Starting with the PCH 100 Series, Intel has completely redesigned the PCH chip. The architecture of embedded microcontrollers was switched from ARCompact by ARC to x86. The Minute IA (MIA) 32-bit microcontroller was chosen as the basis; it is used in Intel Edison microcomputers and SoCs Quark and based on a rather old scalar Intel 486 microprocessor with the addition of a set of instructions (ISA) from the Pentium processor.