Acer 4150, 4650 manual Parameter Description

Parameter		Description
Video Memory	VGA Memory size :
	Discrete = 64 or 128MB (depends on actual VRAM size)
	TurboCache = 32MB (actual TurboCache VRAM size)
	Intel 915 DVMT: selectable between the following:
	1.	64MB (8MB pre-allocated + 56MB DVMT)
	2.	128MB (8MB pre-allocated + 128DVMT). This is the default
		value.
	3.	Max DVMT (160MB on 256MB system memory, 224MB on
		512MB and above system memory).

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