Overly hot 9700k

Blueyoshi03 · 6 Dec 2019 at 04:08

I've recently bought a 9700k and have for the first time started overclocking and i'm running into extreme temperatures and I cannot figure out why. I had a budget 240mm aio which i've just replaced with a 360mm Arctic Freezer II and i'm still getting bad thermals under stress test, maybe worse somehow?!

My overclock is 4.8ghz, 2 AVX offset, 1.325v, LLC level 6, and my motherboard is a Z370-F.

Idle temps are 28-30c which sounds good, but even opening chrome will spike to 60c no problem. In fact when I first boot up and check Core Temp it shows 50-60c max just loading windows stuff, and on smallest prime 95 I hit 98c on some cores in under 10mins and I'm scared to run it any longer...

I want to lower my LLC or vcore, but my vdroop is awful. Getting 1.296v load voltage on 1.325v vcore so i'm worried to lower it due to instability (according to CPU-Z).

Cinebench R15 maxed out at 74c though. So what could my issue be since I saw people reporting 67c load temps on 9900ks with this cooler.

Please help

scubes · 6 Dec 2019 at 10:05

my 9700k binned is 5.1 idle temps are in the 30s highest ive seen it hit gaming is 70 this is a 8 pack bundle .

wazza300 · 6 Dec 2019 at 22:52

Tried more llc and less vcore? To try and get it closer to constant 1.296v

Also what brand of paste you using?

MaXxBoulton · 7 Dec 2019 at 12:21

Blueyoshi03 said:
I've recently bought a 9700k and have for the first time started overclocking and i'm running into extreme temperatures and I cannot figure out why. I had a budget 240mm aio which i've just replaced with a 360mm Arctic Freezer II and i'm still getting bad thermals under stress test, maybe worse somehow?!

What case do you have, do you have the AIO pump running at full speed

Blueyoshi03 said:
Idle temps are 28-30c which sounds good, but even opening chrome will spike to 60c no problem. In fact when I first boot up and check Core Temp it shows 50-60c max just loading windows stuff

When you first start a pc it will run at full turbo speeds until windows is loaded, my system idea's at 30c but hit 48c in bios because the system is at full turbo speed. that explains your windows loading temps

Blueyoshi03 said:
smallest prime 95 I hit 98c on some cores in under 10mins

yep that's about right, this is also why people dont use prime anymore, the test is total crap. and it doesn't even show if a system is stable - i like AIDA64 and ASUS Rels bench

Blueyoshi03 said:
I want to lower my LLC or vcore, but my vdroop is awful. Getting 1.296v load voltage on 1.325v vcore so i'm worried to lower it due to instability (according to CPU-Z).

have you set LLC too high and you think its Vdrop when intact its an LLC spike. you dont just set LLC to max you need to find the one that your CPU needs thats why it go's in levels and not just on/off

scubes said:
my 9700k binned is 5.1 idle temps are in the 30s highest ive seen it hit gaming is 70 this is a 8 pack bundle .

Under what load?

Blueyoshi03 · 7 Dec 2019 at 15:39

So I think part of the problem might be the pump (absolutely brand new 360mm aio) but the radiator always stays cold. I can hear the pump doing stuff and I am currently running the aio with the radiator outside the case and moving it around to release air bubbles but temps stay the same. It's an Arctic Freezer II so theres a single 4 pin cable that's supposed to go into the cpu fan header.

I've got a spliter in the fan header that the aio is plugged into and my cpu fan hub is plugged into as well, in the bios I've gone to the monitoring section and selected aio pump to dc mode, but even when I'm doing a prime blend test and I get to 95c+ the radiator still is cold. Ignoring and overclocking stuff I think somethings wrong here with the cooling since my weak sauce 240mm would achieve better temps... I thought it's the mounting pressure but I've recounted with kryonaught twice and I'm scared to tighten the screws any harder at this point. But the bottom line is my radiator doesn't heat up

Blueyoshi03 · 7 Dec 2019 at 16:24

2 intel burn standard stress tests got me to a peak of 91c but stayed in ok temps, so the pump cant be dead but the rad stays cold no matter what. I could try recounting a 3rd time but I really cant see why I cant get good contact

doyll · 7 Dec 2019 at 16:53

Definitely sounds like either airlock / blockage in line or bad pump. Is this a new CLC?

Blueyoshi03 · 7 Dec 2019 at 16:56

Brand spanking new. But within the past hour while the system was on I unmounted the radiator and moved it around, and at some point the pump was making a kind of crunchy sound then eventually went silent (presume air bubbles) but the temps never changed. So considering its not getting severely bad temps and the pump sometimes makes noise, i don't think its dead, but as i say no heat in rad and it has been given good reviews so i dunno. What should I try beyond another remount of the block?

MaXxBoulton · 7 Dec 2019 at 16:58

Blueyoshi03 said:
I've got a spliter in the fan header that the aio is plugged into and my cpu fan hub is plugged into as well,

NO!, plug the pump into a system fan header on the motherboard and set it in bios to run at 100%

Prime and intel BURN test are always going to get hot, that what they do. they put a silly unrealistic load on the CPU to test for fails.
when you not running tests all day what do you plan to do with the system

Blueyoshi03 · 7 Dec 2019 at 17:02

I tried plugging the cooler into an AIO pump header that I have on my board but on the bios it immediately was climbing temp, I also get the same results whether i have the AIO plugged directly into the cpu fan header, or plugged into the splitter. But if I plugged the AIO into the cpu header, where do I plug my cpu fan hub that controls the rest of my fans?

MaXxBoulton · 7 Dec 2019 at 17:04

Blueyoshi03 said:
I tried plugging the cooler into an AIO pump header that I have on my board but on the bios it immediately was climbing temp, I also get the same results whether i have the AIO plugged directly into the cpu fan header, or plugged into the splitter. But if I plugged the AIO into the cpu header, where do I plug my cpu fan hub that controls the rest of my fans?

the pump needs to be running at 100%, the fan headers you used in bios will be set lower down.
go into bios and set a fan header at 100% then plug the pump into that herder

you still need to just used the system, do you game? play for a few hours and see what temps you see. do you have the fans on the rad set to low speed

Blueyoshi03 · 7 Dec 2019 at 17:06

This cooler has 3 fans, 1 VRM fan and the pump all connected to 1 4 pin connector so If I set that to 100%, the fans will also be on 100%. I thought settings the AIO_PUMP to DC mode in the bios under monitor would give me 100% pump and separately allow me to control the fans on the curve?

MaXxBoulton · 7 Dec 2019 at 17:15

Blueyoshi03 said:
This cooler has 3 fans, 1 VRM fan and the pump all connected to 1 4 pin connector so If I set that to 100%, the fans will also be on 100%. I thought settings the AIO_PUMP to DC mode in the bios under monitor would give me 100% pump and separately allow me to control the fans on the curve?

with the cooler is it possible to unplug the pump and run it to its own header.
if not set it all to 100% and test to see if the temps fall, if you have a bad pump even at 100% on the fans you will still hit high temps

Blueyoshi03 · 7 Dec 2019 at 17:20

I'll see what happens if I set the whole system to 100%, although this happens anyway during high temp stress tests, and as I mentioned even with permanent temps above 80c on all 8 cores I cannot feel any warmth whatsoever on the radiator.

To reiterate i'm not concerned with 90c+ in prime-95 as I'm seeing 74c peaks on cinebench r15 which isn't terrible, however the radiator never heats at all.

MaXxBoulton · 7 Dec 2019 at 17:29

am going to go out on one here... i have not see this for a lot time but it dose happen. (i did it haha)
did you remove the plastic film off the CPU block.

i just watched a VID on this cooler and noticed it had a cover on that you need to peal off

Blueyoshi03 · 7 Dec 2019 at 17:30

I've definitely removed it, I even IPA'd the block in case there was some glue residue

MaXxBoulton · 7 Dec 2019 at 17:33

Blueyoshi03 said:
I've definitely removed it, I even IPA'd the block in case there was some glue residue

it could just be a poo cooler, OCuk have it at £79 for a 360mm AIO that dam cheap.
a REAL good AIO cooler cost more and performance no better than a good air cooler

also dont forget the 9700k is a hot chip

also a now see what you mean about it all running off one cable, if there is no software to control things like the pump and fans i think having everything been controlled by one input is a bit silly and not going to work very well as we see here

Blueyoshi03 · 7 Dec 2019 at 17:40

So no matter how cheap it is people have got good temps off it, but no matter how bad or good it is, the radiator should be getting hot, or at the bare minimum warm. When I say its cool its actually cold metal. Just set everything to 100% dc mode and temps are the exact same

Blueyoshi03 · 7 Dec 2019 at 17:44

I also was previously using a 240mm mastercooler top mounted with push fans that weren't even static pressure beating these temps. That cooler cost me £40, this has a nearly twice the radiator density, 3x the fans and maybe twice the tube diameter, just based off physical differences it should be performing better than that cheap 240mm and be getting warm. Somethings clearly wrong >.<

MaXxBoulton · 7 Dec 2019 at 17:44

if it was all at 100% and temps are poo it could be a pump problem.

what are your plans for the system? Game?
use the PC under normal loads and see how temps get on