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4790k Temp Advice

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October 9, 2014 9:01:58 AM

I got a 4790k CPU on an ASUS Maximus VI Hero board. Its being cooled by a Corsair H110 with 2 fans in the outtake position. I also have 2 of the same 140mm fans intaking air into the case. Wires have been managed and arent interrupting airflow. I was careful about putting the heatsink on. My lowest temps on the CPU are 25C, and my highest temps are 65C. I am not overclocking at all yet.

Are these normal for using this kind of cooling system?
What is the temp ceiling I should be avoiding when overclocking?

More about : 4790k temp advice

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October 9, 2014 9:04:41 AM

istari675 said:
I got a 4790k CPU on an ASUS Maximus VI Hero board. Its being cooled by a Corsair H110 with 2 fans in the outtake position. I also have 2 of the same 140mm fans intaking air into the case. Wires have been managed and arent interrupting airflow. I was careful about putting the heatsink on. My lowest temps on the CPU are 25C, and my highest temps are 65C. I am not overclocking at all yet.

Are these normal for using this kind of cooling system?
What is the temp ceiling I should be avoiding when overclocking?


What do you mean by you have two fans for intake? How do you have the fans set up, are they pushing air through the radiator or pulling? And are you using two fans on the radiator or are all four on it?

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October 9, 2014 9:14:57 AM

frag06 said:
istari675 said:
I got a 4790k CPU on an ASUS Maximus VI Hero board. Its being cooled by a Corsair H110 with 2 fans in the outtake position. I also have 2 of the same 140mm fans intaking air into the case. Wires have been managed and arent interrupting airflow. I was careful about putting the heatsink on. My lowest temps on the CPU are 25C, and my highest temps are 65C. I am not overclocking at all yet.

Are these normal for using this kind of cooling system?
What is the temp ceiling I should be avoiding when overclocking?


What do you mean by you have two fans for intake? How do you have the fans set up, are they pushing air through the radiator or pulling? And are you using two fans on the radiator or are all four on it?



Same fans as in same model fans. I have 2 140mm fans intaking air through the front dust filter, and I have 2 fans exhausting air through the top hooked up to the h110 radiator both set in a pull configuration.
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October 9, 2014 9:15:17 AM

istari675 said:
I got a 4790k CPU on an ASUS Maximus VI Hero board. Its being cooled by a Corsair H110 with 2 fans in the outtake position. I also have 2 of the same 140mm fans intaking air into the case. Wires have been managed and arent interrupting airflow. I was careful about putting the heatsink on. My lowest temps on the CPU are 25C, and my highest temps are 65C. I am not overclocking at all yet.

Are these normal for using this kind of cooling system?
What is the temp ceiling I should be avoiding when overclocking?


frag06 said:
istari675 said:
I got a 4790k CPU on an ASUS Maximus VI Hero board. Its being cooled by a Corsair H110 with 2 fans in the outtake position. I also have 2 of the same 140mm fans intaking air into the case. Wires have been managed and arent interrupting airflow. I was careful about putting the heatsink on. My lowest temps on the CPU are 25C, and my highest temps are 65C. I am not overclocking at all yet.

Are these normal for using this kind of cooling system?
What is the temp ceiling I should be avoiding when overclocking?


What do you mean by you have two fans for intake? How do you have the fans set up, are they pushing air through the radiator or pulling? And are you using two fans on the radiator or are all four on it?



The H100, in my opinion, isn't all that great. As to your fan arrangement, you should be pulling air through the radiator, not pushing it from inside the case. You would be best to get two more 120mm fans and have them in a push/pull configuration, drawing air in through the top of the case and then simply get a high flow rate rear 140mm (if possible, if not a 120mm) fan and have that extract the air.
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October 9, 2014 9:21:39 AM

Oh I said it was the h110. Or do you mean the hydro series altogether? I dont really have an option to put fresh air in the radiator because my case is too big and the radiator hose wont fit in the front. I could get another 2 fans for my radiator but I didnt realize that would be nessesary to overclock. I used this exact configuration on an AMD 8350, had it overclocked all the way up to 4.7, and kept it under 55C, and that uses more power than the 4790k so it should be hotter. What I am reading is that im already reaching the ceiling on this CPU.
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October 9, 2014 9:24:50 AM

istari675 said:
Oh I said it was the h110. Or do you mean the hydro series altogether? I dont really have an option to put fresh air in the radiator because my case is too big and the radiator hose wont fit in the front. I could get another 2 fans for my radiator but I didnt realize that would be nessesary to overclock. I used this exact configuration on an AMD 8350, had it overclocked all the way up to 4.7, and kept it under 55C, and that uses more power than the 4790k so it should be hotter. What I am reading is that im already reaching the ceiling on this CPU.


100C is the Tj max for the 4790K, but you never want it that hot. You can overclock, but only until your temps hit about 80C. Even that is uncomfortable, though, IMO.

What thermal paste did you use, and how did you apply it?

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October 9, 2014 9:29:15 AM

istari675 said:
Oh I said it was the h110. Or do you mean the hydro series altogether? I dont really have an option to put fresh air in the radiator because my case is too big and the radiator hose wont fit in the front. I could get another 2 fans for my radiator but I didnt realize that would be nessesary to overclock. I used this exact configuration on an AMD 8350, had it overclocked all the way up to 4.7, and kept it under 55C, and that uses more power than the 4790k so it should be hotter. What I am reading is that im already reaching the ceiling on this CPU.


Blame my poor eyesight, I thought that said H100, not H110. That said I would still recommend extra fans on the rad. I should also clarify that I did not mean that you should relocate the radiator, only that a radiator works best when air is being pulled though it, as it is in a car or truck. You cannot hope to get maximum cooling efficiency using only a push configuration.

I do have some other questions though, such as what thermal paste you are using and what case you have, as well as what GPU you are using, or more specifically what type of cooler it has.
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October 9, 2014 9:37:16 AM

frag06 said:
istari675 said:
Oh I said it was the h110. Or do you mean the hydro series altogether? I dont really have an option to put fresh air in the radiator because my case is too big and the radiator hose wont fit in the front. I could get another 2 fans for my radiator but I didnt realize that would be nessesary to overclock. I used this exact configuration on an AMD 8350, had it overclocked all the way up to 4.7, and kept it under 55C, and that uses more power than the 4790k so it should be hotter. What I am reading is that im already reaching the ceiling on this CPU.


100C is the TJ max for the 4790K, but you never want it that hot. You can overclock, but only until your temps hit about 80C. Even that is uncomfortable, though, IMO.

What thermal paste did you use, and how did you apply it?



Arctic Silver guide told me to use a line so I did a very short line of paste, I put down the heatsink, and lowered it slowly by turning each nob 360 degrees and going to the next one in an X motion to keep the spread even.

Yeah the radiator does have air being pulled through it. The only way to mount the h110 with 2 fans is in a pull configuration.

I am using MX-4 Thermal Compund, but I also have Artic Silver 5 I could use if I needed to.

The case is the Corsair 730T, and the fans are AeroCool DS 140mm. The VGA is an ASUS GTX780-DC2OC-3GD5, with its built in cooling system. These temp readings were taken using MSI Afterburners CPU benchmark utility so that wasnt doing much at the time.
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October 9, 2014 9:41:02 AM

To answer your original question. 65C is not an unusual temp with your set up. I have the 4790K and an H100i in a Corsair 650D case. I get 27C up to 66C when running "Intel extreme Tuning utility" benchmarking. I use Noctua thermal paste.
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October 9, 2014 9:43:51 AM

So what temps should I try to keep it under while overclocking? I want to overclock but im not gonna push it to its limits, I just want to make use of the gigantic radiator I have set up for it.
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October 9, 2014 10:09:28 AM

frag06 said:
istari675 said:
Oh I said it was the h110. Or do you mean the hydro series altogether? I dont really have an option to put fresh air in the radiator because my case is too big and the radiator hose wont fit in the front. I could get another 2 fans for my radiator but I didnt realize that would be nessesary to overclock. I used this exact configuration on an AMD 8350, had it overclocked all the way up to 4.7, and kept it under 55C, and that uses more power than the 4790k so it should be hotter. What I am reading is that im already reaching the ceiling on this CPU.


100C is the Tj max for the 4790K, but you never want it that hot. You can overclock, but only until your temps hit about 80C. Even that is uncomfortable, though, IMO.

What thermal paste did you use, and how did you apply it?



I agree with frag06. 80C max but I would feel more comfortable with 75C max. I have no data to back me up. Just my subjective opinion.
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October 9, 2014 10:22:40 AM

jas340 said:
frag06 said:
istari675 said:
Oh I said it was the h110. Or do you mean the hydro series altogether? I dont really have an option to put fresh air in the radiator because my case is too big and the radiator hose wont fit in the front. I could get another 2 fans for my radiator but I didnt realize that would be nessesary to overclock. I used this exact configuration on an AMD 8350, had it overclocked all the way up to 4.7, and kept it under 55C, and that uses more power than the 4790k so it should be hotter. What I am reading is that im already reaching the ceiling on this CPU.


100C is the Tj max for the 4790K, but you never want it that hot. You can overclock, but only until your temps hit about 80C. Even that is uncomfortable, though, IMO.

What thermal paste did you use, and how did you apply it?



I agree with frag06. 80C max but I would feel more comfortable with 75C max. I have no data to back me up. Just my subjective opinion.


I wouldn't want to push much past 70°c, especially as the tcase for the 4790k is just 72.72°c.
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October 9, 2014 10:25:11 AM

I think I might have messed up the thermal paste installation then. No way im that close to the ceiling on a cooling system this strong. Gonna reapply it and see if I can get different numbers and ill report back.
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October 9, 2014 11:51:32 AM

istari675 said:
I think I might have messed up the thermal paste installation then. No way im that close to the ceiling on a cooling system this strong. Gonna reapply it and see if I can get different numbers and ill report back.


Don't worry about the Tcase temp. You can't measure it and you aren't meant to. Go by how hot your cores are. Download Core Temp and Real Temp. You can OC, just try to stay below 75C - 80C.

Play a game like BF4 for a while to test stability and temps.
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October 9, 2014 11:53:02 AM

I got those temps through coretemp max temp average of all the cores is like 63Cish
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October 9, 2014 11:57:07 AM

istari675 said:
I got those temps through coretemp max temp average of all the cores is like 63Cish


Is this during gameplay, or running Prime?

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October 9, 2014 12:01:05 PM

Thats running a burn in utility. I used the one that comes with MSI Kombuster. I was getting around 55C playing wastelands 2 which isnt that optimized so the cores were all around 40%ish
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October 9, 2014 12:04:34 PM

istari675 said:
Thats running a burn in utility. I used the one that comes with MSI Kombuster. I was getting around 55C playing wastelands 2 which isnt that optimized so the cores were all around 40%ish


Do you have a CPU intensive game you can play, like BF4?

You shouldn't worry about the temps you get in CPU intensive programs if you only game. Those types of programs will use every bit of your CPU and push temps further than any game will.
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October 9, 2014 1:47:59 PM

Your temps are absolutely fine and in line with your setup. In terms of max for overclocking, try and stick to 70'ish... remember that gaming should not push this processor past 50 degrees... only torture tests like Prime95, AIDA and Intelburn do and even then they should top out at 80 max in Prime95.... hope this helps.
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October 9, 2014 2:25:28 PM

I just realized whats going on. I overestimated how quiet my fans were. AI Suite 3 is reporting my CPU temp at 35C at load while I set it to start kicking up the RPM at 50C. Of coarse the burn in tests are gonna be a bit hotter then they should be if the radiator fans are only running at 25%.

When I manually set all the fans to 100% and ran Prime95 the max temps I got were around 55c. I just need to figure out the comparability issue that is messing with the sensor in that program since im kind of stuck to it since no other fan control program is compatible with this board so far.
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