4790k temps for new build

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cheapfrag2

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May 17, 2014
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Hi all,

I put together my new build 2 days ago. I have an i7-4790k CPU, Gigabyte GA-Z97X-Gaming 7, Cooler Master Hyper 212 EVO, Gigabyte Radeon R9 290 OC.

My ambient temp is 22-22.5c.

All BIOS settings are at default.

The Core Voltage is 1.26v as reported by CPU-Z. Temps are reported by SpeedFan.

At idle:
Core 0: 28c
Core 1: 27c
Core 2: 24c
Core 3: 24c

CPU Fan at 696 RPM

At load using Prime 26.6 Small FFTs at 10 minutes:
Core 0: 78-81c
Core 1: 79-82c
Core 2: 77-84c
Core 3: 71-73c

CPU Fan at 1819 RPM.

Are those temps acceptable given the core voltage I'm running at?

Also, why is Core 3 running so much cooler than the others?

Thanks in advance for your comments.
 
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mr91

mr91

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The temps are acceptable however I've seen better...
Did you get a L3 or L4 Batch?
 
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mr91

mr91

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I use OCCT which is very intense like prime 95...

I tried Aida before however it doesn't push the cpu to it's limits...

"Aida temperatures are similar real world temperatures when gaming"

" I've never been able to push my cpu like OCCT"

I agree enamak considering you're using a entry level after market cooler your prime 95 temps are not bad.
"I suggest you add more fans and try to improve the air flow"

check out the scores below with h 80i which in theory is a better cooler.

http://www.anandtech.com/show/8227/devils-canyon-review-intel-core-i7-4790k-and-i5-4690k/2

The cpu in the above review is a probably a l3 batch and made in 2013, I heard they run a little hotter than the L4 batch made this year...






 
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enamak

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I find Prime 95 a better option over OCCT, but OCCT also stresses your cpu a lot, or even more.
Yes the H80 its obviously better than the 212 EVO, but personally i dont like the H series, or any liquid/ hybrid cooler, they are very noisy and have risk of leaking.
You can add another fan to the EVO so you do push/pull, and apply a better thermal past like MX-4. And also improve the air flow in the case as mr 91 said. I think if you do this it can help yout temperatures by a little. But if you are worried you can always get a top air cooler like noctua nh-d14.
 
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mr91

mr91

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Why do you like Prime 95 better? I never got into prime 95 however many people on the forums are saying it's better than occt...




 
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enamak

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Well i find it better to see if your system is stable cause it stresses your cpu and ram a lot. OCCT i dont use it often, i think it stresses the cpu more than it should (i know thats the point, but occt IMO push the cpu more than a test like prime95 and aida should), and it makes my cpu hotter than prime95! Its insane, the same thing with the gpu test of occt, wich i already heard that can kill some gpus!
 
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cheapfrag2

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Sorry for posting a question and then disappearing for a couple of days. Thanks you two for the information.

A couple of questions... I have a Fractal Design Define R4 with 2 140mm fans in front for intake, one 140mm on the top of the case closest to back exhaust and one 140mm back of case at top exhaust. The CPU is pushing air from the front of the fins toward the back exhaust fans. Does that seem acceptable?

I used the included TIM and used the pea-sized dot in the center method... first time applying the paste myself... would you say that the temps indicate that I did an acceptable job applying the paste?

How can I tell if I have an L3 or L4 processor?

Is the best/easiest way to bring down the temps to lower the voltage? Any suggestions on a lower but always stable voltage?

Finally, "But if you are worried" - I guess I'm trying to determine if I should be worried. If the temps are "acceptable" under Prime95 load, then I think that's good for me
 
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enamak

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You should be good. I myself use a front 180 to intake, 1 at rear 120 and other 140 top, these both to exhaust. So yes your cpu cooler should intake from the front, aand exhaust towards the rear fan that exhaust the hot air.
But dont worry much :) you will never hit those temps at gaming, prime 95 pushed the cpu much more than u will ever do. And you cant forget that haswell cpus can get damn hot.
Tho if you want to overcclock id recommend u to buy a better air cooler or even a liquid cooler :)
Cant answer about the l3 or l4 im sorry.
I dont know much of overclocking, but u are using 1.26v, isnt that to much for stock speed. Sorry if im saying some stupid thing haha
 
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mr91

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The white sticker on the cpu retail box has the batch # on it...
 
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cheapfrag2

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So I have a an L4 processor.

I lowered the CPU voltage from 1.26v to 1.12v. Doesn't make any difference at IDLE, but now when I run Prime95 Small FFTs (26.6) my temperatures are:

At LOAD using Prime 26.6 Small FFTs for a couple of hours:
Core 0: 62-64c
Core 1: 61-63c
Core 2: 61-64c
Core 3: 55-57c

CPU Fan at 1517 RPM

About 15c cooler!

But I have come across something strange... I can't get CPU-Z to report my bus speed at 100 MHz (even before the voltage reduction). At 100 Mhz setting in the BIOS, CPU-Z was reporting it was 99.76 MHz.
Adjusting the Core Bus Speed in the BIOS has the following results:
BIOS setting --> CPU-Z reading
100.00 ---------> 99.76
100.01 ---------> 99.98
100.02 ---------> 99.98
100.03 ---------> 100.05
100.04 ---------> 100.05
100.05 ---------> 100.05
100.06 ---------> 100.05
100.07 ---------> 100.05
100.08 ---------> 100.05
100.09 ---------> 100.08
100.10 ---------> 100.08


Anyone have any ideas or suggestions?
 
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mr91

mr91

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I wouldn't worry about these values are not static in in cpu z.

My bus speed is 100.10 however it changes to 100.09 or 100.11, this is not a big deal...

" Your cpu should be 4389.44 with your bus of 99.76, overclocking your bclk to 100.5 should not effect your stability and give yo an effective speed of 4402.2 MHz in cpu z

You could potentially resolve this issue in the bios however it could be time consuming and unnecessary...
 
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