4790K with H105 on Maximus VII Formula Temperature Problem

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PaulHS

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Hey guys,

I recently just built my first PC and am very excited to have it running. I have a question however if there is anything wrong with the temperature my PC runs at. I have a 4790K CPU with H105 installed on Maximus VII Formula with 2 8Gb 2400MHz RAMS alongside with 5 fans and decent airflow (in my opinion :p )

It is not overclocked, and I have all the settings on default with adaptive core settings that ASUS motherboard has. When I look at CPU-Z core voltage and core speed fluctuate (downwards, not upards). Idle temperature is around 30C.

When I run stress tests, these are the results I get:

Prime95: High 80's, close to 90s C
AIDA64: Low to mid 60's C
RealBench: mid 60's C

Is there a problem with my CPU and temperature? I was very happy at first but when I read posts of people with same motherboard and cooler running in max 60s and 70s with prim95 I got a little scared because I'm new to building a PC.. Is there even anything for me to worry about? If there is what should I do? If there is what should I do? I ordered Arctic Silver 5 just in case if I need to reapply my cooler so I'll be trying that out if it is necessary. Should I RMA my CPU or cooler? Thanks for your input in advance guys I really appreciate it.





 
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PaulHS

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What range of temperatures should I be expecting? Are all my temperatures including idle, AIDA64, Realbench, etc too hot? (I feel prime95 is way too hot...)
 
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Abmario

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You've got great setup there from cpu, board to cooling system. But remember not all cpu are identical when its come to overclocking. If you are not into hardcore overclocking, you may just wanna go to stable (including better temp) and better clock speed for your cpu that will run your system well. With the latest Motherboard features and programs, you may not wanna need stress test your cpu to obtain acceptable speed.

I found this in previous thread:

Stop using AIDA or something like that, get RoG Real Bench, HWiNFO64 and Intel ETU.

Use these BIOS settings

AI Overclock Tuner = Auto
1-Core Ratio Limit = 44 (all others should automatically change with Sync all cores selected above)
Max. CPU Cache Ratio = Auto
Min. CPU Cache Ratio = Auto
Fully Manual Mode = Disabled
Core Voltage = Adaptive
Additional Turbo Mode CPU Core Voltage = 1.200
Core Cache Voltage = Adaptive
Additional Turbo Mode CPU Cache Voltage = Auto
Eventual CPU Input Voltage = 1.90
DRAM Voltage = Auto

Right Clicking (IIRC) lets you add each of those to your favorites page so you don't have to keep going looking for them over and over again.

4. Run the Benchmark and repeat steps 4 and 5 from above.

http://www.tomshardware.com/answers/id-2261526/ocing-4790k-devils-canyon.html

The OP there got 4.8Ghz by following the instructions, I got same specs as yours (only H70 cooler) and happy with 4.6GHz never get BSOD, so far so good.
 
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PaulHS

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Thanks for your reply abmario. I'm not into hardcore overclocking, just want a stable gaming rig that doesn't get too hot so I can use it for a long time :) So I should go ahead and change my BIOS settings to what you listed right? With temperatures do you think I should still reseat the CPU cooler with new thermal paste?
 
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MeteorsRaining

MeteorsRaining

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Seeing your idle and AIDA64 temps (which're fine), I'd say 70C-80C will be what I ideally expect in Prime95.

And NOTE: Never enter settings for OC from net, every chip is different, manually OCing step by step is the best method.
 
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PaulHS

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Thanks for your reply MeteorsRaining.

Yeah so my idle, AIDA64, and RealBench temperatures are okay right? I find it confusing that my Prime95 is the only one showing such a high temperature and it scared me in the beginning when I only ran Prime95 because it made me think my first PC build went totally wrong haha I should still go ahead and reapply the thermal paste and reseat the CPU cooler as you stated? I read about gaps between backplate of H105 and thinner motherboards and to use washers to increase pressure of the cooler to the CPU. Does anyone know if that will fix this? Seeing AIDA64 and RealBench temperatures are okay I don't know if it is in fact a problem with mounting :S

And noted, I'm too big of a coward to explore the world of manual OCing at the moment, only a newbie yet.
 
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Abmario

Abmario

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I believe you don't have a problem with your cpu cooler installation particular to thermal paste and cooler but you can check it again.. Those high temps are expected when your are stress testing your cpu. I agree with MeteorsRaining, I manually tweak bios settings, trial from lower setting going higher till where my cpu gets acceptable temp and better clock speed, I prefer below 80C, only thing is I never used AIDA64 or Prime95. Continuously monitor you cpu temp till you get system stable at a certain clock speed.
 
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MeteorsRaining

MeteorsRaining

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Yes AIDA64 and RB temps are fine, Prime95 is one of the most hammering test, which version are you using? If it's something after 26, then get an older version, newer one overly heats your CPU to unnecessary levels. And do this before you reseat CPU cooler and paste.

And you don't need to tamper with the backplate, as the temps seem okish.

Also, a major point here, know your chip before you OC, simply putting settings from another rig, similar to yours, won't give you the best OC. The usual method of manually OCing by increasing multiplier, stress testing (max safe temp= 85C), increasing VCore if needed (by 0.05V), and moving up till you reach 1.35V with acceptable temps.
 
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PaulHS

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Will do. I'm not planning to overclock manually for now, I'm satisfied with ASUS BIOS automatically doing its magic and adapting Vcore, turbo core, and everything.

I'm still a bit worried if my CPU is faulty or I installed my cooler wrong. When I go into BIOS temperature stays around 35ish and when I get into my Windows OS, it starts at mid-high 30's and slowly drop down to 30ish, even around 27. There is no problem here right?

The extremely high Prime95 temperature, however, is something that is still not solved so I don't know if it is the matter of I should be using washers to apply more cooler pressure to the CPU :S But do you think this is the problem despite the fact that AIDA64 and RealBench results showed mid-60s?
 
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PaulHS

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I just checked and it's version 28.5 oh my god maybe I was torturing my CPU with a terribad softwar T-T Is there possibility that I damaged my CPU....? I ran it less than 5 times with less than 5 minutes each :S I will download a version prior to 26 and test it out again. Thanks for the advice!

Ah okay it's comforting to hear that the backplate is okay (phew) haha

I will take note of that. I am really interested in customizing PC. I haven't had the opportunity to tweak my rig up, but I am so excited to start exploring this whole world of overclocking!
 
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PaulHS

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Oh wow, I just ran Prime95 version 26.6 and got around 60C with Vcore 1.231 and 4.4Ghz speed. Is that alright? So I don't have any defective part or misinstallation or anything right? This has bothered me so much all day long I am so happy that I may have been worrying for nothing in the end T-T I still spent money on a new thermal paste so I don't know if I should open up that CPU cooler and apply it... haha
 
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Abmario

Abmario

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As long as you follow cooler installation guide you'll be fine. And Here is a link for thermal paste application:
http://www.tomshardware.com/forum/333968-28-thermal-paste-removal-installation-guide

Also check your push/pull fan arrangement on radiator. Also a reminder, your the cpu coolers (either closed-lood and air heatsink) cannot decrease the temperature lower the the surrounding temperature. Feel the exhaust of your casing if its hot.

Regarding Prime95, its extreme stress test make Haswell CPUs hot compare to AIDA64.. Most likely you'll get higher temp on Prime95.
 
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PaulHS

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Thank you so much! Thank god nothing is wrong. Thank you for all your help guys. I'll decide to be brave/adventurous or not when the paste arrives haha Don't know if the Arctic Silver 5's performance compared to the stock paste on H105 is substantially better but at least I have the option to do so now. Thanks again and if anyone thinks or have something to say otherwise please do!
 
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PaulHS

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Thanks Abmario, so if my Prime95 version 28.5 showed temperatures in the 90s and Prime95 version 26.6 showed temperature of 60s, should I still be worried about it?

I have 4 intake fans (2 front and 2 on radiator) and 1 exhaust and the exhaust air feels cool. Right now my idle temperature shows 27,28,30,33. Do you think there is something that I should be worried of?

Sorry I'm asking so many questions, this is my first PC build and I'm just overprotecting this baby that I love so much :p

 
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PaulHS

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I see I see good to know! Thank you so much haha World is so much better with people like y'all
 
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Abmario

Abmario

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I see. Your H105 has only 2 fans blows heat from radiator out your casing, it would more ever better if it got 2 push and 2 pull fans - but 2 is good enough.. (In my water-cooled I got to changed the fans to high performance corsair fans, but it's not necessarily)
CPU is not the only part of your pc that exhaust heat, you have motherboard caps, graphics card, ram, and even psu in some arrangement. If you got only two chassis fans, it may not able to remove all those heat outside from your case, then those 2 radiator fans could get the hot air from inside blows to radiator out to your casing.
The temp is cpu quite ok.
Your motherboard can accommodate more sys_fan, if you could add more fans later may change better temp.
 
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