A sixth-generation, 64-bit 80x86
designed by Cyrix
and manufactured by IBM
. The 6x86 combines aspects of both RISC
. It has a superscalar
, superpipelined core, and performs register renaming, speculative execution
, out-of-order completion, and data dependency removal. It has a 16-kilobyte
and is socket-compatible with the Intel Pentium P54C. It has six performance levels: PR 90+, PR 120+, PR 133+, PR 150+, PR 166+ and PR 200+.
The architecture of the 6x86 is more advanced than that of the Intel Pentium, incorporating some of the features of the Intel Pentium Pro. At a given clock rate it executes most code more quickly than a Pentium would. However, its FPU is considerably less efficient than Intel's.
This article (or an earlier version of it) contains material from FOLDOC, used with permission.