AMD

an American multinational [|semiconductor] company based in [|Sunnyvale, California], and behind Intel the second-largest global supplier of microprocessors based on the x86 architecture and also one of the largest suppliers of [|graphics processing] units. In 2003, AMD launched the [|Athlon 64] (Hammer, AMD64, K8) and pioneered the x86-64 instruction set. Until Intel introduced the [|Core 2] [|microarchitecture] in 2006, AMD64 was the dominating architecture for computer chess in the 2000s. With the [|Zen] micro-architecture and the release of the [|Ryzen] processor in early 2017, it seems that AMD can recover lost ground. However, early Ryzen's BMI2 performance is worse, in particular using BMI2 PEXT in chess programs - one should conditionally compile using magic bitboards instead of PEXT bitboards, otherwise preferable for compatible Intel processors. || toc =Sponsoring=
 * Home * Organizations * AMD**
 * [[image:320px-Amdheadquarters.jpg link="https://en.wikipedia.org/wiki/File:Amdheadquarters.jpg"]] ||~  || **Advanced Micro Devices, Inc.** or **AMD**,
 * AMD headquarters, [|Sunnyvale, California] ||~  ||^   ||
 * WMCCC 1997
 * BELCT 2001

=Photos=
 * [[image:JollyBannermann1997.jpg width="640" link="http://www.thorstenczub.de/pariswm97.html"]] ||
 * Christophe Jolly and Walter Bannerman, Paris WMCCC 1997 ||
 * [[image:anand1.jpg width="640" link="http://www.top-5000.nl/int/aaron.htm"]] ||
 * Rebel vs [|Viswanathan Anand], [|Ischia], July 1998 - back of Ed Schröder  and Jeroen Noomen  ||
 * [[image:4.01-JochenRoland.jpg width="640" link="http://www.quarkchess.de/belct/body_index.html"]] ||
 * Jochen Peussner and Roland Pfister, BELCT 2001 ||
 * [[image:4.01-JochenRoland.jpg width="640" link="http://www.quarkchess.de/belct/body_index.html"]] ||
 * Jochen Peussner and Roland Pfister, BELCT 2001 ||

=x86 Architectures=
 * ~ Year ||||~ Architecture ||
 * ~ 1991 || x86 || [|Am386] ||
 * ~ 1993 || x86 || [|Am486] ||
 * ~ 1996 || x86 || [|AMD K5] ||
 * ~ 1997 || x86 || [|AMD K6] ||
 * ~ 1998 || x86 || [|AMD K6-2] ||
 * ~ 1999 || x86 || [|AMD K7 | Athlon] ||
 * ~ 2003 || x86-64 || [|AMD K8] ||
 * ~ 2007 || x86-64 || [|AMD K10] ||
 * ~ 2011 || x86-64 || [|Bulldozer] ||
 * ~ 2012 || x86-64 || [|Piledriver] ||
 * ~ 2014 || x86-64 || [|Steamroller] ||
 * ~ 2015 || x86-64 || [|Excavator] ||
 * ~ 2017 || x86-64 || [|Zen] ||

=SIMD Extensions=
 * AVX (since Bulldozer)
 * AVX2 (since Excavator)
 * MMX
 * [|3DNow!]
 * SSE
 * SSE2
 * SSE3
 * SSE4
 * SSE5 (not implemented)
 * XOP (Bulldozer only)

=See also=
 * Intel
 * Microsoft

=Forum Posts=
 * [|Intel vs AMD: which does your engine prefer?] by Albert Silver, CCC, November 04, 2011 » Intel
 * [|What is your take on AMD's new processor?] by Tano-Urayoan Russi Roman, CCC, October 24, 2012
 * [|AMD's Ryzen launches March 2, outperforming Intel's Core i7] by Leo Anger, CCC, February 22, 2017
 * [|New AMD processors] by Ingo Althöfer, [|The Computer-go Archives], March 03, 2017
 * [|Ryzen Fritz Chess Benchmarks ?] by ralunger, Rybka Forum, March 03, 2017
 * [|Is anyone here already using a Ryzen 1800X processor ?] by Aloisio Ponti, CCC, March 26, 2017

=External Links=
 * [|Advanced Micro Devices from Wikipedia]
 * [|List of AMD CPU microarchitectures from Wikipedia]
 * [|AMD Corporate Website]
 * [|Welcome to AMD Developer Central | AMD's Software Developer Portal]
 * [|Intel Corp. v. Advanced Micro Devices, Inc. from Wikipedia]
 * [|AMD v. Intel from Wikipedia]
 * [|Inside AMD's Hammer: the 64-bit architecture behind the Opteron and Athlon 64] by Jon Stokes, [|ars technica], February 01, 2005
 * [|Understanding the detailed Architecture of AMD's 64 bit Core] by [|Hans de Vries], September 21, 2003
 * [|AMD Fusion from Wikipedia]
 * [|AMD releases new Ryzen processor] by Albert Silver, ChessBase News, March 03, 2017

=References= =What links here?= include page="AMD" component="backlinks" limit="120"
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