Which is more important: The paste, or how it's applied?

Ambular

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Mar 25, 2016
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I'll soon be swapping out the stock cooler on my i7-4790k for an Arctic Freezer 7 Pro Rev. 2 (not a lot of room in the case and I don't overclock, though I do have an XMP profile enabled. My house is just hard to keep cool in the summer, and I know these Haswell i7's run fairly hot.)

My plan is to use the pre-applied MX-2 thermal paste, but I also ordered a small tube of MX-4 so if I mess up the installation and need to reapply paste, I won't have to wait for it.

Now I'm curious, though, whether you guys think it would be worth it to wipe off the MX-2 and use the MX-4 instead? My understanding is that it's a superior product, but I've never applied thermal paste manually. I also understand that MX-2 is a reasonably decent product and that factory paste is optimally applied.

So which is more important? The product that's used, or how well it's applied?
 
Solution
The difference between the best and worst TIM is usually only a few degrees C. On a stock system, how it's applied is far more important. Since you're not overclocking, just use the stock paste until you have to remove the CPU cooler at some point.
The difference between the best and worst TIM is usually only a few degrees C. On a stock system, how it's applied is far more important. Since you're not overclocking, just use the stock paste until you have to remove the CPU cooler at some point.
 
Solution

Ambular

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Mar 25, 2016
356
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Thank you, I appreciate the help!