Complex sentence: In contrast, higher-end PC systems of this era could operate 1024x768 at 72Hz with a full 256 color display AGAs highest resolution was 1440x580 (262144 colors) in interlaced 50Hz PAL mode, when overscan was used.
Split into simpler sentences: In contrast, higher-end PC systems of this era could operate 1024x768 at 72Hz with a full 256 color display. AGA's highest resolution is 1440x580 (262144 colors) in interlaced 50Hz PAL mode, when overscan was used.