Unsolved
9 Legend
•
12.3K Posts
0
562
Dell did not always do it right (rear mounted AIO radiator tubes)
it has come to my attention that AIO tubes should ideally be oriented at the most dependent (lowest) position of rear chassis wall mounted radiator, thanks to Steve at GN. then I looked at multiple Dell desktop that uses AIO. Most of them were done correctly. The reason to position the tubes at lowest position is to avoid air trapped in the tubes which can cause noise and premature cooler failure.
Aurora R13/14, XPS 8950, Aurora R4. Aurora R1. Did Dell do this accidentally right or intentionally?
but in Area 51 R2 the tubes were the opposite (at highest position). Looked like there Dell missed it. Interestingly I have not seen anyone noted this before. same wrong design in A51 R5 etc.
PS top mounted AIO such as Aurora R5-8 and R9-12 (and Area 51 R1) automatically avoids this issue because air/fluid level is always at top of radiator water tank.
redxps630
9 Legend
9 Legend
•
12.3K Posts
0
July 12th, 2022 10:00
this user mod of A51 R2 did it correctly.
ProfessorW00d
4 Operator
4 Operator
•
2.2K Posts
0
July 12th, 2022 11:00
. . . further information
Vanadiel
6 Professor
6 Professor
•
6.5K Posts
0
July 12th, 2022 14:00
I always wondered what is truly better from a cooling perspective. At one hand I can see the argument about the air bubbles, but on the other hand what does the "correct" orientation do for liquid flow when you are now pushing against all that fluid that is now all above you with gravity working against you?
I think they should test that and measure flow and cooling performance under both conditions.
redxps630
9 Legend
9 Legend
•
12.3K Posts
0
July 12th, 2022 15:00
Corsair recommendation:
What are ideal ways to mount the radiator?
Radiator mounted at the front with the tube side at the bottom
One good mounting position is to mount the radiator of the cooler at the frontal area of the case interior. The side of the radiator where the tubes connect should be at the bottom, and the pump should be mounted in a position where it is slightly lower than the top of the radiator, where air is captured.
Radiator mounted on top of the case with tubes down
One good mounting position is to place the radiator at the top of the case with the tubes pointing downwards. This ensures the pump is below the radiator and that air will sit at the top of the loop and not be sucked into the tubes.
The rule of AiO CPU liquid cooling is – Always mount your radiator so the top is ABOVE the highest point of the pump (CPU), and the inlet is BELOW the pump.
ProfessorW00d
4 Operator
4 Operator
•
2.2K Posts
0
July 12th, 2022 16:00
ProfessorW00d
4 Operator
4 Operator
•
2.2K Posts
0
July 12th, 2022 20:00
A "tubes down" rad orientation does nothing to flow rate. With respect to gravity; one tube is flowing against, while the other tube is being helped . . . the affect is effectively 'zero'. You would be amazed by how fast the fluid moves through the system.