A 5 MIPS workstation built around the racey Fairchild Clipper chip set and starting at a startling $3,000 in OEM quantities, has been introduced by Opus Systems of Cupertino, California. Called the Series 300 Personal Mainframe, the station runs under Unix System V.3 and includes an 80286 processor configured as an IBM AT-alike for concurrent running of MS-DOS applications as a front-end processor. The Personal Mainframe will initially use 25MHz and 30MHz versions of the Clipper, and first deliveries are set for the current quarter.