Custom Loop in small case - temperatures

[Braveshock]

Hi,

 

I've just finished my first custom loop and have some questions regarding temperatures. Basically I decided to go with WC due to the noise reduction - I had enough of 1080ti fan  

As you can see on attached pictures I built the loop based on EK equipment and pretty small case which is Fractal Design Meshify C. I knew that he case is not big enough for more than one 360 radiator but I love the case so decided to go with it.

Could you take a look at the loop and see if there are opportunities to make it better in order to achieve lower temperatures? 

I know that one more radiator would help but there is a problem with capacity due to the small case.

CPU - i7 8700K (no OC)

GPU - EVGA SC2 1080Ti (no OC)

RAM - 32GB Corsair Vengeance

WC - EK blocks and 360mm slim radiator, D5 pump, Bitspower fittings

 

After a 30 min playing at PUBG my CPU temperature reached 79C. I knew that 360mm radiator might just fit to that equipment but thought temperature would be at least 10C lower.

CPU - 79 (max)

GPU -  58 (max)

I've attached also temperatures chart and speed chart of the pomp and Noctua Fans

Thanks for your help

 

[Nogghan]

i7 or i5? you out " i7 8600k"

[zombienerd]

What was the highest temp on the loop temp monitor?  

I'm just thinking based upon the GPU temp that you're just dealing with crappy Intel TIM, and need to de-lid that CPU.

[Braveshock]

4 minutes ago, Nogghan said:

i7 or i5? you out " i7 8600k"

my bad - i7 8700K

 

1 minute ago, zombienerd said:

What was the highest temp on the loop temp monitor?  

I'm just thinking based upon the GPU temp that you're just dealing with crappy Intel TIM, and need to de-lid that CPU.

54C was max what I saw

[zombienerd]

2 minutes ago, Braveshock said:

my bad - i7 8700K

 

54C was max what I saw

Your loop looks great.  That temp is very respectable.  Your high CPU temp is just the way Intel's run.  If you want it lower, you'll need to de-lid and use a better interface material, such as a better paste, or go liquid metal.  There are MANY videos on Linus' channel and others (if going elsewhere, I'd recommend GamersNexus) if you're curious on how to "Do it yourself", but there are services out there to do it for you.

[Braveshock]

3 minutes ago, zombienerd said:

Your loop looks great.  That temp is very respectable.  Your high CPU temp is just the way Intel's run.  If you want it lower, you'll need to de-lid and use a better interface material, such as a better paste, or go liquid metal.  There are MANY videos on Linus' channel and others (if going elsewhere, I'd recommend GamersNexus) if you're curious on how to "Do it yourself", but there are services out there to do it for you.

Great. Thanks for the update. I have to check what is behind de-liding

I used AC5 between CPU and block but looks there is more better solutions

 

One thing what I noticed is my pump speed. I'm using AI Suite 3 from Asus but sometimes my pump doesn't change the speed based on the temperature CPU achieved. IS there any better program to control speed? 

[zombienerd]

2 minutes ago, Braveshock said:

Great. Thanks for the update. I have to check what is behind de-liding

I used AC5 between CPU and block but looks there is more better solutions

 

One thing what I noticed is my pump speed. I'm using AI Suite 3 from Asus but sometimes my pump doesn't change the speed based on the temperature CPU achieved. IS there any better program to control speed? 

I am not sure of any better fan control software, I use my BIOS to set up the fan curves, including the waterpump header.  (I use an AIO in my system currently)

[Braveshock]

9 minutes ago, zombienerd said:

I am not sure of any better fan control software, I use my BIOS to set up the fan curves, including the waterpump header.  (I use an AIO in my system currently)

Thanks. I've never heard that until now  

Once you do delidding do you have to repeat that from time to time or it's permanent and no maintenance needed?

[zombienerd]

Just now, Braveshock said:

Thanks. I've never heard that until now  

Once you do delidding do you have to repeat that from time to time or it's permanent and no maintenance needed?

Really depends on what TIM (thermal interface material) you use.  Some are good for 2-3 years, some should get changed yearly.

[Nogghan]

13 minutes ago, Braveshock said:

Thanks. I've never heard that until now  

Once you do delidding do you have to repeat that from time to time or it's permanent and no maintenance needed?

i redid my 8600k after 8 months and i didnt even need to it was still liquidy just like the day i applied it, so i woulnt worry about it until you start seeing temp declines which could be years down the line and even then just add a little more or clean off and re apply 

[Neo-revo]

1 hour ago, Braveshock said:

One thing what I noticed is my pump speed. I'm using AI Suite 3 from Asus but sometimes my pump doesn't change the speed based on the temperature CPU achieved. IS there any better program to control speed? 

Looks like a D5,   I have no exp with using the PWM enabled pumps, but as i heard one person say, and it makes lots of sense to me, that  running you pump at an alternate speed is just a preference thing.  and  with a loop as small as yours and a pump as powerful as a single D5,  the rotation of 1500L per hour, 25 L/min and so on and  an assumed fluid volume of 1000ml (1L)   you  would rotate the entire volume of water 1500 times at max. in one hour and  lowering the pump speed will just reduce this number,  and so  where it is that some system simply aiming for silence may reduce the pump speed and set a curve incase of high use.

 

But as a gamer, i would recommend just using 100%, for maximum over kill, i cool dual 290X and 9590 with a 480 and 420mm rad,  i could in theory probably be fine with teh fans at non-existant.  but  then i couldn't get idles like this

[For Science!]

9 hours ago, Braveshock said:

Hi,

Your temperatures are similar to my Ncase M1 build also with a 8700K + 1080 Ti cooled by 360 mm worth of radiator space (75 on CPU, 54 on GPU using RealBench Stress Test). Given the performance of the EK slim radiator vs my HWlabs GTS radiator, I think the differences are accounted for. Having said that the Meshify C should perform much better than the Ncase M1 so I think you still have some room for improvements.

 

I also have a Meshify C custom loop, that is slightly more complicated than yours, but I can say that at least for my system, having the radiators exhaust heat, even through the front reduced my water temperatures by close to 10 degrees or so under load. This is presumably because of the compact nature of the C-series, and the heat just re-heats the components before it has a chance to escape (From the top, in your case).

 

As for the pump speed, choose an RPM that doesn't bother your ears and leave it at that. There is very little rationale to vary the pump speed with temperature. As long as the fans are controlled by the fluid temperature, that is the only thing that needs to be controlled as far as I am concerned.

[Braveshock]

On 10/15/2018 at 11:50 PM, zombienerd said:

Really depends on what TIM (thermal interface material) you use.  Some are good for 2-3 years, some should get changed yearly.

Hi,

 

I just made some small changes in my watercooling. I added 240mm radiator with two slim fans. I changed the thermal paste to grizzly liquid metal. I also fixed core voltage to 1.1V

Max speed of:

 - Pump - 48% (above 70 degrees)

 - Fans - 65% (above 70 degrees)

I prefer silence so that's the reason I don't want to go higher with speed of each component. Maybe in the future if OC needed I will do that.

 

Below you'll find results from 2h of gaming (Call of Duty black ops) 

Of course temperatures during gaming are more higher than during only stressing CPU. I used Prime for 45 min and max temperature on CPU was 65 degrees.