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Discussion Starter #1
I don't get it, i have a custom loop with:
- Push/Pull 280 5cm thicc rad
- Push 360 3cm thicc rad
- Pull 240 3cm thicc rad
- Fans 100% ~2500rpm

Idle temps:
- CPU 40-60c
- GPU 35c

Nothing is overclocked by me, only the GPU boosts to 2000 by default.
Under full load, the GPU hits about 50c and the CPU hits 70-80c
CPU: delid/relid 7700k
GPU: 1080Ti FTW3

Ambient temp is about 25c..
 

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Did you bleed the system correctly? Do you know the water temps?
 

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Discussion Starter #3
Did you bleed the system correctly? Do you know the water temps?
Yep, there is no air in the system expect for a very tiny bubble in the GPU block which does not affect it.
Earlier this year, the temps were just fine with more air bubbles than i have now (1 right now).

I do not know the water temps, but the rads spill out a massive amount of heat when the fans are only running at 30%. Now, with 100% fanspeed it's still a bit hot but not as hot as before.
 

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Yep, there is no air in the system expect for a very tiny bubble in the GPU block which does not affect it.
Earlier this year, the temps were just fine with more air bubbles than i have now (1 right now).

I do not know the water temps, but the rads spill out a massive amount of heat when the fans are only running at 30%. Now, with 100% fanspeed it's still a bit hot but not as hot as before.
What changed on your system since earlier this year ?
 

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Discussion Starter #5
What changed on your system since earlier this year ?
- I've modded my case to fit the 360 in front, instead of a 280.
- Also added the 240 at the bottom.
- I replaced the thermal paste on both CPU and GPU with GC Extreme (was the standard EKWB paste before).
- Also changed the pump/res combo with a larger resevoir.
- I set the pumpspeed to 5 (max)
 

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Discussion Starter #7
Odd , you have more rad space . I suspect it could be a flow rate issue. If you can try only one rad in the loop and see if there is a change. The GC Extreme stuff is quite good so i doubt that's it.
I doubt that it's a flow issue, but i don't see the water moving (just clear water).
I have this pump: Alphacool Eisbecher D5 150mm Acetal reservoir incl. 1x Alphacool VPP655 pump (replaced the 150mm with 300mm).
 

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I doubt that it's a flow issue, but i don't see the water moving (just clear water).
I have this pump: Alphacool Eisbecher D5 150mm Acetal reservoir incl. 1x Alphacool VPP655 pump (replaced the 150mm with 300mm).
yes you have a strong pump, but that does not mean, that you have a good flow rate on that water loop.

to give a example, I did with my own system, if I have a 2.4LPM flow rate on my water loop, even with 2 X 360mm radiators, I will have a 10C delta T to my water.
with the way I configure my water loops for high flow rates, that same water loop can run with a 4C delta T to the water.

https://www.overclock.net/forum/61-water-cooling/1573189-serial-vs-parallel-9-6lpm.html

so yes, this could be a flow issue, that is a large serial water loop.

I have another build that has a flow rate of 12LPM I will simplify that water loop to explain why this works. lets assume that it is three of the same water blocks on the water loop, lets also assume that there is 2 liters of liquid in the system.

https://www.overclock.net/forum/61-water-cooling/1615072-cpu-radiator-upgrade-water-cooled-rig.html

so for a water loop at 12LPM and 3 water blocks in parallel, each of the water blocks has a flow rate through it of 4LPM, that means that all the water in the water loop goes through the water blocks twice every minute. now with that same flow rate of 12LPM, and 2 radiators in parallel, each of the radiators has a flow rate through it of 6LPM, that means that all the water in the water loop goes through the radiators three times every minute. so the water is literally going through the radiators, more often than it does the water blocks, this helps the radiators to operate more efficiently.

https://imgur.com/a/V1rxP12
 

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Discussion Starter #9 (Edited)
yes you have a strong pump, but that does not mean, that you have a good flow rate on that water loop.

to give a example, I did with my own system, if I have a 2.4LPM flow rate on my water loop, even with 2 X 360mm radiators, I will have a 10C delta T to my water.
with the way I configure my water loops for high flow rates, that same water loop can run with a 4C delta T to the water.

https://www.overclock.net/forum/61-water-cooling/1573189-serial-vs-parallel-9-6lpm.html

so yes, this could be a flow issue, that is a large serial water loop.

I have another build that has a flow rate of 12LPM I will simplify that water loop to explain why this works. lets assume that it is three of the same water blocks on the water loop, lets also assume that there is 2 liters of liquid in the system.

https://www.overclock.net/forum/61-water-cooling/1615072-cpu-radiator-upgrade-water-cooled-rig.html

so for a water loop at 12LPM and 3 water blocks in parallel, each of the water blocks has a flow rate through it of 4LPM, that means that all the water in the water loop goes through the water blocks twice every minute. now with that same flow rate of 12LPM, and 2 radiators in parallel, each of the radiators has a flow rate through it of 6LPM, that means that all the water in the water loop goes through the radiators three times every minute. so the water is literally going through the radiators, more often than it does the water blocks, this helps the radiators to operate more efficiently.

https://imgur.com/a/V1rxP12
Whew, thanks for that explaination dude! Never thought it could be like that.

But, my loop is the following:

http://puu.sh/AXuPY/0dcbf1bce1.png

Black = rad
Red = tube
Green = pump/res combo
Blue = cpu/gpu
 

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Discussion Starter #11

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Discussion Starter #12
Should you be able to feel the water flowing through the tubes? Because i feel no movement, not even when i try to squish the tubes. Only thing i feel is the vibrance of the fans..
 

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well than 9000RPM's would be 9LPM. or 1500RPM's would be 1.5LPM.
 

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Mr.4way SLI
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Drain some of the res and watch when it is running and see how much it is swirling in the res/pump. a D5 on 5 will move a good bit of fluid and it is something you would see in the res.
 

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Discussion Starter #15
Drain some of the res and watch when it is running and see how much it is swirling in the res/pump. a D5 on 5 will move a good bit of fluid and it is something you would see in the res.
Yeah, will do that. Was thinking about the same, but i barely have time right now.

I'll try to keep this thread up 2 date!
 
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