Released in 1987, the ZX Spectrum +3 is similar in appearance to the +2A, but instead of the tape drive, came complete with a 3-inch built in floppy disk drive, as was fitted to the Amstrad CPC 6128.

The machine initially retailed for £249, before a later price drop to £199. This Spectrum model was able to run the CP/M operating system without any additional hardware and is the only Spectrum that is able to do this.
In December 1990, when Amstrad decided to relaunch their CPC range, then production of the +3 ceased, however production of the +2B model continued as it was not considered to be in direct competition with Amstrads CPC range.