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i7 3770k and h100i efficiency

post #1 of 27
Thread Starter 
So I've just got an h100i cooler on my i7-3770k (my case is portable so I didn't want a large Noctua nh-d14 hanging off of the mobo and I didn't want a custom loop with leak points and maintenance) and I'm trying to get a 4.5 GHz clock at 1.2v but the temps reach 95C. The box on the h100i says the i7-3770k was tested at 4.6 GHz and ran at 50C. When I close prime95 the temps drop back quickly within 3 seconds to idle temps which leads me to believe there is a problem with the default paste on the h100i (I've heard it's the good stuff, shin etsu TIM) or a problem under the HSF. The radiator is seems to be blowing cool air. Do you think this problem could be solved by delidding?
Edited by louispvb - 5/28/13 at 11:50pm
Osmium
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post #2 of 27
There is no way you should hit 97c with 4.5 and 1.2v. I would guess there might be something wrong with the cold plate of the H100i making good contact with the IHS.

You can take the pump off the chip and take a pic of the TIM fingerprint on the pump and IHS. That might help your figure out what is wrong. You will need more TIM to put it back on though, since you can’t reuse it. What mobo are you using?

Here is how to get your rig in your posts, it helps people to answer any question you may have:
http://www.overclock.net/t/1258253/how-to-put-your-rig-in-your-sig
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post #3 of 27
First off, no way in hell will 3770K's run 4.6GHz at 50C with an H100i. With a good chip requiring low voltage and a custom loop you might be able too...

Ivy runs hot but shouldn't be hitting 97 degrees Celsius at only 1.2 V. For comparison's sake, my 3770K hits mid- to high-80s when stress testing with Prime95. I'm running mine at 4.5GHz 1.25 V. My ambient is warmish as it is hot here where I live. I'm using the Heligon HE01 which has slightly less cooling performance than an H100i. Reapply paste and reseat CPU block.
post #4 of 27
Thread Starter 
Quote:
Originally Posted by justanoldman View Post

There is no way you should hit 97c with 4.5 and 1.2v. I would guess there might be something wrong with the cold plate of the H100i making good contact with the IHS.

You can take the pump off the chip and take a pic of the TIM fingerprint on the pump and IHS. That might help your figure out what is wrong. You will need more TIM to put it back on though, since you can’t reuse it. What mobo are you using?

Here is how to get your rig in your posts, it helps people to answer any question you may have:
http://www.overclock.net/t/1258253/how-to-put-your-rig-in-your-sig

It's actually 95C at 1.2V - 4.5GHz. I can get it down to 87C at 1.15V - 4.5 GHz, but I would like to clock higher, and again, the box advertises 50C.


I'm using a z77e-itx. I'll have my rig in my sig in a few minutes...

EDIT: Sig added.
Edited by louispvb - 5/29/13 at 12:02am
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post #5 of 27
That advertisement is probably about gaming temps not Prime95 temps, which can be 20c hotter. Also every Ivy chip is different in voltage needed and heat. I have seen the heat variation be 10c between two 3770k chips because Intel put way too much glue on one which causes the IHS to misaligned.

Your temps are so high that our only assumption is you have the cooler mounted incorrectly. It could be a problem with the backplate since it does have a certain orientation it needs, or there could be something on your mobo causing the cold plate not to make good contact with the IHS. Taking it off and looking at the TIM fingerprint on both surfaces would help you figure it out.

I don’t know how accurate your tuning utility is for temps, I would use Real Temp or Open Hardware Monitor to measure all your core temps.

Here is the thread for ocing your chip on ASRock:
http://www.overclock.net/t/1198504/complete-overclocking-guide-sandy-bridge-ivy-bridge-asrock-edition
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post #6 of 27
Thread Starter 
Well the box does say 100% load. Cinebench has the same temperatures as well. The backplate might be a problem, when I installed with the standoff screws, it was a bit loose and wiggling, I assumed the second screws that I clamped down would tighten them. The utility I used came with the motherboard and is within 1-2 C of the max temp that RealTemp indicates. I will look at the fingerprint soon.
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post #7 of 27
Yeah reseat and when you do, tighten all the screws evenly in a criss-cross pattern.

I had my 3770k up to 4.6ghz, then had to delid to get to 4.9. As already mentioned Ivy heat can vary considerably from chip to chip, and its not as evenly aligned with voltage as Sandy.
 
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post #8 of 27
Make sure your fans are set at the proper RPMs. I'm at 4.5 @ 1.2 and my max is 60C on h100i. something is funky with your chip or the way you seated the block.
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post #9 of 27
Thread Starter 
Okay, I took the CPU block off and it looked like the paste was covering everything. I took the backplate off, realigned it to the cutout for the screws on the back of the CPU socket, added some washers, and reinstalled it. The backplate and standoff screws no longer wiggled or gave any play. I put new thermal paste (this one because that's the only one they had at the store) and reseated by tightening evenly in a criss cross pattern.

Here are some pictures:






I get 74 C on 1.2V. Are these temperatures normal? The h100i fans run at 2300 RPM when on prime95.
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post #10 of 27
What is your room temp? Would you say you have really good case cooling with lots of fans, or not?
Ivy 5.0
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