There is a new texture format available DXT1 only below the Compressed Textures selection. Does this mean that DXT1 only is better than Compressed Textures?
No, Compressed Textures is the best and also the default selection. ‘DXT1 only’ is new, and that is why it was put last in the list. ‘DXT1 only’ was added because some graphics cards only support DXT1 compressed textures. The original 3DMark2001 always used uncompressed textures on such cards, but the Second Edition enables this partial compressed texture usage. In ‘DXT1 only’ mode, those textures that are DXT1 compressed, are used as compressed, and 32 bit uncompressed textures are used instead of the textures that are DXT3 compressed. Since all uncompressed textures in 3DMark2001 are downscaled to 1/4 of its compressed texture size, Compressed Texture mode does offer the best image quality, but ‘DXT1 only’ is better than 32bit textures.
