=== The 664 ===
[[Image:cpc664Amstrad-cpc-664.jpgpng|left|thumb|200px300px|Amstrad CPC [[664]] with colour monitor in 80-column display mode]]
In June 1985, Amstrad took the initial design and, building upon the same idea, removed the tape recorder and replaced it with a disc drive, using the same hardware sold as the [[DDI-1]] add-on for 464 owners. The result: the CPC664. Sporting a less colourful and easier-to-type-on keyboard, the CPC664 appealed as a more serious machine and proved a success, especially due to its quite fast 3", 180KB/side drive.