Water Cooling Temps - Before and After

pr0xibus

pr0xibus

pr0xibus

Associate
Joined
13 Apr 2012
Posts
93
Location
Forfar, Scotland
Morning Folks.

Heading might be misleading but here goes.

Specs first.
Ryzen 5 3600
32GB DDR4
NVIDIA 2080 Super
Aorus B550m Elite

Full custom loop
Front Barrow Distro Plate
Barrow CPU Block
Corsair Hydro X Series
2 x 240 Barrow Radiators ( Bottom Pull, Top Push)
Lian Li case O11D with side panel off


When I first watercooled the pc, the GPU would always get to 43 Degrees during gameplay, This eventually averaged to roughly 48 after a few months. Currently a few months after its now averaging around 50 degrees, with spiked going upto 52 degrees. I flushed out the system yesterday and added new coolant (De-ionised water) with mayhems inhibitor, but its again between

48 - 52 Degrees
this is at a 94% load,
Hot Spot is current 67.7 and
Memory Junciton is 66.8,
measured using argus monitor. Water temp never goes above 36. Ambient room temp is 20 degrees

Now the temps I believe are all fine, more than fine in some cases, but would there be any physical reason why the temps creeped up from 43 - 52 over a few months?
This is tested on the only performance game I play (Dont Laugh) Call of Duty Vanguard, Settings on Low at 2k 165hz

Screenshot-2022-06-18-082606.png
 
When that happened to me in the course of 3 months following a water change then new coolant for another 3 months, I saw the Bykski flow meter showing a slight flow rate decrease. It started at 2.5 liter a minute that gradually fell to 2.1 - 2.0, I saw my GPU and CPU climb 3 degrees. The GPU was always around 45C that ended up to around 48C Same with the processor getting closer to 70C.

This was when I found blockage on the micro fins and having to tear down/scrub the blocks.


Do you know what your flow rates were during a clean system and to now?
 
V F said:
When that happened to me in the course of 3 months following a water change then new coolant for another 3 months, I saw the Bykski flow meter showing a slight flow rate decrease. It started at 2.5 liter a minute that gradually fell to 2.1 - 2.0, I saw my GPU and CPU climb 3 degrees. The GPU was always around 45C that ended up to around 48C Same with the processor getting closer to 70C.

This was when I found blockage on the micro fins and having to tear down/scrub the blocks.


Do you know what your flow rates were during a clean system and to now?
Click to expand...
Afternoon

I tore the system apart 3 months ago and dismantled both cpu/gpu and pump as I was cleaning out ek azure blue solid, left a sludge on the pumP... Even with that problem the flow rate was 4.25, today the flow rate is 4.20-4.25 hasn't changed at all.

Water temp never goes above 35 during intense gaming, idle its 28

Its a weird one
 
V F said:
When that happened to me in the course of 3 months following a water change then new coolant for another 3 months, I saw the Bykski flow meter showing a slight flow rate decrease. It started at 2.5 liter a minute that gradually fell to 2.1 - 2.0, I saw my GPU and CPU climb 3 degrees. The GPU was always around 45C that ended up to around 48C Same with the processor getting closer to 70C.

This was when I found blockage on the micro fins and having to tear down/scrub the blocks.


Do you know what your flow rates were during a clean system and to now?
Click to expand...
Same, after nearly a year i watched as my temps slowly climbed. Took it all apart and found blockage in both my cpu and gpu block, bits of oring and not sure what else. Was only a partial block but enough to make a difference. I was seeing as high as 50c on the gpu core when initially it only sat around 42c
 
Over time two things will change. One, the cleanliness of your radiators and the blocks. two, the environment.

In winter, the ambient temperature is the heat setting for your house, probably somewhere around 20-21C. In summer, the heating is likely off, the room temperature will vary massively with the outside temperature

As for cleanliness, either your radiators will clog up or your fan filters or both. inside your loop, your blocks have very thin channels which can individually block up very easily effecting the flow through specific points causing hot spots.

Lastly, another variant is the thermal paste which can lose its effectiveness over time.
 
Cheers for the replies folks.

Pump failed on me a few days ago so changed up the water cooling a bit.
Removed the 2 x 240 Radiators, and the Distro Plate.
Added a 1 x 360 Radiator and the EK Kinetic Pump and large res and a simple loop.

Straight away pump speeds are much better than the X-top 4.2, Max previously 4.2 flow rate, now it touches 5.25.
Temps during gameplay are CPU - 54, GPU - 45 degrees at maximum Graphics too, so not too bad there.

Maybe with the distro plate, there were too many 90 degrees turns for the water flow, reducing flow etc

unsure how 1 x 360 can cool the gpu and cpu to a decent temp, yet 2 x 240 i.e. 1 x 240 for the cpu and 1 x 240 for the gpu couldnt keep it this cool.

Will give it a few weeks to see if the temps creep up
 
There is a logical reason for these things

Your temp is higher because of one of these:

- Temp in your room is higher
- Blocks/Radiator/Pump has gunk
- Pump flow rate performance is reducing
- Thermal pads on block failing
- Thermal paste on block failing
- Coolant is breaking down
- Added other new components into PC
- Fans not spinning at same rpm
 
pr0xibus said:
Cheers for the replies folks.

Pump failed on me a few days ago so changed up the water cooling a bit.
Removed the 2 x 240 Radiators, and the Distro Plate.
Added a 1 x 360 Radiator and the EK Kinetic Pump and large res and a simple loop.

Straight away pump speeds are much better than the X-top 4.2, Max previously 4.2 flow rate, now it touches 5.25.
Temps during gameplay are CPU - 54, GPU - 45 degrees at maximum Graphics too, so not too bad there.

Maybe with the distro plate, there were too many 90 degrees turns for the water flow, reducing flow etc

unsure how 1 x 360 can cool the gpu and cpu to a decent temp, yet 2 x 240 i.e. 1 x 240 for the cpu and 1 x 240 for the gpu couldnt keep it this cool.

Will give it a few weeks to see if the temps creep up
Click to expand...

water flow rates have been proven to not matter except if the rate is very very low. I would suggest checking the two 240 rads you took out. How much dust is there? The most likely reason is simply that the 360 is clean and the 240's weren't.
 
So...

Purchased some Grissly Kryonaut paste, removed everything, and cleaned out both blocks (CPU, GPU). Redone the thermal pads on the Vrams too.

After a large leak from the cpu block (My fault) and a bath in 99% Iso Prop for the Motherboard, NVME and GPU. Redone all the lines.

Now sitting perfect

During Gameplay, CPU (54 Degrees), GPU (41 Degrees), Idle CPU (29 Degrees), GPU (27 Degrees).

Only tested on Vanguard and Assetto Corsa.

Cheers for the replies folks
 
You must log in or register to reply here.
Back
Top Bottom