PC Build Temperature assistance.

S

SYNERGY

Executive Member
Joined
Jul 13, 2007
Messages
6,050
Reaction score
331
Location
Durban
Hi All

TLDR: New PC build. 8700k,1080ti CPU Cooler: NZXT Kraken Cooler, Case: Phanteks P400S. GPU Hits 81*. Radiator mounted upfront.


So, I finally bit the bullet and upgraded my CPU after 5 years.

I went with the following build:

CPU: Intel Core i7-8700K 3.7GHz Hex Core 14nm Coffee Lake Socket
MB: Gigabyte Z370 AORUS Gaming 5 Intel Z370 Coffee Lake ATX Desktop Motherboard
GPU: Gigabyte Aorus 1080ti Extreme Edition
Cooler: NZXT RL-KRX62-02 Kraken X62 280mm All-In-One Liquid CPU Cooler
Ram: G.Skill F4-3200C16D-16GTZR TridentZ RGB Series 32GB (4x8GB) 3200MHz DDR4 CL16 1.35V Desktop Memory
SSD: Samsung 960 EVO 500GB NVMe M.2 PCI-Express 3.0 x4 Solid State Drive
Chassis: Phanteks Eclipse P400S Silent-Edition Tempered Glass Black & White Special Edition

Images of my layout (not my pics): 192142.605738b60fd45fe134ad5864f088d705.1600.jpg, 192142.ec86def3ad612045b2aadac680b56dac.1600.jpg

Kraken is mounted with 2 x 140mm push fans, and 2 x 140mm pull fans in the front.
I have a 120mm exhaust fan in the back, and 2 x 140mm intake fans on the top.

CPU temperatures are fine.
GPU overheats to 81*

Without the side & front panel, the gpu temperature drops by 10*-15*.

Pawning off the case to a family member. What case would you recommend? Something with good airflow, but that is still RGB-ish/pretty.

So a good High Air Flow case.

Looking at mounting the radiator on top, or even in the back/outside somehow.
Any and all recommendations & advice would be appreciated.

Thanks
 
Last edited:
What happens if you turn the top fans & psu around so they exhaust instead?
 
What is your budget?

I would suggest the CM Mastercase H500p, it is a beautiful case and you can take the front perspex off for high air flow but it is not cheap.
 
Just saying, but that case is fine and has great airflow, I've built dual-gpu systems in that without issue.

Your fan positions are... quite possibly the worst you can have.


water cooler in the front is the worst idea imaginable (especially with the radiator fighting gravity (if your tubes are at the top)) all you're doing here is pre-heating the air that gets to the GPU via the front water cooler, and then keeping the hot air in the case by having the fans at the top as intake(!), no wonder your temperatures go down when the side panel is off, it's the only way hot air can get out.

what to do:

Place water cooler on top of case, fans pointing OUT.
Place two fans in front of case, airflow IN.
back fan is airflow OUT.

Problem solved. :)
 
Last edited:
This is the usual layout for fans on cases.

uFe0SH7.jpg

I would agree with Faux-Grey. Or keep the radiator in front sucking in and turn the top fans to exhaust.

See what temps you get between those configs.
 
Last edited:
Liquid radiators must ALWAYS BLOW AIR OUT! Never have radiators blow air in.

I have the same CPU, same case, same cooler and Strix 1060 OC, and my GPU never hits above 60C, and my CPU hits 70C max under load OC'd to 5GHz.

Remove the two air filters on the front removable facade, as the air will be blowing out and restricts airflow less.

Change your two top fans to intakes, and your radiator to exhaust. I guarantee you that will drastically reduce your temps.
 
Last edited:
Case is already in a new home. I do wish the last 3 posters posted a bit earlier.

I tried to mount on top, unfortunately I can't on the P400s.

I can on the H500p mesh.
Waiting for it to be released.
 
Faux_Grey said:
water cooler in the front is the worst idea imaginable (especially with the radiator fighting gravity (if your tubes are at the top))
Click to expand...

Not true. in a closed loop system, Pascals laws are in play - so gravity has no bearing on the water coolers performance what-so-ever.

The typical placements for radiators is the top or front - both as exhausts. It does not matter which orientation you choose, as long as you have cool air coming in, and hot air blowing out.

EDIT:

In this test, front mounted actually performs better and that it due to airflow, and not the water cooling system;

[video=youtube;xNAMxZgvves]https://www.youtube.com/watch?v=xNAMxZgvves[/video]
 
SYNERGY said:
Case is already in a new home. I do wish the last 3 posters posted a bit earlier.

I tried to mount on top, unfortunately I can't on the P400s.

I can on the H500p mesh.
Waiting for it to be released.
Click to expand...

I have the P400s with the X62 on my i8700k, radiator front mounted, and it performs flawlessly. Overclocked loads at 5GHz hover at 70c, and stock speeds under load hover around 55c.

This is my setup;

attachment.php


I have cool air blowing in from the top, and hot air through the radiator in the front.

As I mentioned earlier, remove the two dust filters in the front removable facade to aid exhaust, as those dust filters are only needed for intake.
 
Faux_Grey said:
Just saying, but that case is fine and has great airflow, I've built dual-gpu systems in that without issue.

Your fan positions are... quite possibly the worst you can have.


water cooler in the front is the worst idea imaginable (especially with the radiator fighting gravity (if your tubes are at the top)) all you're doing here is pre-heating the air that gets to the GPU via the front water cooler, and then keeping the hot air in the case by having the fans at the top as intake(!), no wonder your temperatures go down when the side panel is off, it's the only way hot air can get out.

what to do:

Place water cooler on top of case, fans pointing OUT.
Place two fans in front of case, airflow IN.
back fan is airflow OUT.

Problem solved. :)
Click to expand...

I have to disagree. The pump isn't doing much more work. Besides, if the pump can provide the flow, it doesn't matter. You shouldn't top mount a rad, because you'll be using hotter, exhaust air to cool the CPU. The GPU's TDP is higher than the CPU's, so the liquid cooler's performance is going to suffer.

You might think that the GPU should get cooler air than the AIO radiator, because the GPU has a lot more heat to dissipate, but because of the shear volume of air that gets pushed through the radiator, the air's delta T across the radiator isn't large. Q=mCdT
 
Hey Genetic, I have the same case, sent you a PM if you can take a look.

genetic said:
I have the P400s with the X62 on my i8700k, radiator front mounted, and it performs flawlessly. Overclocked loads at 5GHz hover at 70c, and stock speeds under load hover around 55c.

This is my setup;

attachment.php


I have cool air blowing in from the top, and hot air through the radiator in the front.

As I mentioned earlier, remove the two dust filters in the front removable facade to aid exhaust, as those dust filters are only needed for intake.
Click to expand...
 
ponder said:
Why cant you simply post here so all can learn? That's how forums work...
Click to expand...

My current setup is Phanteks P400S Case:

- Factory Exhaust fan at the back 120MM
- No fans at the top yet, closed with the covers
- Front 240MM Radiator pulling in
- Front 2 x dust covers in the panel attached
- CPU Idle 34, Gaming 69
- GPU Idle 40, Gaming 79

My thinking is add 2 x 140MM fans up top blowing in
Reverse front radiator to blow out
Remove 2 front dust filters to help airflow
Not sure about exhaust fan at the back?
 
LinuxMan said:
My current setup is Phanteks P400S Case:

- Factory Exhaust fan at the back 120MM
- No fans at the top yet, closed with the covers
- Front 240MM Radiator pulling in
- Front 2 x dust covers in the panel attached
- CPU Idle 34, Gaming 69
- GPU Idle 40, Gaming 79

My thinking is add 2 x 140MM fans up top blowing in
Reverse front radiator to blow out
Remove 2 front dust filters to help airflow
Not sure about exhaust fan at the back?
Click to expand...

Temps seem all right, what Gpu, Cpu and cooler are you running?
 
You must log in or register to reply here.
Back
Top
Sign up to the MyBroadband newsletter
X