The Atari 800XE.   A deviantion from the numbering system used within Atari from 1985-forward when the company was purchased by Tramiel Technologies Limited from Warner Communications in July of 1984.    The system is packaged in the same case design of the 1985 Atari 130XE.    The 800XE in fact is a cost reduced version of the original 130XE motherboard with only 64K of memory instead of the 130XE's 128K of memory.
 

        The Atari 800XE was the last of the XE line of computer systems.   Having said this it would be assumed that such a system would be the most reliable and well designed system.   However the 800XE turned out to be more of excercise of simply using up existing spare parts and dumping them onto the European market.   The 800XE is plagued with timing issues, incompatibilities and poor reliability since its chipsets are a mis-match of various revision levels and some of the semiconductor components were not within spec or were poor qualitiy components which failed to meet their own spec's.     While the 800XE was produced in small numbers and in the European market, it may be a nice item to add to a collection, but a 130XE is a better choice to actually use in a productive manner.