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Update: I put an extra ddc pump with the iceman pump res combo, optimize the tube routing and use only 7 90 degree fittings and 2 45 degree fittings.

It turns out dual pump is a must for this triple rad build. There is always a misconception in all kinds of discussion that "ONE 18W PUMP CAN EASILY DRIVE 2 TO 3 RADIATORS".

Well, apparently it's not the case for ITX water cooling. People who used to water-cool their mid-tower build generally used the regular/beefy rads and those rads are less restrictive. Also, you will inevitably use some 45 or 90-degree fittings for your tubing given the restricted space for itx builds.


Hands down, one 18w DDC pump is not strong enough to drive a triple rad NR200.

Data:

One 18W DDC@max, 0.8GPM.

Two 18W DDC@max, 1.15GPM

Two 18W DDC@quiet level, 0.75GPM


Ideally, you want to reach 1.5GPM, but anything above 1GPM should be good enough.