Original War runs in three screen resolutions: # PII233 32Mb or equivalent 640*480 only low detail # PII266 32Mb or equivalent 800*600 low detail # PIII266 64Mb or equivalent 800*600 high detail # PIII500 64Mb or better 1024*768 only high detail The game runs on AMD K6-2 too, minimum is 333Mhz (recomennded 640*480 or 800*600 and small-scale graphics). Low detail and high detail are two versions of graphics (i.e. sprites of buildings, characters, vehicles, trees, explosions, etc.) - high detail version is recommended for most users. Low detail version of graphics substantially decreases the memory requirements of game. If you have less than 64 MB of RAM and a slow hard drive you should switch to Small-scale graphics. If you have 128Mb RAM or more then you should be fine with the Large-scale graphics. Lower resolution also decreases the memory requirements, but not very much. It substantially increases performance. In game are also graphical options, which has some influance on performance (i.e. shadows, animated ground etc.)