512K VRAM in SIMMs (for 256 colors) is standard. VRAM is expandable to 1MB for 32,000 colors.
The Macintosh LC 475 works with all Apple and many third-party displays from 12-inch to 21-inch, including portrait displays and VGA monitors.
Other Apple and non-Apple monitors may also be supported, if used in conjunction with expansion cards or adapters.