Need opinions / sollutions on my CPU and GPU temps.

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Kongkarl

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Dec 4, 2015
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List of my settup

http://pcpartpicker.com/p/yzKX4D



I got myself this build a month ago, but changed the stock cooler because it was too loud and too hot. Changed it to Corsair H75 a watercooler. So what I am wondering in general is if I have installed my fans correctly, if my temps are too high and what settings my fans should be at, in BIOS. I feel that my temps are too high and that my fans are to loud during load.


http://i.imgur.com/uWQ4zva.jpg Here you can see how the overall flow in the cabinet is. At least I think it works like that!


CPU fans (push pull) - CPU_Fan

CPU watercooling block - CPU_OPT (I made settings on full speed in bios for this)

Front fan - SYS_FAN 1


Top fan - SYS_FAN3


So my R9 390 idles at 60 degrees. I am using dual monitor, so I guess that's the reason for it. But during heavy games like witcher 3 on ultra it's at 75-80 degrees. Isn't this too much?


My CPU. I've been strugling much with this, I see people on youtube who play games with their cpu at 45 degrees etc, I have visited so many forums and get so much info of someone saying this and someone saying that. Confusing. Anyway my cpu is at around 50-55 degrees on easier games such as wow, hots etc.


If I play bf4, h1z1, witcher 3 that's when cpu temps are getting crazy (I think). It varries from 60-80 degrees depending on how long I play, and the fan noices are quite high aswell, but steady.

So what do you guys think?



Yes, I am pretty sure my waterblock is mounted correctly. I got a big lesson on this while mounting the stock cooler. I made sure to clean my cpu and at this point I am starting to think that my airflow in my case is bad, settings in bios or something is bad or that maybe something is deffect.


edit: typos
 
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DonkeyOatie

DonkeyOatie

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Sep 16, 2014
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The i7 4790K does run hotter ,but those temperatures are a bit higher than I'd like.

We need to work through one thing at a time.

If there is an airflow problem, then the system will usually run much cooler with one (or more) of the side panels removed, assuming your computer is in a location where it gets good airflow (Not in a tight corner between a desk panel and two walls) Remove the side panel(s) and play the games and see what effect this has on the temperatures. A moderate drop (5-ish degrees) is nothing, but a fifteen degree drop suggests bad air flow.
 
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Kongkarl

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Okey I will play those games for maybe 1 hour or 2 without the sidepannels while monitoring everything in the case. I'll get back to you with the results !
 
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K

Kongkarl

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Dec 4, 2015
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So I'm done testing the temps without the side panels. Here is what I got.


Without sidepanels during "heavy" games:

CPU: 51-56 degrees .

GPU: 71 degrees.


With sidepanels on during "heavy" games:

CPU: 63-66 (peaked at 69 once)

GPU: 77 degrees.


So maybe this is an airflow problem? But I think that most of the heat comes from the GPU. When the sidepanels was off, I could feel the hot air releasing from the GPU. It's blowing in the direction where my panel was, so it was sent straight out of the case. I also noticed that my tubes from the waterblock was an inch above the GPU, and I think the tubes might get affected from that too? Not really sure tho.

I'd really appreciate some tips!
 
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DonkeyOatie

DonkeyOatie

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Sep 16, 2014
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No. That's not quite enough of a drop for an 'airflow' problem. You can, likely, reduce temperatures a bit with better cable management and maybe moving some fans. Every system is different and it's a matter of trial and error for me.

With a radiator you have to make one of two choices, use it as an intake or use it as an exhaust.

If you use it as an intake, then it is most efficient because it gets the coldest air coming in, but it dumps the energy into the case, which means you need a lot of exhaust to keep the air flowing.

If you use it as an exhaust, it is less efficient because it is using the warmer air from the inside of the case, but it dumps its energy outside the case. In this situation, you need more intake to keep the air in the case moving.

I like to organize my cases with more intake than exhaust to maintain a positive pressure, to help keep the dust out.

Things you can consider. (suck it and see, trial and error)

1. Swap the roof exhaust and the radiator. That will move the radiator further from the GPU and allow the exhaust to move the air straight through.
2. Mount the radiator as an intake on the front, keeping the existing intake if possible, but moving that fan to the lower position.
3. Add a second front intake.

And that's also the order I'd do things.


S
 
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