List of CPU architectures

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The following is a list of notable CPU architectures

Embedded CPU architectures

• ARM's ARM Architecture
• Atmel's AVR architecture
• Microchip's PIC architecture
• Intel's 8051 architecture
• Zilog's Z80 architecture
• Western Design Center's 65816 architecture
• Hitachi's SuperH architecture
• Axis Communications' ETRAX CRIS architecture
• Power Architecture (formerly PowerPC)

Microcomputer CPU architectures

• pre-x86
• x86
  • Intel's IA-32 architecture, also called x86-32
  • x86-64 with AMD's AMD64 and Intel's Intel 64 version of it
• Motorola's 6800 and 68000 architectures
• MOS Technology's 6502 architecture
• Zilog's Z80 architecture
• Power Architecture (formerly IBM POWER and PowerPC)
• The Advanced RISC Machines' (originally Acorn) ARM and StrongARM/XScale architectures

Workstation/Server CPU architectures

• DEC's Alpha architecture
• HP's PA-RISC architecture
• Power Architecture (formerly IBM POWER and PowerPC)
• Intel's Itanium architecture (formerly IA-64)
• MIPS Computer Systems Inc.'s MIPS architecture
• Sun Microsystems's SPARC architecture

Mini/Mainframe CPU architectures

• Burroughs large systems architecture (1961-present) currently supported in the Unisys ClearPath/MCP series.
• IBM's System/360, System/370, ESA/390 and z/Architecture (1964-present)
• DEC's PDP-11 architecture, and its successor, the VAX architecture
• UNIVAC 1100/2200 series architecture (currently supported by Unisys ClearPath IX computers)
• MIL-STD-1750A - the U.S.'s military standard computer
• AP-101 - the space shuttle's computer

Mixed core CPU architectures

• IBM's Cell architecture (a general purpose architecture that uses a POWER4 based core and 8 RISC based co-processors)
• CAS's Loongson 3
• Parallax Propeller, a 160 MIPS multicore microcontroller with eight 32-bit RISC cores.

Historically important CPUs

• EDSAC - the first practical stored-program computer
• Apollo Guidance Computer, used in the moon flights
• MIL-STD-1750 An early CPU, standardized for military and aerospace embedded systems.
• MIPS R4000 - the first microprocessor to use a 64-bit datapath
• Intel 4004 - the first microprocessor