The Dragon 64 was released in 1983 as an upgraded version of the Dragon 32 computer. There were few big differences between the two machines, although the Dragon 64 had 64k of RAM (hence the name) and an added RS232 interface port, as well as a grey, rather than beige outer case. This machine is rare on the collectors' market, and can fetch a hefty price when sold on the likes of eBay.