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Custom loop issue

Vinnige Fanie

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Hey guys,

Firstly huuuuge thanks to @G3t Wr3k3d and @Randomsheep for helping me with my custom loop.

I'm getting a weird issue and I thought Id ask here for some input and ideas....

Firstly the loop specs:
EKWB D5 PWM pump with EKWB 250 Res
Bykski Gpu block
Alphacool Cpu block
Parallel setup
Bykski Flow meter
EKWB 360 Rad with 3X 120LL fans
Thermal Grizzly kryonaut paste


The gpu is running a tad hot, It will go to about 71c under load and as soon as you take the load off the gpu it jumps back to the temp of the water within a second. I was thinking it could possible be a paste or spread issue but we double checked it and everything seems fine.

At first we thought it might be the Flow meter so we removed that and it dropped a little bit on temps but nothing major.
Secondly we tried going back to series for the cpu and gpu which also didn't change much, The temps did creep up slightly slower but we arrived at the same 71c after 10 mins or so.

Any advise or help would be greatly appreciated.
 
Stupid question.
Your parallel setup that you speak of, thats the gpu on its own tubing into the rad, and cpu tubing on its own into the rad?
 
Stupid question.
Your parallel setup that you speak of, thats the gpu on its own tubing into the rad, and cpu tubing on its own into the rad?

7b3f80a5b526d6eef709383356b1517d.jpg

That's the setup


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Hmmm...well first off shit thats porn to my eyes.
Well i havent touched WC loops in a while but my paranoia sets in with the paste, or the surface it has covered, sounds like an air pocket is forming on one of the component to heatspreader points.
The tendency of your system amping up on degrees and dropping almost immediately shows that sign.

Don't think it has something to so with the parallel setup compared to serie setup, parallel will simply have better heat dissipation.
If it wouldve been serie i couldve suggested put your gpu infront of cpu in the loop and minimise the distance the liquid has to travel to the rad.
 
You can try the series setup again, but have the GPU first and cpu second, this will have the liquid at cooled temp hitting the gpu then only the cpu then back to rad. If its better like that and less warm i would think its not sending enough coolant (in parallel setup)into the components so tubing increase is immenant and maybe stronger pump. Res should be fine.
 
saw one of Jayz latest videos where EK actually sent him wrong thickness pads for the GPU

was this your own purchased block, or was it bought used?

I know it will make a big difference, aesthetically, if you run a series loop, but to me, if you do a parallel loop it is as if you are essentially half'ing the flow of the loop by trying to fill both components simultaneously

ofc I may be sucking this out of my thumb, but just as an example when I connected my AIO pump to mobo header and installed the iCue software, I noticed my temps sitting quite high for a while

I then checked and noticed that the software had set my pump to QUIET, meaning it halved the pump speed

changed that back to BALANCED and pump speed to full and temps dropped about 5degs (yes ok that doesn't sound the most significant)

also considering when you removed the flow meter (note I don't think it's the most flow restricting part anyway), you did notice a change already

also, checked the speed of pump via header?
 
saw one of Jayz latest videos where EK actually sent him wrong thickness pads for the GPU

was this your own purchased block, or was it bought used?

I know it will make a big difference, aesthetically, if you run a series loop, but to me, if you do a parallel loop it is as if you are essentially half'ing the flow of the loop by trying to fill both components simultaneously

ofc I may be sucking this out of my thumb, but just as an example when I connected my AIO pump to mobo header and installed the iCue software, I noticed my temps sitting quite high for a while

I then checked and noticed that the software had set my pump to QUIET, meaning it halved the pump speed

changed that back to BALANCED and pump speed to full and temps dropped about 5degs (yes ok that doesn't sound the most significant)

also considering when you removed the flow meter (note I don't think it's the most flow restricting part anyway), you did notice a change already

also, checked the speed of pump via header?

Serie vs parallel changed nothing, And new block so used the pads supplied.


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Had a similar issue on gpu temps on a 1070ti that I cooked because I had the pads on the wrong place.
1. Make sure you got the correct thickness pads (and that they are making proper contact)
2. Make sure the pads are placed on the correct things, else you could be watching a youtube video and next thing the pc locks up and gpu just dies.
 
I would try put the loop in series , as a test bridge the top GPU outlets and see if it makes a difference.

What is your water temp out of interest ?
 
Hey guys,

Firstly huuuuge thanks to @G3t Wr3k3d and @Randomsheep for helping me with my custom loop.

I'm getting a weird issue and I thought Id ask here for some input and ideas....

Firstly the loop specs:
EKWB D5 PWM pump with EKWB 250 Res
Bykski Gpu block
Alphacool Cpu block
Parallel setup
Bykski Flow meter
EKWB 360 Rad with 3X 120LL fans
Thermal Grizzly kryonaut paste


The gpu is running a tad hot, It will go to about 71c under load and as soon as you take the load off the gpu it jumps back to the temp of the water within a second. I was thinking it could possible be a paste or spread issue but we double checked it and everything seems fine.

At first we thought it might be the Flow meter so we removed that and it dropped a little bit on temps but nothing major.
Secondly we tried going back to series for the cpu and gpu which also didn't change much, The temps did creep up slightly slower but we arrived at the same 71c after 10 mins or so.

Any advise or help would be greatly appreciated.
Pic of the loop configuration & thermal delta possibly?
 
What type of fittings are on the GPU waterblock ports?
From an untrained eye, it seems like some kind of G1/4 3 way port, in which case it seems like the GPU waterblock is mostly bypassed
 
Guys as mentioned the loop was redone is serie with soft tube and nothing changed. Not the parallel setup causing my issue.


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Just my experience...because I did not know that you should flush your radiator before use...my new rad had a whole lot of gunky stuff that blocked my fins in the cpu block...have a very close look at the fins for any buildup. I had to drain my loop twice to get the junk out...but made a 8 degree difference overall.
 
Just my experience...because I did not know that you should flush your radiator before use...my new rad had a whole lot of gunky stuff that blocked my fins in the cpu block...have a very close look at the fins for any buildup. I had to drain my loop twice to get the junk out...but made a 8 degree difference overall.

Thanks bud, We drained the loop about 6 times between all the struggles.

Anyone know what thickness the thermal pads should be?


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