H100i High temps

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The Poop Nuke

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Jun 17, 2014
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I recently purchased a h100i water cooler for my i7 4790k. My temps with my stock were really unsafe(50 degrees on idle). I decided to get a h100i because I just wanted to have a quiet, cool system. I never wanted to overclock, just because I do not need the extra power right now. Well, when I first installed the cooler, I threw away the box :( I did not expect to have problems, but I did. I installed HWMonitor to check my temps, and I was surprised. On idle, my CPU was around 35 degrees. I thought they were good temps. After some research, I realized people were getting better temps than me. I then got kinda worried, so I installed Prime95. As soon I did the highest test(FFTs), my temps bolted up to 100 degrees. I went into the BIOS, disabled X.M.P and disabled hyper threading. My temps went down around 10 degrees while running Prime95. One thing that worries me is that on Corsair Link, my h100i temps never go over 40 degrees while my CPU is at 1000 degrees. I feel as if my idle temps are fine, but as soon as I start stress testing, it feels very unsafe. I have installed new thermal paste 3 times and there is no temperature change. I need help, badly. Thanks in advanced

My Specs
i7 4790k
h100i
Z97-A motherboard
550W Thermaltake SMART
r7 260x(this is embarrassing)
8gb Corsair Vengeance
1tb WD HDD
NZXT Phantom 410

I will give you any information necessary to fix this issue
 
Solution
CompuTronix
Guys,

There are some critical details that are being overlooked.

What is your ambient temperature? It hasn't yet been mentioned.

Which version of Prime95 did you run? It also hasn't been mentioned. You may both be running different versions.

Do NOT run any versions of Prime95 later than 26.6. Here's why:

Core i 2nd, 3rd and 4th Generation CPU's have AVX (Advanced Vector Extension) instruction sets. Recent versions of Prime95, such as 28.5, run AVX code on the Floating Point Unit (FPU) math coprocessor, which produces unrealistically high temperatures. The FPU test in the software utility AIDA64 shows the same results.

Prime95 v26.6 produces temperatures on 3rd and 4th Generation processors more consistent with...
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zloginet

zloginet

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I have a i5 4670k with a H100i but I am overlocked to 4.3 with 1.2v going to her.

I idle between 30/33 and I don't think I ever went over 70ish when pushing full bore. Been awhile since I paid attention because I only really paid attention while testing for stability.

i5 and i7 4xxxk are all about the same when it comes to heat.

I would def look into this. Sounds like your having issues putting the cooler/block on. I would also verify your wiring. Directions are all over the web for your cooler kit.

Goodluck.
 
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The Poop Nuke

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What application method did you use for your thermal paste? And my back plate was loose before I installed the block, did that happen to you?
 
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zloginet

zloginet

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I used the applied thermal paste that came on the block. I figured the factory applied paste Corsair used would be plenty for my lower overclock. I ran this chip on a decent air cooler previously at the speed I am at now and had no issues. So I knew Id be even better with the H100i and the paste wasn't a worry. As for the block, yes, it was loose. I ended up using some rubber washers from my old custom watercooled rig. I still think something else is wrong.

My corsair link shows my chip at 33.9 right now and seems to follow HWMonitor just fine.
 
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zloginet

zloginet

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I don't think the H100i is your problem. I think maybe the board or the CPU is bad. A stock cooler on your i7 should NOT idle at 50c. If you have all power savers set to default on a stock clocked i7, the factory cooler is plenty. This issue is bad on both your H100i and stock cooler.
 
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zloginet

zloginet

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Also, I didn't mean the block was loose, I didn't put that on when I noticed the "back plate" was loose. I first made the back plate tight via the rubber washers, then, I put the block on.
 
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zloginet

zloginet

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the i7 4790k didn't come out 3 years ago, you have a 3 year warranty. Here is what I would try. I would spend sometime on your factory cooler first. That is easier to work with and it takes all links/wiring etc out of the mix.
 
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The Poop Nuke

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I don't have the original box. I also don't have the stock cooler. I am unable to return it. I'm stuck here, can't do much :(
 
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The Poop Nuke

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I really do need help. I have invested all of my money over the past year and a half into this computer, and it does not seem that I can return any of the products. I wish it was possible just to buy the box to my parts LOL. I have managed to get my Prime95 temps down to 80 degrees MAX. Anything, and I mean ANYTHING. will help. This is not fun for me at all, I cant stand this. Please help...
 
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zloginet

zloginet

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Bios pretty much at default. Idle 31/33, 50 at full load. (30minutes of Prime95).

Idle is almost never accurate and will never l be lower then your room temp regardless of what the programs might say. Are you sure you are not reading 100% in the corsair link? Just making sure because it is right above the cpu temp in Corsair Link.
 
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zloginet

zloginet

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Also, you don't need packaging in order to submit an RMA to either ASUS or Intel. Can you default your bios and re-run a 5min run of Prime95? I am not worried about your idle temps.
 
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The Poop Nuke

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I reset my BIOS to default, and by doing so it automatically enabled Turbo boosting, As soon as I ran Prime95, it went up to 95 degrees...
 
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CompuTronix

CompuTronix

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Guys,

There are some critical details that are being overlooked.

What is your ambient temperature? It hasn't yet been mentioned.

Which version of Prime95 did you run? It also hasn't been mentioned. You may both be running different versions.

Do NOT run any versions of Prime95 later than 26.6. Here's why:

Core i 2nd, 3rd and 4th Generation CPU's have AVX (Advanced Vector Extension) instruction sets. Recent versions of Prime95, such as 28.5, run AVX code on the Floating Point Unit (FPU) math coprocessor, which produces unrealistically high temperatures. The FPU test in the software utility AIDA64 shows the same results.

Prime95 v26.6 produces temperatures on 3rd and 4th Generation processors more consistent with 2nd Generation, which also have AVX instructions, but do not suffer from thermal extremes due to having a soldered Integrated Heat Spreader and a 35% larger Die.

Please download Prime95 version 26.6 - http://windows-downloads-center.blogspot.com/2011/04/prime95-266.html

Run only Small FFT’s for 10 minutes.

Use only Real Temp to measure your Core temperatures, as it was designed specifically for Intel processors: Real Temp - http://www.techpowerup.com/downloads/2089/real-temp-3-70/

Your Core temperatures will test 10 to 20C lower with v26.6 than with v28.5.

Please read this Tom’s Sticky: Intel Temperature Guide - http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

Thanks,

CT :sol:
 
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Solution
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The Poop Nuke

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Jun 17, 2014
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Thanks. I ended up applying rubber washers to my back plate. That seemed to resolve most of the issues. After installing the correct version of Prime 95, my temps never went above 55. Thank you so much
 
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