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Windows 7: My new i7 4790 is overheating at stock speed

29 Aug 2014   #1
Vistangel

Windows 7 Home Premium x64
 
 
My new i7 4790 is overheating at stock speed

Hi I have my new PC - they built it for me in the shop - but I think the stock CPU cooler is mounted fine as the idle temperature is around 29-33C. But when I render videos it becomes extremely hot, around 86C. I found out that the voltage level is very high. It's around 1.155 at 3.8ghz and sometimes goes to 1.228. If I set it to 3.4ghz max, then the voltage is only 1.05 and the tempeature is just around 74C.
What should I do to stop the overheating? How can I undervolt it at max load? It's ridiculous that the i7 needs 1.05v at 3.4ghz but 1.115-1.228v for 3.8ghz at stock speed while even the infamous old 4770k and devil's canyon can run at 4.2-4.4ghz with 1.19v.
Here are pictures:
i7 stock speed with high voltage
http://kepfeltoltes.hu/140829/stock_...toltes.hu_.png
i7 underclocked to 3.4ghz (98% max in windows power management)
http://kepfeltoltes.hu/140829/stock_...toltes.hu_.png

Motherboard: asus z97m-plus
CPU: I7 4790


My System SpecsSystem Spec
.
29 Aug 2014   #2
Layback Bear

Windows 7 Pro. 64/SP-1
 
 

Some Haswell do run hot. Temps at idle mean very little.
What program are you using to measure your temps?

If it was my computer three things I would try first.

1. Set bios to default and do not use XMP. No over clock of anything.

2. Replace the cpu stock cooler with a quality cpu after market cooler. I never have or ever will use a stock cpu cooler.

3. Make sure your case has proper air flow so all the innards get proper air flow. You don't list your case or power supply and many other things.

Could you fill in your system specs completely. Look at my specs and it will give your a idea of the information that helps others.

Your system is probable running into temp problems and throttling back.

Please use this tutorial by Brink to post screen shots.

Screenshots and Files - Upload and Post in Seven Forums
My System SpecsSystem Spec
29 Aug 2014   #3
Vistangel

Windows 7 Home Premium x64
 
 

Quote   Quote: Originally Posted by Layback Bear View Post
Some Haswell do run hot. Temps at idle mean very little.
What program are you using to measure your temps?

If it was my computer three things I would try first.

1. Set bios to default and do not use XMP. No over clock of anything.

2. Replace the cpu stock cooler with a quality cpu after market cooler. I never have or ever will use a stock cpu cooler.

3. Make sure your case has proper air flow so all the innards get proper air flow. You don't list your case or power supply and many other things.

Could you fill in your system specs completely. Look at my specs and it will give your a idea of the information that helps others.

Your system is probable running into temp problems and throttling back.

Please use this tutorial by Brink to post screen shots.

Screenshots and Files - Upload and Post in Seven Forums
I refreshed system specs with more info. But I never mentioned my CPU thermal throttles, it goes on turbo boost at 3.8ghz constantly while rendering at 86C max (when I made the picture, the fans weren't on max) and it doesn't do anything bad to performance. I use the defauilt BIOS settings, no modifications has been made. As you could see in the screenshots, I used HWmonitor but Speccy shows the same temps.
Airflow is 100% perfect as it is a gamer case - altough I never use it for gaming - and the idle temp seems good with stock cooler and the HDD/SSD are always at 30C. I have the stock cooler and the stock case fan. If I set both fans to maximum, the temps will be lower around 82-83C max.
My problem is that it gets too hot quickly. I mean in like 6 second after starting rendering, it goes up to 80C no matter what I do. It's not too high temp, doesn't draw back performance but irritating and weird. If I set the clock to just a little bit lower (as the second pic shows at 3.4ghz) its temps are great.
Seems like my motherboard is overvolting the CPU at max speed and it's too damn high at 3.8ghz but even on 3.4ghz, the voltage is good. I don't know how to overvolt or undervolt (I don't really know much about overclocking, it's not even a K chip and I'll overclock it when it will be outdated processor - I can with this mobo) so I would like to know about that: how to undervolt it at max speed?
My System SpecsSystem Spec
.

29 Aug 2014   #4
Vistangel

Windows 7 Home Premium x64
 
 

Quote   Quote: Originally Posted by Vistangel View Post
Quote   Quote: Originally Posted by Layback Bear View Post
Some Haswell do run hot. Temps at idle mean very little.
What program are you using to measure your temps?

If it was my computer three things I would try first.

1. Set bios to default and do not use XMP. No over clock of anything.

2. Replace the cpu stock cooler with a quality cpu after market cooler. I never have or ever will use a stock cpu cooler.

3. Make sure your case has proper air flow so all the innards get proper air flow. You don't list your case or power supply and many other things.

Could you fill in your system specs completely. Look at my specs and it will give your a idea of the information that helps others.

Your system is probable running into temp problems and throttling back.

Please use this tutorial by Brink to post screen shots.

Screenshots and Files - Upload and Post in Seven Forums
I refreshed system specs with more info. But I never mentioned my CPU thermal throttles, it goes on turbo boost at 3.8ghz constantly while rendering at 86C max (when I made the picture, the fans weren't on max) and it doesn't do anything bad to performance. I use the defauilt BIOS settings, no modifications has been made. As you could see in the screenshots, I used HWmonitor but Speccy shows the same temps.
Airflow is 100% perfect as it is a gamer case - altough I never use it for gaming - and the idle temp seems good with stock cooler and the HDD/SSD are always at 30C. I have the stock cooler and the stock case fan. If I set both fans to maximum, the temps will be lower around 82-83C max.
My problem is that it gets too hot quickly. I mean in like 6 second after starting rendering, it goes up to 80C no matter what I do. It's not too high temp, doesn't draw back performance but irritating and weird. If I set the clock to just a little bit lower (as the second pic shows at 3.4ghz) its temps are great.
Seems like my motherboard is overvolting the CPU at max speed and it's too damn high at 3.8ghz but even on 3.4ghz, the voltage is good. I don't know how to overvolt or undervolt (I don't really know much about overclocking, it's not even a K chip and I'll overclock it when it will be outdated processor - I can with this mobo) so I would like to know about that: how to undervolt it at max speed?
Oh and btw the PSU usually coil whines when using the CPU at max load and after that it continues whining when the CPU is idle for another 1.5-2 hours. I don't think it has anything to do with the CPU temps but you asked about the PSU so I tell this info maybe it matters.
My System SpecsSystem Spec
29 Aug 2014   #5
Layback Bear

Windows 7 Pro. 64/SP-1
 
 

Any power supply that coil wines is junk. I would not even start my computer with a power supply doing such a thing.

To me a intel cpu even a Haswell that reaches those temps need a better cpu cooler.

You case is a ATX micro case and therefore limited on it cooling ability.
Just because the word (gaming) is used does not mean anything on it's ability to cool. It just a name used to sell things.

To put it simple.
If you are running your system at a default bios and you are running hot you need more cooling. All the chit chat in the world will not change that.
My System SpecsSystem Spec
29 Aug 2014   #6
Vistangel

Windows 7 Home Premium x64
 
 

Quote   Quote: Originally Posted by Layback Bear View Post
Any power supply that coil wines is junk. I would not even start my computer with a power supply doing such a thing.

To me a intel cpu even a Haswell that reaches those temps need a better cpu cooler.

You case is a ATX micro case and therefore limited on it cooling ability.
Just because the word (gaming) is used does not mean anything on it's ability to cool. It just a name used to sell things.

To put it simple.
If you are running your system at a default bios and you are running hot you need more cooling. All the chit chat in the world will not change that.
Maybe I'll have to buy some fans for the case then. But it blows out cold air so I don't really see how can I cool it more without changing the CPU cooler. The case fan places are on the left side, against the CPU cooler and it blows out very cool air even when the CPU is at 100% load. And there's the built in case fan on the back, below the PSU and it directly blows out the air too. It seems logical and good.

As you've seen I clearly don't want to change the CPU cooler... because:
1.) Money issues (if I had more, I'd have bought the corsair h100)
2.) They sell thermal paste in just like 1-2 stores on the net here which I don't really trust
3.) They don't sell 90% alcohol which is needed for cleaning the thermal paste here, the only alcohol they sell is in the pharmacy which is 70% and is clearly not for cleaning the processor thermal paste so I don't have a clue where I can get it. They don't even sell magnetic screwdrivers so I don't know how they repair laptops or build the PCs at services/PC stores then.

And you're right about the PSU it's very irritating and loud and it's under warranty (It's new) so I'll maybe try to replace it but right now I needed the new PC - and still need it - so I can't just send it back.

Btw why is it that the Asus AI suite shows that at 100% load the CPU is just on 60-65C but Speccy and hwmonitor shows that it's on 82C?
And why is there tz00 and tz01 (first always shows 28C and the second shows 35C) on the motherboard temps in hwmonitor? Speccy uses the tz00 and shows that the motherboard is always at 28C.
My System SpecsSystem Spec
29 Aug 2014   #7
Layback Bear

Windows 7 Pro. 64/SP-1
 
 

I have never found Asus A suites to be any good. I have at the present time 2 computers with Asus motherboards and will not use their Asus A suites.
I use Real Temp with Intel cpu's and Speccy.
70 percent alcohol will work in a pinch. A product made by 3M called Brake Clean will also work. It leaves no residue. I still use Arctic Silver 5.

Arctic Silver, Inc. - Thermal Compounds

Arctic silver also makes a cleaning solution.
My System SpecsSystem Spec
02 Sep 2014   #8
essenbe

Windows 7 Enterprise X64/Windows 10 Enterprise X64/Windows 10 Pro X64/Linux Mint
 
 

Layback Bear is correct in what he is telling you. I have a whole box of stock coolers that I have never used, simply because of the problem you are having. The do not work well at all and will not do the job you need. Sure, they would most likely be OK if you were reading email and just browsing. But, if you are doing real work, you need something better. You don't have to get a Corsair H100 to make a big improvement in your cooling. If your case will take it, a Cooler Master Hyper 212 Evo is quite reasonable and will do much better than the stock cooler.

Layback Bear is also right about the PSU. Why does it have coil whine? Most likely because it is not functioning properly. When a PSU dies, it can take out your Motherboard, Graphics card or anything else. You wouldn't be the first person to lose a computer because of a bad PSU. Am I saying that will happen? No, but I am saying that is one of the several very bad things a bad PSU can do. Most reputable companies, like Cooler master usually is, will do an advance RMA. You give them a credit card number, to protect them and they will send you the new PSU. You then have a time period to ship the bad one back, and when they receive it in time, your card will not be charged. I have done several of those and never had my card charged.
My System SpecsSystem Spec
02 Sep 2014   #9
logicearth

Windows 10 Pro (x64)
 
 

BTW, 86c is perfectly fine load temperature with a stock air cooler. You are still under the termal limits.
My System SpecsSystem Spec
10 Sep 2014   #10
Vistangel

Windows 7 Home Premium x64
 
 
Solved by undervolting

Quote   Quote: Originally Posted by Layback Bear View Post
I have never found Asus A suites to be any good. I have at the present time 2 computers with Asus motherboards and will not use their Asus A suites.
I use Real Temp with Intel cpu's and Speccy.
70 percent alcohol will work in a pinch. A product made by 3M called Brake Clean will also work. It leaves no residue. I still use Arctic Silver 5.

Arctic Silver, Inc. - Thermal Compounds

Arctic silver also makes a cleaning solution.
Quote   Quote: Originally Posted by essenbe View Post
Layback Bear is correct in what he is telling you. I have a whole box of stock coolers that I have never used, simply because of the problem you are having. The do not work well at all and will not do the job you need. Sure, they would most likely be OK if you were reading email and just browsing. But, if you are doing real work, you need something better. You don't have to get a Corsair H100 to make a big improvement in your cooling. If your case will take it, a Cooler Master Hyper 212 Evo is quite reasonable and will do much better than the stock cooler.

Layback Bear is also right about the PSU. Why does it have coil whine? Most likely because it is not functioning properly. When a PSU dies, it can take out your Motherboard, Graphics card or anything else. You wouldn't be the first person to lose a computer because of a bad PSU. Am I saying that will happen? No, but I am saying that is one of the several very bad things a bad PSU can do. Most reputable companies, like Cooler master usually is, will do an advance RMA. You give them a credit card number, to protect them and they will send you the new PSU. You then have a time period to ship the bad one back, and when they receive it in time, your card will not be charged. I have done several of those and never had my card charged.
Quote   Quote: Originally Posted by logicearth View Post
BTW, 86c is perfectly fine load temperature with a stock air cooler. You are still under the termal limits.
Oh I undervolted the processor with offset -0.120v and now it's perfect with stock cooler/stock paste!
100% stress test is 75-80C @ 1.038v (back then 92C @ 1.228v/1.194v)
Rendering is about 66-74C @ 1.030v (then 86C @ 1.15v)
Idle is 30-31 @ 0.590v (instead of 34-38C @ 0.73v)
Never goes over 40C when watching videos/using virtual machines and it's on 50C when gaming.
It became SUPER GOOD and cool with stock cooler! It's one of the best temps I've seen for Haswell.
Thanks for the replies.
My System SpecsSystem Spec
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