The HD 4600 is actually enough for 2-3x IR in most games, so Dolphin isn't likely to be the one thing driving you for an upgrade. You'll want something better for PC games, though.
OS: Windows 10 64 bit Professional
CPU: AMD Ryzen 5900X
RAM: 16GB
GPU: Radeon Vega 56
CPU: AMD Ryzen 5900X
RAM: 16GB
GPU: Radeon Vega 56
