Windows 3.0

This version of windows was released in 1990 and was the last version to support 8088/8086 real mode (640k RAM). Windows 3.1 had a choice between 286 standard mode (max 16MB RAM) and 386 enhanced mode. Regardless of which mode is chosen, Windows 3.0 cannot recognize more than 16 MB of RAM, even in 386 enhanced mode. Windows 3.0 can run in up to 24 bit color mode, given the proper display driver and graphics card.