MX-4 Thermal Paste definetelly seems to have a curing time

[Viper]

When I first applied it this morning to my I7 8700K with my Cooler Master ML 240r AIO liquid cooler.. I was getting idle temps about 32C and stress test with Prime 95 at about 65. Now about 10 hours later I am getting idle temps at 27C and Prime 95 at about 60C. Anybody that can confirm this is a thing they have experienced before. I was thinking of changing to Grizzly Kryonaut but now I am thinkking its good enough. 8700ks run hot and 60C under stress is pretty good for that CPU I think.

[Arya]

Coffeelake is well behaved until you start overclocking it. If you're getting 60 at stock clocks, you'll probably have to de-lid before you can OC. Temps skyrocket once you disable Intel's single-core boost.

[Viper]

I'm not planning on overclocking it . I purchased the k CPU because it gives you and improvement of 400 MHz on the stock speed ( 3.2Ghz > 3.6GHz )and 100 MHZ aditional on the turbo ( 4.6GHZ>4.7GHz ). That was good enough for me. 60C at 4.7GHZ with 6/12 cores I am happy with. another 100-200 MHZ isn't going to gain me that much.

[Kaihekoa]

Ambient temperature probably changed. No point in getting expensive coolers or thermal paste if you're not even going to overclock.

[_I_]

yes, mx4 takes about a week with average use to cure
with watercooling and no oc it may never fully cure

as long as its not going over 90c its fine

[Viper]

Wrong Kaihekoa..I have an RGB setup in my PC. This is an RGB lighted liquid cooler..Fans and Pump. Also air cooling I would be lucky if I got 74C on that stress test.

Thank you for that info _|_ . I appreciate it.. I am glad to know it wasn't my imagination.

8700k is the hottest CPU right now I am pretty sure. It doesn't even come with a stock cooler. Intel knows the thing would just shut down immiditelly with there cooler.

[Kaihekoa]

Originally posted by Viper:

Wrong Kaihekoa..I have an RGB setup in my PC. This is an RGB lighted liquid cooler..Fans and Pump. Also air cooling I would be lucky if I got 74C on that stress test.

No, I'm right - curing takes alot longer than 10 hours and will barely be noticeable. Most AIOs aren't better than a good air cooler. Here's a $48 USD air cooler that cools as well as AIO coolers: https://www.tweaktown.com/reviews/8320/scythe-mugen-5-rev-cpu-cooler-review/index6.html. However, it doesn't matter. You're happy with your RGBs and whatever so enjoy.

[Viper]

That would look pretty bad in my Glass Corsair 570X case. I was going for looks when I put this PC together. Everything inside is lighted up and highly visible from the outside. If I had gone for a closed system I might have gone that direction. Thank you for the advice however. All that is on my CPU now is a round pump with a rotating RGB pattern. RGB is becoming a big thing these days.

[MarioTwins]

Did the room temp change about 5 degrees between tests ?

[Monk]

if you are leaving it stock, only 1 core will boost to 4.7GHz not all cores, why do you think its temps are so low ?

edit.
in hot weather, an aio will be a bit ahead, however, OP went for a coolermaster aio ... which, are not exactly one of the better ones, a noctua tower cooler would probably pull ahead to be honest.

[Jamebonds1]

It is probably thermal resistance or ambient temperature that's getting lower. So it is normally. It is calling case to sink and sink to ambient resistance. As you see, nothing to worry about.

PS: delid cpu isn't worth it. It could void warranty.

[FeilDOW]

Originally posted by Jamebonds1:

delid cpu isn't worth it. It could void the warranty.

It does void the warranty but it's so worth it if you want to OC and keep temps in check. I have never had a CPU die on me even with pushing high overclocks for a very long time so I don't worry about it. To be honest the CPU will likely last longer delidded because it stays much cooler, but if OP isn't going to OC not really much point anyhow.

[Jamebonds1]

Originally posted by FeilDOW:

Originally posted by Jamebonds1:

delid cpu isn't worth it. It could void the warranty.

It does void the warranty but it's so worth it if you want to OC and keep temps in check. I have never had a CPU die on me even with pushing high overclocks for a very long time so I don't worry about it. To be honest the CPU will likely last longer delidded because it stays much cooler, but if OP isn't going to OC not really much point anyhow.

I think at this point where it is clearly that I never recommend people to delid. If they break it, I wouldn't be responsible for it which is why I don't want to happenings. Ever though it is good that you delidded with no problem. It is not about what design is, it is about thermal resistance between junction to case. (come from police family)