I purchased two SER 5 mini PCs of the exact same configuration from Amazon last week. However they appear to be different as one of them only shows 512 MB VRAM while the other shows 3072 MB VRAM. The bios systems also seems to be different - the one with 512 MB VRAM is UEFI enabled, while the other is not. Is there a way to change the amount of VRAM on the one showing 512 MB?
Please press the delete key as soon as you turn on the PC, go to BIOS, Advance→ADM CBS→NBIO Common options→GFX Confiruration→→iGPU Configuration【UMA_SPECIFIED】→UMA Frame buffer Size, then you can change the VRAM there.