<P> Some CPUs have been specifically designed to have a very small set of instructions--but these designs are very different from classic RISC designs, so they have been given other names such as minimal instruction set computer (MISC), or transport triggered architecture (TTA), etc . </P> <P> RISC architectures have traditionally had few successes in the desktop PC and commodity server markets, where the x86 based platforms remain the dominant processor architecture . However, this may change, as ARM architecture based processors are being developed for higher performance systems . Manufacturers including Cavium, AMD, and Qualcomm have released ARM architecture based server processors . ARM is further partnered with Cray in 2017 to produce an ARM architecture based supercomputer . On the desktop, Microsoft announced that as part of a partnership with Qualcomm it planned to support the PC version of Windows 10 on Qualcomm Snapdragon - based devices in 2017 . These devices will support x86 based Win32 software via an x86 processor emulator . </P> <P> Outside of the desktop arena, however, the ARM architecture (RISC) is in widespread use in smartphones, tablets and many forms of embedded device . It is also the case that since the Pentium Pro (P6) Intel has been using an internal RISC processor core for its processors . </P> <P> While early RISC designs differed significantly from contemporary CISC designs, by 2000 the highest performing CPUs in the RISC line were almost indistinguishable from the highest performing CPUs in the CISC line . </P>

Memory access in risc architecture is limited to instructions