High Quality Content by WIKIPEDIA articles! AltiVec is a floating point and integer SIMD instruction set designed and owned by Apple, IBM and Freescale Semiconductor, formerly the Semiconductor Products Sector of Motorola, (the AIM alliance), and implemented on versions of the PowerPC including Motorola`s G4, IBM`s G5 and POWER6 processors, and P.A. Semi`s PWRficient PA6T. AltiVec is a trademark owned solely by Freescale, so the system is also referred to as Velocity Engine by Apple and VMX by IBM and P.A. Semi, although IBM has recently begun using AltiVec as well.