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Amateur Haswell Inquerie

post #1 of 21
Thread Starter 
Hi. I built my first computer around the LGA 1150 socket.

I'm new to overclocking. I was wondering how safety works in terms of chip life span. Is it based around temperature or even high frequency/voltage themselves?

I figured the OCing would work like Ivy, so the only multiplier I could boot with was 44 with 1.2 v core. But once I began running Aida 64 stress tests it failed. I don't really need an OC that high but I'd like to know what kind of chip I have.


i7 4770k
16GB 10-11-10-30 @ 1866mhz
GTX 780 if it matters

Now I understand that you have to tweak more things with Haswell but I'm a little intimidated. I appreciate all knowledge you guys can share with me because I wish to not decrease the life span of my chip (besides, I don't even know exactly what some things are such as ring voltage). If overclocking isn't even necessary yet then I won't do it. For now, this is mostly just a gaming and internet browsing computer with a little video editing from time to time. Because I do play some CPU intensive games (Planetside 2 for example) I'd like great performance but not the degradation of my processor as I need it for years to come.


post #2 of 21
The lifespan of the processor can be predetermined by it's fabrication and more or so the voltage that is applied to it. More voltage will generally shorten lifespan but even then, depending on how long you plan to keep the processor is quite a long lifespan even with increased voltage. This is all considering you don't do anything crazy.

There are several guides on how to overclock haswell however the biggest difference between that and Ivy is the unlocking of the blck which is no longer stuck at 100~with minor variances or gains after that.

Keep in mind overclocking isn't everyone's tea, and when I use the term "overclocking" I mean dedication to it; maximizing clock per watt, full stress tests, and etc. MSI has some built in overclocking features you might want to considering if you don't feel like you want to invest a large portion of time into it while still getting more clock for your dollar. You can also use the motherboard's onboard overclocking features and start doing a little bit of tweaking to get what satisfies you.
post #3 of 21
To keep degradation at bay keep the vcore under 1.35 volts and temps under 80 when NOT stress testing. Your chip will last longer than you need it to this way. thumb.gif

O and welcome to the forums biggrin.gif. Great build you have there. Create a sig rig so you do not have to tell people what you have.
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post #4 of 21
Thread Starter 
Hey guys~!

Thanks for the welcome OcN and thanks to you both for responding!

Currently I am running 4400MHz @ 1.22v. I ran Aida64 for an hour with straight lines (pic related).

I had most things at auto (but manually entered voltage- it's not in adaptive mode) and my RAM is at proper 1866MHz frequency.

I'm new to stress testing. Are these things below normal?

I am using a H100i water cooler. I noticed that through the test, my CPU core temperatures continually jumped from 60 celsius up to a max peak (according to the other panel, I didn't see it though) of 86 celsius. It would often go like this each time it 'refreshed':


It hit 80 a couple times and I saw it hit 84c before dropping again.

I know Haswell is hot, just hoping these temps are okay.

& in that case, the next step is to continually lower my voltage until I am no longer stable right? I might be able to press farther on frequency but I don't really see the point. Lastly, would this configuration be considered 'safe', as in it will not degrade my cpu/lower its lifespan? I know I probably seem pretty dull heh. I can screenshot my bios if needed.

Thank you very much. <3
Edited by RaianC - 6/24/13 at 11:48pm
post #5 of 21
Thread Starter 
Sorry for double posting.

I'll allow Aida to run overnight so I know if 1.2 is stable. 5 hours long enough?
post #6 of 21
5 hours is definitely long enough. You'll realistically never put so much stress on a CPU anyway. Also, use core temp or real temp to measure CPU temperature.

Sent from my Nexus 4 using Tapatalk 4 Beta
post #7 of 21
Thread Starter 
Thanks. I'm using real temp as well now and it's reporting same as Aida.


Let Aida run for a hour at 4400MHz and 1.2v. Was stable so I decided to try to lower it some more before I let the long test run. That seems to be the lowest voltage attainable as I immediately blue screened at 1.15v.

If this proves to be stable then is this a safe OC?
Edited by RaianC - 6/25/13 at 12:53am
post #8 of 21
4.4 @ 1.2V is fine for long term use. That's actually pretty good for Haswell. A lot of chips take 1.3+ for 4.4.
post #9 of 21
Thread Starter 
Originally Posted by Forceman View Post

4.4 @ 1.2V is fine for long term use. That's actually pretty good for Haswell. A lot of chips take 1.3+ for 4.4.

I really appreciate the reply. I find this forum is the friendliest around (:

Later tonight I'll try to tweak it a bit and see if I can run 4.4 @ 1.8 or 1.9v.

Just one more noob question tongue.gif

When I am not under a heavy load, should my frequency and voltage drop to save power? CPU Z (fixed one for Haswell) reports that my frequency remains constant (4.4GHz) as well as my voltage. Should it be like this always? If it's not a problem then I'm not worried about it. Just overly cautious I guess rolleyes.gif

Same thing is reported with optimized default settings too so I guess it's normal? I do have ENDI and adaptive mode enabled.

For now I'm going to run Crysis 3 and compare stock temperatures to my overclocked profile's temperatures by monitoring with RealTemp. I probably didn't stress long enough so it'll be interesting to see if I'm stable in Crysis.

Hearing that 4.4GHz @ 1.2 is good sort of surprises me. I couldn't even boot at 4.6 or 4.5.
post #10 of 21
Thread Starter 
I ran Crysis 3 at both stock settings and also 4.4GHz @ 1.2v.

I didn't play for a long time, only about 10 minutes each in fire fights on Ultra High settings.

Now, being the idiot I am, I forgot to record frames. I also realized after the stock test that I should check my system fans connected to my motherboard to ensure they are running properly. While I was in there I set temperature thresholds. 55c became max. Immediately after booting both RealTemp and Core Temp are reporting my idle readings at low 30s instead of previous high 30s. So this might throw off the Crysis results, but these are the max temperatures according to Core Temp 1.0 RC5:

Stock, Ultra High, 1920x1200:

Core 1- 60c
Core 2- 57c
Core 3- 54c
Core 4- 54c

4.4GHz @ 1.2v, Ultra High, 1920x1200:

Core 1- 65c
Core 2- 62c
Core 3- 59c
Core 4- 57c

For others with Haswell, does this sound reasonable with a (supposed) higher end cooler (H100i)?

Because I edited fan speed before the overclocked test the max stock temps may be a little lower.

I'm also pleased that my slightly overclocked 780 (954 MHz) is consistently staying below 70c on stock heatsink.

I also have seven more mounting places in my C70 Vengeance. My H100i fans are only exhausting air out of the radiator. Can't wait to get my hands on some more 120mm fans.
Edited by RaianC - 6/25/13 at 2:01pm
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