Is 16GB dual-channel RAM necessary for the 5600G's integrated graphics?

Yes, 16GB dual-channel makes a huge difference for the 5600G’s iGPU—think 30-50% better frame rates in many games. Single-channel RAM starves the Vega 7 iGPU, leaving 40% or more performance on the table. 8GB single-channel can turn games like Fortnite into a stuttery mess, while 16GB dual-channel makes them genuinely playable at 1080p low settings. It’s the bare minimum for usable gaming on this APU.