Help with build Problems

[MrPapaBear1984]

-ASUS TUF Z370-Plus Gaming

-CORSAIR iCUE H115i RGB ELITE Liquid CPU Cooler, top mounted as air out

- case Corsair 4000D Airflow 

- Corsair Elite AF120 fans 1 Airintake front,1 Air outtag back

- case came with 2 fans(120) that I used in front as airintake

 

- Intel Core i9 9th Gen - Core i9-9900KF 

 

So everything is running but I need some help, with Bios settings, first I want to insure that the cpu runs without oc. I think it does but unsure because in Windows it showes running with 5Ghz. My problem is that if I use intel xtu to see temperature and load and then run a stress test, the temps are really high. CPU goes from 35C to around 90c no throttle shows there, so that’s good but still feels like a high temp. What concerns me is the vr thermal throttling that occurs about 1-2 min into the test. Did I oversee anything in the Bios or is this just a 370 board problem? 

Been 10 years that I really was into pc building so need to refresh my knowledge and maybe someone her knows how to better set this up.

 

 

[RONOTHAN##]

5 minutes ago, MrPapaBear1984 said:

CPU goes from 35C to around 90c no throttle shows there, so that’s good but still feels like a high temp.

It's high, but by 9900K terms not that high. I wouldn't really worry about it. 

 

5 minutes ago, MrPapaBear1984 said:

What concerns me is the vr thermal throttling that occurs about 1-2 min into the test. Did I oversee anything in the Bios or is this just a 370 board problem? 

This is a problem, but it's a problem with the motherboard. 9900Ks draws quite a bit of power, so at full load the motherboard VRM will be pushing quite a lot of current. Most mid to lower end motherboards like the TUF Z370 aren't really designed to handle that amount of current, so they will run very hot and have to rely on throttling the CPU to prevent it from dying. That sounds like what's happening here. 

 

Pointing a fan directly at the VRM should help as direct airflow helps quite a bit with temps. 

[MrPapaBear1984]

That’s what I thought, so a cheap motherboard replacement should fix this problem. Guess I put this on my to do list any recommendations, in the lower price range. Because this is not the newest pc? 

[Fasauceome]

13 minutes ago, MrPapaBear1984 said:

I want to insure that the cpu runs without oc. I think it does but unsure because in Windows it showes running with 5Ghz

The i9-9900KF will natively turbo to 5GHz without an overclock, it's the default setting. 

 

16 minutes ago, MrPapaBear1984 said:

CORSAIR iCUE H115i RGB ELITE Liquid CPU Cooler, top mounted as air out

In the BIOS have you increased the fan speed or pump speed of the cooler? The 9900KF is a pretty hot CPU by itself. You might also try an adjustment to the CPU voltage to control the temps better.

[RONOTHAN##]

1 minute ago, MrPapaBear1984 said:

any recommendations, in the lower price range. Because this is not the newest pc? 

It's not really worth swapping the motherboard unless you find a good one at a good price. LGA 1151 boards have been out of production for a few years now, so the only options you'll find are either new-old stock at egregious prices or used boards that also are going for way more than they really should be. Occasionally you'll find a good board for a good price, but most of the good ones are going to be expensive enough that it makes more sense to just flip your current combo and buy a 12400F combo instead. 

 

Try a fan first, it's much cheaper and will help quite a bit.