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AGA was an incremental upgrade, rather than the dramatic upgrade of the other chipset that Commodore had begun in 1988, [[AAA chipset|AAA]], lacking many features that would have made it competitive with other graphic chip sets of its time. Apart from the graphics data fetches, AGA still operates on 16-bit data only, meaning that a lot of bandwidth is wasted during register accesses and [[Amiga Original chipset#Copper|copper]] and [[blitter]] operations. Also the lack of a [[packed pixel|chunky]] graphics mode is a speed impediment to graphics operations not tailored for [[Planar (computer graphics)|planar]] modes, as well as resulting in ghost artifacts during the common productivity task of [[scrolling]]. In practice, the AGA HAM ([[Hold-And-Modify]]) mode is mainly useful in painting programs, picture viewers and for video playback. Workbench in 256 colors is much slower than [[Amiga Enhanced Chip Set|ECS]] operation modes for normal application use; a workaround is to use multiple screens with different color depths. AGA also lacks flicker free higher resolution modes, being only able to display {{nowrap|640 × 480}} at {{nowrap|72 Hz}} flicker-free operation. {{nowrap|800 × 600}} mode is rarely used as it could only operate at a flickering {{nowrap|60 Hz}} interlaced mode. In contrast, higher-end PC systems of this era could operate {{nowrap|1024 × 768}} at {{nowrap|72 Hz}} with a full 256-color display. AGA's highest resolution is {{nowrap|1440 × 580}} {{nowrap|(262 144 colors)}} in interlaced {{nowrap|50 Hz}} {{nowrap|PAL mode,}} when overscan was used.
These missed opportunities in the AGA upgrade contributed to the [[Amiga]] ultimately losing technical leadership in the [[multimedia]] area. After the long delayed AAA was finally shelved, AGA was to be succeeded by the [[Hombre chipset]],
AGA was used in the [[Amiga CD32|CD32]], [[Amiga 1200]] and [[Amiga 4000]].
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