4790K idle and load temps ridiculously high. Using a h80i

Andy Kyselica

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Recently my friend decided to buy a gaming pc. And so I offered to help, since he is kinda noobish. He was rolling on a stock cooler for about a month and now decided to upgrade to something better. Since he was getting about 85 degrees celsius while playing farcry 4. So he decided to buy a h80i as its performance is very good for a single 120mm radiator.
However when he fitted in the h80i he called and said that his temps were too high. I told him to use hwmonitor, and he said at idle he was doing about 50 degrees.
Specs:
Case: corsair spec 03
Mobo: Asus maximus IIV ranger
Cpu: Intel 4790K
Gpu: Asus gtx 970 strix
Psu: corsair rm750
Cooler: Corsair h80i push pull
Windows 7

His case has 2 case fans one 140mm in front as an intake, one on the top as an intake, the h80i is in the back as an exhaust, and his psu is fan side up. We tried running with open and closed case and there was almost no difference.

His idle temps were jumping from 45-55 degrees and while running prime95 it jumped as high as 99. This was really too much and so i decided to reseat the block and reaply thermal paste. After that idle temps stayed the same but load temps droped to about 85 fans and pump at 100 percent. I still think this is way too high for a h80i. He is running stock and we set it to as low as 1.000V and this was still an issue. It was even weirder because when idling at the desktop his temps were spiking from 45-60 degrees. Even when the cpu was at minimum load 1-3 percent. We thought it might be an OS problem so we did a new clean install of windows. But this didn't help still the same results. We concluded that the cpu water block might be blocked, or the mobo is feeding the cpu too much voltage. Or maybe he just lost the silicon lottery.
Anyone with the same issues? Maybe someone with similar h80i problems?
What we tried:
Updating bios - no help with our problem
updating chipset drivers and all drivers - no help
reseating cpu block 2x - about 10 degree drop
setting voltages - no result
optimizing case airflow - no difference.
Reinstalling windows - nothing, still having temp spikes
 
Solution
there have been a number of users complaining of high temps with the 4790K on the intel communities forum -
two good links for solutions:
intel's "troubling shooting i7-4790K overheating issues guide" https://communities.intel.com/docs/DOC-23517

and a 35 pg thread on the subject https://communities.intel.com/thread/54032?start=420&tstart=0

my i7-4790 (locked, not a K) ran 99-100C under 100% load. Most of my issues went away with 1) un-installing the Asus Performance monitoring utility in the AI Suite 3, - apparently there's a bug between the performance utility and settings in BIOS - that brought about a 6-8C drop in full load temps. Plus, my Asus performance utility would show 67C while all the other monitoring utilities would...

Andy Kyselica

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Yea, we checked in corsair link and the pump was also working on 100% and when you touched the tubing you could feel some flow throught it.
No we applied just about the size of a rice grain. My friend was saying to apply more but i told him it will just insulate the cpu instead of cooling. Yea the fans are getting great airflow. When running on 100% you can feel the airflow from the back of the case being very strong. Yea thats why it is so weird, i checked review and everyone was having around 28-30 degrees idle and around 70 temps while 100% loads. This is just way too much....
 


I think you got a defective unit.
 

Andy Kyselica

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Well that is one of the solutions we came to while trying to fix it. I told him to maybe try some other coolers and i also offered to borrow him my cooler (CM seidon 120) to try if there will be any difference. During the week i might come over and install by cooler and see it it helps.
 

Andy Kyselica

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Is that a common thing with these h80i? Because as far as i heard they are very well built and reliable
 

Jericho_101

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I'm running my i5 4690K @ 4.5GHZ with 1.850v input and 1.225v core....(+030 from the motherboard, MSI Z97 Gaming 7). My cache is 4.2GHZ 1.165v. My idle is usually 23c-25c and under XTU or PRIME95 version 27.5 it's at 88c-92c. @ 4.8GHZ it throttles at 100c, and that's with 1.365v core. is mine not running good? i just have MX4 on the core and block. I have delidded this too. I need to clean it every 2 weeks (thanks puddy tat). For your answer though, you need to turn your fans around. That'll drop you maybe 5c-8c. Good luck and respond back!
 
I've heard of some people having trouble when using auto fan controls via the bios causing the pump to run oddly. I'm not sure how the h80 is powered so it may not have any affect, but if it's getting signal from the cpu_fan header and set to something like 'cool and quiet' in the bios, is it possible that it's signalling the pump to run high and low similar to keeping a cpu fan low speed? If that's the case, the pump speed may be varying and might account for the odd spikes in temps.
 
there have been a number of users complaining of high temps with the 4790K on the intel communities forum -
two good links for solutions:
intel's "troubling shooting i7-4790K overheating issues guide" https://communities.intel.com/docs/DOC-23517

and a 35 pg thread on the subject https://communities.intel.com/thread/54032?start=420&tstart=0

my i7-4790 (locked, not a K) ran 99-100C under 100% load. Most of my issues went away with 1) un-installing the Asus Performance monitoring utility in the AI Suite 3, - apparently there's a bug between the performance utility and settings in BIOS - that brought about a 6-8C drop in full load temps. Plus, my Asus performance utility would show 67C while all the other monitoring utilities would show 99-100C.

then 2nd) clearing the CMOS and the RTC brought me down to mid 70C. The above were with the stock intel cooler, which is kind of weak.

3rd item - i'd download the intel XTU (Extreme Tuning Utility) - great tool

Since i've gone to a better cooler and my temps are now where i want them 72-75C at full load.

that 35 pg thread is a nice instruction session but took me 3 nights to digest - the info gets more focus'd about pg 15-18

hope that helps
 
Solution
Firstly whats his ambient temperature there? And on a silly note, 'h80/ridiculously high temps' reads to me as 'paddling at beach/feet wet' hehe, single 120 allinones really are on a par with highend aircooling, so if room temps ok and airflow is good, and his paste is ok then its just a case of bought cheap and its not up to the job, he could always mod another 120 into the loop and gain some performance if it is just the rad letting him down :) *edit* and the top 140 should be exhaust not intake btw
Moto
 

melonhead

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Sep 21, 2010
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it is not uncommon for the 4790k to show higher than "normal" temps with the Asus boards. a very large portion of the posts about the 4790k being a high temp, you will see that hte board that they have, is an Asus board. seems to be how the board applies power to the chip causing the heat
 
Wasn't aware of that particular info Melon so thank you for that, been a little preoccupied and not kept up to date with much Pc-wise, do you know if Asus are aware of this and if so are they doing anything about it?
bios update would seem to be a good move for Asus to make if they do know about it imho
Moto
 

melonhead

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i really have not looked into it much, nor didnt even notice until another topic brought up a couple weeks ago. everyone i know that has the chip, including me, does not have any heat issues. however, everyone i know has it on an MSI board. i started paying attention to the boards that were mentioned in the hundred of temp concerns for the 4790k, and noticed that the all seem to be Asus boards. someone else looked into it, and found something on the intel forums. The last post here >>>http://www.tomshardware.com/answers/id-2482821/4790k-temp-reading-question.html goes over that.
my thoughts is that it seems to be that the power going to the chip is elevated compared to other boards. the voltage going to the chip seems to be voltages that would be used to OC. i personally havent checked out the Asus boards myself, so i dont know for sure.