Hey there AMD, ... I’ve heard of people with 1000W PSUs having trouble with crossfire.

Rise of the Triad (2013) AMD software and drivers are designed to work best for up-to-date operating systems. DX12 mGPU is nearly flawless aside from intermittent stutter. This item XFX Radeon RX Vega 64 8 GB HBM2 3 x DP HDMI Graphics Card RX-VEGMTBFX6 XFX RX 570 4GB GDDR5 RS XXX Edition PCI-Express 3.0 Graphics Card RX-570P427D6,Black/Red XFX Radeon RX 580 GTS XXX Edition 1386MHz OC+, 8GB GDDR5, VR Ready, Dual BIOS, 3xDP HDMI DVI, AMD Graphics Card (RX-580P8DFD6) The other half of the problem is that the PSU is being a bit overly sensitive on its overcurrent protection, but yeah, Vega is a spicy boi. Adrenalin 18.2.3-----Adrenalin 18.8.1. Please be sure to update your operating system before installing drivers. Tested with RX580 x 2 and Official Crossfire Profile.-----DX11 Crossfire with Fury X+Fury has unplayable stutter. Discussion. One Power Hungry GPU: AMD Radeon Vega 56 Revisited in 2020 Radeon RX Vega 56 vs. Radeon RX 5600 XT By Steven Walton on March 2, 2020

DX12 performance beats DX11 in singal card but DX11 Crossfire performs noticeably better than DX12 multi-gpu. Vega 64 in 2020, worth the deal?