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IA32 Architecture Family: Difference between revisions
→Advanced Micro Device Intel-compatible Processors
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(→Advanced Micro Device Intel-compatible Processors: Removed "advertising" and "CPU history lore", see discussion.) |
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! Release Date
! [[FPU|FPU (80x87)]]
! [[Protected Mode]]
! [[SMP]]
! [[MMX]]
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! 8086
| 1978
| {{Maybe|Optional}}
| {{No}}
| {{No}}
| {{No}}
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! 80186
| 1982
| {{Maybe|Optional}}
| {{No}}
| {{No}}
| {{No}}
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! 80286
| 1982
| {{Maybe|Optional}}
| {{Maybe|16-bit only}}
| {{No}}
| {{No}}
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! 80386
| 1985
| {{Maybe|Optional}}
| {{Yes}}
| {{No}}
| {{No}}
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! 80486
| 1989
| {{Maybe|Optional}}
| {{Yes}}
| {{Yes}}
| {{No}}
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! Pentium
| 1993
| {{Yes}}
| {{Yes}}
| {{Yes}}
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! Pentium Pro
| 1995
| {{Yes}}
| {{Yes}}
| {{Yes}}
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! Pentium MMX
| 1996
| {{Yes}}
| {{Yes}}
| {{Yes}}
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! Pentium II
| 1997
| {{Yes}}
| {{Yes}}
| {{Yes}}
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! Pentium II Xeon
| 1998
| {{Yes}}
| {{Yes}}
| {{Yes}}
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! Pentium III
| 1999
| {{Yes}}
| {{Yes}}
| {{Yes}}
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! Pentium III Xeon
| 1999
| {{Yes}}
| {{Yes}}
| {{Yes}}
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! Pentium IV
| 2000
| {{Yes}}
| {{Yes}}
| {{Yes}}
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! Pentium M
| 2003
| {{Yes}}
| {{Yes}}
| {{Yes}}
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! Core
| 2003
| {{Yes}}
| {{Yes}}
| {{Yes}}
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! Xeon 51xx
| 2006
| {{Yes}}
| {{Yes}}
| {{Yes}}
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! Core 2
| 2006
| {{Yes}}
| {{Yes}}
| {{Yes}}
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! Xeon 54xx
| 2007
| {{Yes}}
| {{Yes}}
| {{Yes}}
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! Core i-series
| 2008
| {{Yes}}
| {{Yes}}
| {{Yes}}
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! Atom 200/300
| 2008
| {{Yes}}
| {{Yes}}
| {{Yes}}
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! Atom N-series
| 2008
| {{Yes}}
| {{Yes}}
| {{Yes}}
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! Atom Z-series
| 2008
| {{Yes}}
| {{Yes}}
| {{Yes}}
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==Advanced Micro Device Intel-compatible Processors==
AMD has been developing integrated circuits since the early 70's, they originally licensed the 80286 from Intel and branded it as the Am286. The company later went on to release its first Intel 386 clone, the Am386, in 1991.
The CPUID identifier string is "AuthenticAMD".
It is important to note that the "SSE" used by AMD and the "SSE" used by Intel
{| {{wikitable}}
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! Release Date
! [[FPU|FPU (80x87)]]
! [[Protected Mode]]
! [[SMP]]
! [[MMX]]
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! [[EM64T]]/[[AMD64]]
! Notes
|-
! Am386
| 1991
| {{Maybe|Optional}}
| {{Yes}}
| {{No}}
| {{No}}
| {{No}}
| {{No}}
| {{No}}
| {{No}}
| {{No}}
| AMD's first clone of the 32-bit i386 architecture, FPU was optional.
|-
! Am486
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| 1994
1995
| {{Yes}}
| {{Yes}}
| {{No}}
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! K5
| 1996
| {{Yes}}
| {{Yes}}
| {{No}}
| {{No}}
| {{No}}
|
| {{No}}
| {{No}}
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! K6
| 1997
| {{Yes}}
| {{Yes}}
| {{No}}
| {{Yes}}
| {{No}}
|
| {{No}}
| {{No}}
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! K6-2
| 1998
| {{Yes}}
| {{Yes}}
| {{No}}
| {{Yes}}
| {{Yes}}
| {{No}}
| {{No}}
| {{No}}
| AMD added 16 wait states to the execution of the LOOPcc and thus caused it to slow to the speed of a Pentium. They added a special case (speculation, might be coincidence) for the DEC (E)CX; Jcc combination, which is semantically equivalent with the LOOPcc instruction; since LOOPcc was faster on Intels, nobody used the DEC/Jcc combo there. So AMD kept the original speed for this combo, and specified in their optimization manuals that this was the preferred method over the loopcc instruction.▼
| {{No}}
▲| AMD added 16 wait states to the execution of the LOOPcc and thus caused it to slow to the speed of a Pentium. They added a special case (speculation, might be coincidence) for the DEC (E)CX; Jcc combination, which is semantically equivalent with the LOOPcc instruction; since LOOPcc was faster on Intels, nobody used the DEC/Jcc combo there. So AMD kept the original speed for this combo, and specified in their optimization manuals that this was the preferred method over the
The K6-2 also featured the 3DNOW! technology, which was "MMX using floating point numbers", and multiplexed (again) on the floating point registers. It was largely compatible with the P2
|-
! K6-3
| 1999
| {{Yes}}
|
| {{No}}
| {{Yes}}
| {{Yes}}
|
|
| {{No}}
| {{No}}
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| 1999
| {{Yes}}
|
| {{No}}
| {{Yes}}
| {{Yes}}
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! Athlon XP/MP
| 2001
| {{Yes}}
| {{Yes}}
| {{Maybe}}
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! Athlon 64
| 2003
| {{Yes}}
| {{Yes}}
| {{No}}
Line 388 ⟶ 433:
! Athlon 64 X2
| 2005
| {{Yes}}
| {{Yes}}
| {{Yes}}
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! Phenom
| 2007
| {{Yes}}
| {{Yes}}
| ?
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| SSE4a
| {{No}}
| {{Yes}}
|
|-
! Ryzen Series
| 2017
| {{Yes}}
| {{Yes}}
| {{Yes}}
| {{Yes}}
| {{No}}
| {{Yes}}
| SSE4.2
| {{Yes}}
| {{Yes}}
|
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===Cyrix===
Cyrix was a well-known CPU vendor from the 386 years (and slightly before), up to
==== Cyrix 387 ====
This isn't actually a processor
==== Cyrix 4x86 ====▼
▲==== Cyrix 4x86====
A processor that had the abilities of a 486. The first generation plugged into 386 sockets giving greater speeds without requiring extra hardware updates. Later editions could also be used on 486 motherboards.
==== Cyrix 5x86 ====
A processor that performed as a 486 and was socket-compatible. It features some of the Pentium's abilities, but not all (such as cmpxchg8b).
==== Cyrix 6x86 / M1 ====
This processor is, even though the name suggests otherwise, compatible with the 586 (Pentium). It didn't contain any of the MMX or PPro features but is nevertheless very nice. It performed slightly better per cycle compared to the Pentium Pro, and was thus given ratings. This was the time they were loathed for rating their processors, since the performance of floating point operations was lower than that of the Pentium Pro▼
▲This processor is, even though the name suggests otherwise, compatible with the 586 (Pentium). It didn't contain any of the MMX or PPro features
==== Cyrix 6x86MX / M2====▼
Was a Pentium MMX compatible processor, also using ratings which gave it a bad name to start with. It was again socket-compatible to the Pentium MMX and the older Pentiums (without MMX). It supported a few features from the Pentium Pro, among which the very usable CMOVcc set. This however wasn't well known at the time, and nobody seemed to care.▼
▲==== Cyrix 6x86MX / M2 ====
▲Was a Pentium MMX compatible processor, also using ratings
==== MediaGX ====
This was a chip that, apart from the CPU, included several peripherals on-chip including graphics and audio devices.
The company was bought by National Semiconductor, who sold the trademark to VIA. The MediaGX was developed further and was eventually bought by AMD who marketed it as the Geode.
=== Rise Technologies ===
==See Also==
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