My i9-9900k gets very hot under all core loads, even at 4.5Ghz boost clock

[ArmanM]

I recently built a new PC with an i9-9900k, and a Corsair H115i Pro 280mm AIO. My workloads often consist of all core loads (3d rendering, and other multithreaded applications). When rendering, my temps go into the 95+C range, which is obviously too hot. I disabled multicore enhancement, and even lowered my max Core Frequency to 4.50Ghz in Intel Extreme Tuning Utility. I understand lowering to 4.5Ghz defeats the purpose of getting a 9900k, but I just wanted to see what temps I would get. Sure enough, even at 4.5Ghz my large workloads get into the high 90s, and begin to thermal throttle. Here are a few screenshots:

 

 

Even at this low voltage, and low boost clock, I still thermal throttle. Is this normal for my configuration? I'm not sure if I feel comfortable leaving my PC on over night at these temps. I'm pretty sure my cooler is seated properly, and the thermal paste that came pre-applied looked fine at the time of installation. 

[ArmanM]

1 minute ago, starcoaster said:

re-mount your cooler as a first step whenever you get temp readings like this

Will I have to clean off thermal paste, and then reapply it? Or is it fine to just remount without reapplying paste.

[Livinloud]

If you still get an issue it could be possible your AIO isn't working.

[ArmanM]

2 minutes ago, Livinloud said:

If you still get an issue it could be possible your AIO isn't working.

Is it less likely to be an issue with the CPU itself? My idle temps are normal, and in gaming loads my temps seem reasonable (low 70s at most in GTA V maxed out).

[Livinloud]

At what usage when playing gta v? Mine is around 54c..(I have a 9900k as well. But a custom waterloop with 360mm rad space total though.) Thinking of possibly upgrading my 120 to a 360.

[ArmanM]

2 minutes ago, Livinloud said:

At what usage when playing gta v? Mine is around 54c..(I have a 9900k as well. But a custom waterloop with 360mm rad space total though.) Thinking of possibly upgrading my 120 to a 360.

I'll have to get back to you tomorrow with that info. When I played GTAV my boost clock was at 4.7GHz in intel tuning util. It definitely seems like my temps in GTA are higher than normal. I still doubt that its a cooler seating issue though because I had a friend help me install it, and he has a lot of PC building experience.

[APasz]

It's simply a hot chip. Mine can get upto 120w tdp, which means a massive amount of heat.

I'd say a 360 rad is a minimum.

[Jurrunio]

VID is not an actual voltage ffs, you need to check Vcore or CPU core voltage reading

[ArmanM]

5 minutes ago, Jurrunio said:

VID is not an actual voltage ffs, you need to check Vcore or CPU core voltage reading

Sorry. CPU-Z shows 1.248V with the boost clock at 4.5Ghz while under a heavy load (95-100% utilization). It hits around 93C then throttles

[ArmanM]

The Tuning Util shows a Core Voltage of 1.144V though

 

[ArmanM]

14 minutes ago, APasz said:

It's simply a hot chip. Mine can get upto 120w tdp, which means a massive amount of heat.

I'd say a 360 rad is a minimum.

I get that it's a hot chip, but my performance seems significantly worse than what others have reported on the same hardware.

[Jurrunio]

Time for new paste (preferably more than what Corsair put on the base plate) application then.

[TheKDub]

1 hour ago, ArmanM said:

Will I have to clean off thermal paste, and then reapply it? Or is it fine to just remount without reapplying paste.

Yes. Always clean off the thermal paste and apply new paste when removing a cooler. If you don't, you'll trap air bubbles in the paste which will act like an insulator and greatly reduce cooling performance.

 

I personally use Noctua NT-H1 (https://amzn.to/2LyZwAt) It's non-electrically conductive and performs great.

[Simon771]

1 hour ago, APasz said:

It's simply a hot chip. Mine can get upto 120w tdp, which means a massive amount of heat.

I'd say a 360 rad is a minimum.

My i5 8600k at 5GHz is using just over 100W when at full load, and I can keep it under 80°C all the time with air cooler. 

360mm rad for i9 9900k being minimum is just madness. 

 

I suspect that he didn't mount is properly (it happens even to experienced builders), or it could be bad TIM between cpu and cooler. If CPU cooler wasn't working, temps wouldn't stop at 95°C, but it would go to 100°C and crash very soon after stress test was started. 

[Livinloud]

Also ambient temp matters as well too. Normally my room is 21c but when it started getting hot outside it would become 30c and when I stress test at 30c ambient I hit 90+ but at 21c I hit high 70s- low 80's. So depending on how hot your room is that is a factor as well. Also are you using your AIO as a intake or exhaust? I recommend intake over exhaust.

[Zberg]

Even if you got one of the hottest running chips, that cooler should be doing more work than that.  Would certainly remount, clean off old paste, reapply but have to wonder if that pump is working the way it is supposed to.  

[ArmanM]

I took off the heatsink and the thermal paste that came with the AIO was practically all dried up. It's strange because I built this rig just a few weeks ago. Anyway, after cleaning and reapplying thermal paste everything seems normal now.