Z390 i7-9700k Seriously High Temps

Matt1024

Matt1024

Matt1024

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10 Dec 2018
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8
Hi all

First post but long time PC gamer/builder.

Just upgraded from 3770k to 9700K on an Asus TUF Z390 Pro Gaming board.
Case is a BeQuiet Dark Base Pro 900 (huge) and cooling is a new Corsair H105 (240) AIO in push/pull.
Corsair Vengance 3200 DDR4 ram 32GB. (4x8gb)

For whatever reason I'm unable to get the temps down. Idle is fine as in ambient is 25 and the CPU package is 29-32.
As soon as any load is on the CPU, ie Prime95, Cinebench etc it wacks up to 90+. This is with the fans on full speed (manual control :) and reapplied MX4 paste. Thermal Throttling occurs and this is at stock speeds! Not even started to try overclocking. Even just light gaming it's hitting 80+
Voltage I've tried Auto, adaptive 1.3 and offset -.09 etc.. with LLC3-6.

I've got direct Molex power to the pump, though I have tried the AIO header on the board too.
The cooler is fitting fine. I've tried the stock paste on the H105, MX4 and IC Graphite Pads. Same results with all of them.

Fans in the case are 3 x 140 intake (2 front 1 under) 4x120 in push / pull on the AIO. (top mounted) and 1 x 120 rear by the gfx. (case is inverted so GPU is above the CPU)

Gfx is a 1070ti Zotac Mini so it can dump heat in the case, though Prime doesn't hit the GPU in these tests.
(I have an H75 and G12 to watercool the gfx soon anyway)

I've disabled the Asus Multicore Enhancement, played around with the core voltage with offsets etc, LLC's and tried even underclocking it to 4.4 turbo, but it still craps out with temps. I've also tried swapping out the RAM and running just 16gb with the same results.

I'm at a loss as to where the problem is. I've updated the BIOS, loaded defaults, turned off turbo etc and still the temps are crazy high. I've read that these chips should be happy enough @ 4.9 on all cores or even 5.0+ with pretty much the same cooling (240) that I have.

Unsure if it's a bad CPU / Solder TIM, crap motherboard or a dodgy cooler.

Will try fitting my H75 on it tomorrow but being smaller I'm not expecting any improvement.

Just wondered if anyone had any other thoughts on this situation before I scream and send all the parts back for RMA.

Thanks in advance
 
Thanks for replying.

Rad is an exhaust at the top. Radiator gets only slightly warm only at the point where the intake pipe meets the radiator. Its brand new so I'd hope it's not the aio that's dead. Touching the side of the rad it doesn't feel hot at all.

When I had it on the aio header on the board it showed 1800 rpm for the pump.

Forgot to mention when running prime even though the temps are within ''limits" it'll hard lock the pc after a few minutes.

So many parts from different suppliers it's a nightmare to troubleshoot.
 
Should have said this is with the case side and top off. It's open so temps should be lower.

I'm gonna install the H75 tonight as it's the same mb mounting so should be simple to change. what a mare!
 
I've heard these new boards can be thinner than previous boards, and as such the CPU mounting doesn't get enough pressure on the IHS.

When installing the riser posts there was some play to the board, however screwing down the pump it seemed snug as a bug in a rug.

I've picked out some rubber washers to pad out the rear plate of the cooler and will try that tonight also.

You'd think by this day and age things would be easier....
 
Right - evening all.
So I got the food shopping over and done with the Missus, so I can tinker on the system now.
Before ripping out the aio, i've set the VCCIO and VCCSA to 1.05, and the CPU to 1.2.
At stock speeds (46x) all is fine. Running prime gives 55c and using small fft's gives 65c.

Bumping up to 47x with a 1.23 cpu and 1.07 on the vccio/vccsa i'm getting 58 in prime and 70 on the small fft's.
Had a few sudden shutdowns and resets at 1.2v until I bumped to 1.23. . It's been running prime for 50 mins and still at 70c.

Will try again shortly at 48x.. Should get somewhere near 50x with temps below 80c I hope..
So the solution certainly was the cpu core voltage and the vccio/vccsa.
(though strangely the radiator still feels cold on the sides!)

Will update the results soon. Thanks for all your input and advice.. these new BIOS' are a bit of a minefield to setup...
 
ok. Multiplyer set at 48 (so 4.8ghz on all 8 cores) Voltage @ 1.26 and the VCCio and VCCSA now at 1.09.
It'll run prime blend all day at 60c, but when using small fft's it gets to 75c then just freezes after about 10 minutes.
Have to manually reboot.
Think I've either got a lemon of a chip or the board is duff. The temps seem to be okay though I'll try the shims under the cpu bracket tomorrow now.
Maybe I should RMA the board and the CPU and get a slightly better board.
(psu is 1000w coolermaster so it's not the psu at fault)

Annoyingly there's no guides online for Asus BIOS for a 9700k to compare / copy the settings for a 5ghz oc.

unless anyone here has a similar setup? ;-)
 
As the OP.. here goes
After playing COD MW recently, my temps were peaking again and I got fed up.
1070ti on a 120 aio (custom bodge mount ;-) and the 9700k on a 240 aio oc'd to 4.8
GPU was hitting 75 and the CPU was hovering at 70 odd..

So I removed all the cooling and fans, cleaned out, and discovered my MOLEX TO 3 PIN PUMP POWER was 5v (red) not 12v (yellow)
FFS
So as I was using a fan splitter, it was limiting the pump speed for both the GPU and CPU aio's.
I've tried using the AIO header on the board and didnt find it helped much (the speed kept changing) and I like my pumps to stay at 100%.

Now it's using 12v, reseated both aio's with some new Noctua fans and it's running like an absolute dream.
Also I HIGHLY recommend using Argus Monitor for Fan control (30 day free trial) and it's only £7 for 2 computer license. (no i'm not an employee just loving it!)
I'm using mobo headers to run the fans on the GPU aio so Argus allows me to monitor the gpu temp for those fans, stuff like that.

Now Prime95 hits max 72 on smallffts, 62 on mixed.
GPU maxes out at 55 in MW.. and it's super super silent.

So much happier.. yay!

Merry Christmas All!
 
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