UPDATE: I added a RADEON VII with EK Waterblock to the Comparison. A Discord User and myself tested our Radeon RX 5700 XT's today. We both ran a 15 minute Furmark test. PowerColor Liquid Devil 5700 XT vs AMD 5700 XT Anniv. Ed. with Bykski Water Block. Both had 2 X 360 Radiators and both ended up with inline water at 36C. He used Liquid Devil's UNLEASHED BIOS stock and I used AMD Anniv. Factory OC BIOS stock. He saved time not having to put on WB and I saved $50 and lost an hour. We called it a draw. Above are the results. ALL TESTS WERE RAN ON DEC. 21, 2019.
Here are my previous testing results from when I installed the Byski Water Block on the AMD Radeon 5700 XT Anniversary Edition along with the AMD 3950X CPU.