Question i7-9700k Cooling question.

[MajinAdell]

Good day everyone. I am posting this question because I am genuinely concerned about my i7 9700k.

I recently got this magnificent piece of tech because my previous cpu was way too old and finally managed to get this one.

My question is that my liquid cooling system I currently have is enough for the cpu: It is a Cooler Master Nepton 240M.

My current build is:
Gpu: Geforce 1080
Cpu: i7 9700k
Motherboard: msi Z390 gaming plus
Ram: 1×8GB ddr4 2666 Hyper (can't add more detail about it right now)
Psu:Evga 1300G2
Os:win 10 64bit

I ask this because during normal browsing on fresh Os setup the Nepton fans spin really fast, like 2870 spm. And they never did that before. Temps in idle are around 27~30 and the air that comes out is fresh. But sometimes they spin like hell and I managed to register temps like 45.

I do not dare to test it on load because I'm afraid for it to burn and I can't afford a new one.

I'd like to add that my previous cpu was an fx 9590 which if I am not mistaken it had way more tdp than this one. And I could run it without issues.



UPDATE:Ran through Battlefield 5,War thunder,World of warships,highest temps were 50 degree. And the insane spinning solved on its own after msi motherboard update.

 

[NightHawkRMX]

Yea, if a cooler could cool an FX9590, it could definitely cool a 9700k, and probably a nuclear reactor at the same time. Seriously, that CPU has a 220-watt tdp. You can't easily kill a CPU from heat, as it will shut off or slow down if it gets too hot. Those Idle temperatures are normal so I don't think you will run into to high cpu temps under load. Intel CPUs can run much hotter than the 9590, so as long as temps are under 80 your hardware is fine. If your cpu temps are under 100, its not ideal but won't hurt your CPU.
How old is this AIO? They have 3-5 year lifespan before the pump can fail or it leaks

 

[Karadjgne]

Few things.
Wow, that's a serious piece of hardware in that 1300w psu, you only needed a 650w version for a gtx1080, 750w at most.

The CM fans are high speed fans, so those numbers are not surprising but should top out at 2400rpm ±.

How do you have it hooked up? Most standard directions say to hook up the pump to the cpu_fan header and the fans to a sys_fan header by the included splitter, but that's asinine to say the least, the fans on Y should be on cpu_fan and the pump on cpu_aux/opt/pump header. This can make a difference as the cpu then reads cpu fan speeds not the pump speeds.

Temps with an AIO should be taken with a grain of salt. Picture the thermal strip inside a core. That's getting direct heat value. From there the heat has to travel through the TIM paste, then the IHS, (lid), then more thermal paste, then to the cooler plate, through that to the microfins, to be absorbed by the coolant in the fins, pump moves in the next batch etc. That whole heat migration takes a couple of seconds. Your cpu however reads temps 2x per second. So you'll see bouncing with loads, especially when the app first starts up and gets that instant load hit. Happens a lot in what you'd consider idle, but windows 10 is rarely ever idle, it's always doing telemetry, windows store updates, AV checks etc so will bounce from 30's to 50's easily, constantly.

 

[MajinAdell]

Thanks for the replies,i thought too that if it could handle a fx9590, a 9700k shouln't be a problem yet those spm scared me a bit,not to mention that it was so loud it gave me some headache. The nepton fans are on top of the case shooting air outside,i have a decent airflow inside,but nothing impressive. Yes i am aware that my psu is extremely exagerrated,but i got it new from a friend when my previous 750watt kicked the bucket. I can't test now because it is 3am but tomorrow i will try to give it some load with gaming. And hopefully update the situation.

Edit: The cooler is roughly 3 years old.