and eventually get a good haswell I will delid again, but only if it is going to be a keeper.
Click to expand...

I also think my mx3 paste is past its use by date as it doesn't seem to be doing as good a job as it used to. What paste do people recommend these days? Currently im at 3.9ghz 1.2v and under p95 after the refit I'm getting 94c which is just plain wrong.

Placed this cpu on fleabay, see how much I can get for it and will buy another.

Any thoughts on whether intel will release a newer stepping? they didn't do it on sandy or ivy, did with sandy-e though.
 
Liquid pro for the delid, Core-IHS
MX4 for IHS-HS

The thermal issues are the result of the poor TIM between the Core and IHS.
Using better TIM's between IHS and Heatsink won't help much.
 
I'll get some MX4 when I buy another 4770K. Already have some liquid pro, used that on my previous 3570K

These haswells are hotter than ivy by a distance.
 
i tried going to 4.6 with the lowest voltage i could get which was 1.35 and cpu started throttling pfttt im sending it back to amazon n going to try and get a decent chip if it kills me grrrrrrrr currently running it at 4.2 with 1.3 volts and max temp it hit was 84, woul you guys say i have a turd chip :( gutted
i myt return everything and ivy bridge instead while i still have chance lmao, what you guys reckon
got it running stable at 4.4ghz using 1.235 volts cant go any further at all though it just blue screens i myt just keep it now, i mean 4.4 is good enough for me - max temp is 80 , cant believe it want go to 4.6 even at 1.35 volts

4.4 ended up failing no matter how many volts i pump into it an various settings i have tried, bad batch on amazon or what, will be returning
 
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Managed to get 3.9ghz 1.15v stable. Temps hit 76c on hottest core, 67c on the coolest under p95.

Woohoo?
 
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