The architecture never enjoyed much market success, and the only computer manufacturers to create major product lines using Clipper processors were Intergraph and High Level Hardware, although Opus Systems offered a product based on the Clipper as part of its Personal Mainframe range.

The final model of the Clipper was the C400, released in 1990, which was extensively redesigned to be faster and added more floating-point registers.

The C400 processor combined two key architectural techniques to achieve a new level of performance — superscalar instruction dispatch and superpipelined operation.

The Clipper has 16 integer registers (R15 is used as the stack pointer), 16 floating-point registers (limited to 8 in early implementations), plus a program counter (PC), a processor status word (PSW) containing ALU and FPU status flags and trap enables, and a system status word (SSW) containing external interrupt enable, user/supervisor mode, and address translation control bits.

These systems included the InterAct, InterServe, and InterPro product lines and were targeted largely at the CAD market.

Intergraph did work on a version of Microsoft Windows NT for Clipper systems and publicly demonstrated it, but this effort was canceled before release.

[5] Intergraph decided to discontinue the Clipper line and began selling x86 systems with Windows NT instead.