CPU vs. GPU heat generation?

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TheMohawkNinja

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Aug 20, 2014
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Hello,

I am planning on buying both a 240mm and a 120mm radiator for my next computer build. I am going to be using a NZXT RL-KRG10-W1 Sleeve Kraken G10 GPU Bracket to allow me to put one of the radiator cooling blocks on the GPU to better cool it. My question is, which radiator should cool which component? I don't know which component, on average, tends to heat up faster.

In case it is relevant, I will be using a GTX 970 and an i7-4790k.
 
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BigBAWZ
Personally, I'd use the 240mm radiator for the GPU and the 120mm for the CPU. When idle usually your CPU will heat up more, but when gaming your GPU will definitely heat up more. I'm running a i5 3570k cooled with a Cooler Master Hyper 212+ and a Gigabyte GTX 770 on a 1440p monitor and my CPU will idle around 40 Celsius and GPU around 30 Celsius. When gaming, my CPU will hit around 50 Celsius and my GPU will be somewhere around the 60-70 Celsius. Hopefully this helped you decide. Let me know if you need anymore help!
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Justin Millard

Justin Millard

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Nov 22, 2014
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The stock coolers on both should work fine unless you are overclocking.

The CPU will heat up quickly at the start when you turn on the system, but then settle down. I've never managed to overheat a modern i7 during gaming, but professional video editors might have a different opinion. If you like to run intensive games on max settings for sessions longer than 3 hours on Summer days that's when you start to get component stress.
Although usually the GPU only gets damaged if it was faulty to begin with unless temps are over 80 degrees Celsius.

Honestly, cleaning the dust out of your case every four months has more impact on temperatures than any high end cooling system. However your components will be less heat stressed and last longer in a cooler environment.

Don't stress and follow the instructions that come with your new cooler. You will be able to set it up easily without needing help from us here.
 
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BigBAWZ

BigBAWZ

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Dec 25, 2012
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Personally, I'd use the 240mm radiator for the GPU and the 120mm for the CPU. When idle usually your CPU will heat up more, but when gaming your GPU will definitely heat up more. I'm running a i5 3570k cooled with a Cooler Master Hyper 212+ and a Gigabyte GTX 770 on a 1440p monitor and my CPU will idle around 40 Celsius and GPU around 30 Celsius. When gaming, my CPU will hit around 50 Celsius and my GPU will be somewhere around the 60-70 Celsius. Hopefully this helped you decide. Let me know if you need anymore help!
 
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