4770k..did i get a weak overclocker?

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Bighairyman

Bighairyman

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Running stable at 4.2ghz@1.15v. I tried booting up at 4.6ghz@1.25v but it crashes when windows starts booting. Using h110 cooler. Should I exchange it?
 
Solution
B
a) try remounting that cooler with GOOD thermal grease not the crap it comes with
b) consider getting a better cooler - those things were not designed with thermal output of haswell in mind
c) research - you will find that 4.6 and above is only possible for most people at higher voltage (=more heat) and on top end air coolers and custom liquid.

ANY of the air coolers in this thread perform better than H100 -
http://www.tomshardware.com/reviews/best-heat-sink-haswell,3554.html

delidding will not solve your issue - it is treating the symptoms not the cause
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fudoka711

fudoka711

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It might be weak, but only putting in 1.25v to get 4.6ghz seems like its too low for haswell. Most people hit a brick wall between 4.4-4.6ghz with haswell. I feel like you need at least 1.3v, which is already pushing it if you're trying to be safe. As long as temps don't get too high, you can give it more voltage though.
 
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06yfz450ridr

06yfz450ridr

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i agree with the voltage issue, it seems a little low


also these new chips are known not to be great overclockers so its the luck of the draw, i'd be happy somewhere in between there and leave it
 
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Eximo

Eximo

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My chip hits 4.5Ghz @ 1.35v also peaks at 100C under load, so I run it at 4.2-4.3Ghz at 1.238v mostly for stability, I kept getting crashes with lesser voltage, still hits 80+C

I'm considering Delidding just to get a more consistent temperature out of it.
 
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B

Buzz247

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a) try remounting that cooler with GOOD thermal grease not the crap it comes with
b) consider getting a better cooler - those things were not designed with thermal output of haswell in mind
c) research - you will find that 4.6 and above is only possible for most people at higher voltage (=more heat) and on top end air coolers and custom liquid.

ANY of the air coolers in this thread perform better than H100 -
http://www.tomshardware.com/reviews/best-heat-sink-haswell,3554.html

delidding will not solve your issue - it is treating the symptoms not the cause
 
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Solution
Eximo

Eximo

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Not really sure what you mean, my symptom is temperature and the cause is voltage. If I want to run a higher voltage for stability at higher frequencies I need to be able to reduce the temperature. Everything I have seen shows a 10-15C drop after replacing the thermal compound intel uses to apply the heat spreader. This would let me run the chip in the mid 60s rather then constantly at 80C. I would be happy with a 5C reduction.

I have used one of the better air coolers with only slightly better results. A custom loop would be quite an investment versus this cheap fix, if somewhat more risky.
 
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Buzz247

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symptom is temperature - cause is inadequate cooling - delidding - sure will help - not sure where you got 10-15c drop from.... would love to see that data - Best I have ever seen or even experienced is with Coolab Liquid Pro (liquid metal solder compound) and that was 4-6c per core - which is extraordinary.

The cooler is your limiting factor right now. Granted just one of them, but the largest variable by far. at 1.37v, I have seen the same chip hit 4.7Ghz and stable under Prime 95 4hr mark at 78c. Your problem therefore (as this is not an extraordinary case and has been replicated by similar results by many) is not voltage nor clock speed.

But being that this thread was originally started by bighairyman, I encourage you Eximo, to start another thread and see if others might have some insight. Am curious what cooler you used too. Better end is not top end as seen in the test results i posted a link to
 
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Bighairyman

Bighairyman

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Update:

I set it to 4.5Ghz@1.25v and was able to run LinX 20x stable with max temps between 68-74. I used the AIDA 64 test and the system crashed after 4 minutes. I ordered some Antec formula 7 TIM and Noctua 140mm fans to replace the stock h110 fans.

 
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Buzz247

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can't hurt, but as was mentioned before, your problem is voltage too low. i think if you check your settings against this guide, you will find a number of changes to be made that will stabilize.
http://www.tomshardware.com/forum/id-1722630/intel-god-quick-dirty-guide-4ghz-haswell.html

68-74 is not a heat issue on 100% stress load. Now granted, when you up the voltage and finally get stable that will be higher, so like i said, tim and fans won't hurt
 
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