Flow Rate Testing
If you don’t know how to read a pressure/flow plot then check out our guide. Testing was done by hooking up the block under test to a water faucet/tap and varying flow throught it. Flow was measured using a 5GPM King Instruments Rotameter, and pressure across the block was measured using a Dwyer differential manometer. A Koolance CPU-380 block is also used here as a reference
It can be seen that all but two of the blocks have similarly low restriction. The Koolance is among these “good blocks” albeit at the tail end. This is an improvement over the Koolance R9-290X block which was almost twice as restrictive! This is great news then, but does this change in core affect performance?
Onwards to thermal performance!
