Windows Vista displays the incorrect dedicated video memory size for certain display adapters. The incorrect dedicated video memory size appears in the system display settings and in the Windows System Assessment tool (Winsat.exe).

This problem occurs if the dedicated video memory size is not a power of 2. For example, if a display adapter has 320 megabytes (MB) of dedicated video memory, Windows Vista shows that only 256 MB of dedicated video memory is available for the display adapter.