Most don't disable entirely. You need to ask the board maker if they have such a feature.
I've recently upgraded my GPU and all of my monitors are running off it, so I'm left with my AMD A8-5500 APU which isn't doing any graphics processing but is still claiming 533MB of system memory as VRAM (control panel says 7.46GB of the 8GB is usable). This seems like a huge waste but I can't find how to reclaim it. CCC recognises the APU graphics as disabled.
Any help is appreciated, thanks.

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