Template:mpu AMD-K6-III+/400ACZ is a 32-bit x86 desktop microprocessor designed by AMD and introduced in early 1999. This MPU which was manufactured on a 0.18 µm process, based on K6-III microarchitecture, operated at 400 MHz with a bus of 100 MHz and a multiplier of 4 with a maximum power dissipation rating of 16 W.