Fluid speed problem with Eisblock 12984

[Ranger_Trivette]

Hi,
i bought an "Alphacool Eisblock Aurora Plexi GPX-N RTX 2070 Super Windforce".
the product is very nice. quality are higher than expected.
i'm a mechanical engineer, i know very well mechanical machining and i really appreciate the quality of this product.

let me explain the issue.
i'm running a twin custom loop.
one for the CPU one for the GPU.
same pipes, same pump, same radiator.
i tested all components separately with no issues.

the problem is that flow speed in the GPU circuit is too low.
with the same regulation of the CPU and GPU pumps, there are a giant difference beetwen the two loops.
setting the GPU pump to the max power, the problem still exist. the flow speed doesn't increase.
the block looks very restrictive.

i've tested all the temps. air and fluid liquid.
everithing is acceptable.
the biggest problem regard the fluid separation.
i'm using a white pastel liquid from mayhems.
in the CPU loop i've no issue.
in the GPU loop, the white get separated from the water due to the fact that the fluid doesn't have enough speed to mix himself.

 

[Eddy]

The radiator is very restrictive, that is correct. You cannot compare this to a CPU cooler. And Pastel fluid has a lower viscosity than clear liquid. A further problem can of course be that the cooling fins have become clogged by the pastel liquid. This is because the paint particles like to settle in the fins. Therefore pastel is always only a show liquid and never suitable for continuous use.

Btw... nice lokking system

 

[Ranger_Trivette]

what do you mean with radiator? is it a part of the GPU waterblock?

 

[Eddy]

Sorry, i ment the GPU block not the radaitor... XD.