Liquid Flow Restriction
I used a Swiftech MCP50X pump with a FrozenQ 400mL cylindrical reservoir. The pump was powered by a direct SATA connection to an EVGA 1300G2 PSU, and was controlled by an Aquacomputer Aquaero 6 XT. There was an in-line flow meter previously calibrated, as well as a Dwyer 490 Series 1 wet-wet manometer to measure the pressure drop of the component under test- in this case each radiator. Every component was connected by 1/2″ x 3/4″ tubing, compression fittings and 2 T-fittings with the manometer.
Results and discussion
Given the 14 coolant tubes at 2.0 mm thickness vs the usual 12 at 2 mm, the EximoSX 360 comes in around average here in the sample set and do note that most of my tested radiators are in the quad 120 and 140 mm range so take a look at those too to get an idea on how this would fare against other models. Since the core has a single row, we have a total of 14 tubes in parallel here so it does fare worse relative to most other dual/triple row radiators with the exception being the Black Ice Nemesis series with the 1.2 mm thick coolant tubes.
To provide some further context, here it is up against an average 2017 CPU water block and here we can see the sheer difference in that blocks are going to be the most restrictive elements in a loop and so worrying about the differential change in liquid flow restriction for different 360 mm radiators should not be the deciding factor on choosing your pump.