i7 4790k 1.188v 4.5Ghz temps

Nichaa

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Jul 25, 2017
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After doing some undervolting due to the high stock volts (1.266) and high temps, I have now done some stress testing in AIDA64. The temperatures though, are still a little bit uncomfortable, especially when I look at similar setups and same processors with same volts/Ghz.

After 12mins of AIDA64 my temps maxed as follows

CPU : 71C
Core 1: 83C
Core 2: 87C
Core 3: 85C
Core 4: 76C

I have 3 intake fans, 2 in the front one in the bottom. CPU cooler is a corsair h100i GTX with pump set to performance mode. 2 gtx 980 strix cards set at 40% fanspeed and one more fan as exhaust in the back.

I just purchased some thermal paste and will change that as soon as possible, I would like to get some suggestions though if someone else has been having same kinds of problems with their 4790k's. I know that my cooler works and all the fans are spinning etc. It's not up to that, and the temps definitely came down from what they were before the undervolting (the temps hit 90c even just gaming)

Thanks in advance!
 
Do you have the radiator setup somewhere it can get cool air? If that CPU is at stock speed and those temps then you have major issues. Either it can only get war air wherever in the case you have the radiator installed or your pump is starting to fail.
 
The radiator is setup on the top of the case with the stock corsair fans. Cpu is at 4.5Ghz as stated in my opening post. I also can't think of a reason for this behavior but I will change the thermal compound to see if that helps, the temps don't raise above what I have listed, so I don't think it's a faulty pump.
 
No worries man. I know the cpu is at no harm even in these temps, I just wonder if possibly there's some air bubbles or just bad contact with the block. I have even cleaned my rad and all the filters on my case. Considering where this chip was to where it is now, I'm already pretty happy but everyone else with same settings running ~20C lower baffles me. If the thermal compound switch doesn't yield results, I will probably just swap to some other cooler.
 


What are your stock CPU temps at idle, during gaming and at full load?
 


Do you mean with these volts and clock? Idle 33-40C depending on the core, Playing battlefield 1 maxed out 66-72C. Full load was in my opening post.

 


I mean stock settings. 90C is when OC'd and gaming? Another H100i user had temperature issues http://www.tomshardware.com/answers/id-3084719/4690k-reasonable-temps.html.

So far I blame the cooler install and the silicon lottery.

Motherboard?

CPU : 71C
Core 1: 83C
Core 2: 87C
Core 3: 85C

is at 100% on all 4 cores?

Try Intel's Burn Test I linked to in the other question.
 


No, not a single core hits 90C with these clocks and voltage, with stocks it did. BF1 package went from 90C to 71C.

Cooler is h100i GTX, the one you quoted had h105. MB is Asus maximus VII formula.
 


So, fresh out of the box you never installed the stock cooler. Straight to the bog boy. Wouldn't those high temps be an indication of a bad chip that has inadequate cooling stuff(sorry for that technical word) under the lid? A user shouldn't have to undervolt to stay away from those unsafe temps. What about Intel's Burn Test set to maximum with stock settings and cooler? An RMA or exchange seems in order.
 
I've read of multiple cases where 4790k owners had to undervolt because the stock voltage was stupidly high, mine was too. I have a feeling I could go even lower on the voltage, but I also think it is possible that I need to change the thermal compound. I will be doing that soon, so that might even solve the problem.
 



Hopefully so, without undervolting.
 
it does sound like you were unlucky with the silicon lottery on this chip

the most I've taken mine is 4.8ghz @ 1.32v and that never got past 73C

sounds like yours could do with delidding, although I know some people prefer not to because of the risk

just out of curiosity, when you installed the h100i... how much did you tighten down the block?
 


Tbh I am quite tempted to delid, but I don't have the tools to do so and aren't that massively concerned by the current state of the temps. If it stays below 75C when gaming I'm ok with that. The block is tightened to absolute max and I don't see anything that could interfere with it, but I will take a closer look when I change the paste. The cooler is h100i GTX, not h100i, which had some weird problems with bad seating.
 
check the block to see if it has any play/wobble

if you tighten too much it can start to strip the threads or damage the bracket, which can result in it not sitting correctly and overheating

It should just be firmly tightened, nothing more than that
 
OK, so after changing the paste (my first time, nothing has blown up yet) I ran AIDA for 10 mins and here are the temps

CPU MAX 63C
Core #1 MAX 75C
Core #2 MAX 78C
Core #3 MAX 75C
Core #4 MAX 69C

So around 8C cooler across all cores.

So yes, a little better, yet not optimal. Don't know if I have some changes to be made in the bios to better enhance the performance. Also read that the arctic silver 5 has a "break- in"-time which may result in couple degrees lower temps over time. The temps are from AIDA64 btw if that has anything to do with it, I had HWmonitor running at the same time as well which showed a bit, but only marginally different temps.