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Created page with "'''Home * Organizations * AMD''' FILE:Amdheadquarters.jpg|border|right|thumb| AMD headquarters, [https://en.wikipedia.org/wiki/Sunnyvale,_California Sunn..."
'''[[Main Page|Home]] * [[Organizations]] * AMD'''

[[FILE:Amdheadquarters.jpg|border|right|thumb| AMD headquarters, [https://en.wikipedia.org/wiki/Sunnyvale,_California Sunnyvale, California] <ref>AMD headquarters, [https://en.wikipedia.org/wiki/Sunnyvale,_California Sunnyvale, California], from [https://en.wikipedia.org/wiki/Advanced_Micro_Devices Advanced Micro Devices from Wikipedia]</ref> ]]

'''Advanced Micro Devices, Inc.''' or '''AMD''',<br/>
an American multinational [https://en.wikipedia.org/wiki/Semiconductor_industry semiconductor] company based in [https://en.wikipedia.org/wiki/Sunnyvale,_California 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 [https://en.wikipedia.org/wiki/Graphics_processing_unit graphics processing] units <ref>[https://en.wikipedia.org/wiki/Advanced_Micro_Devices Advanced Micro Devices from Wikipedia]</ref> .
In 2003, AMD launched the [https://en.wikipedia.org/wiki/Athlon_64 Athlon 64] (Hammer, AMD64, K8) and pioneered the [[x86-64]] instruction set. Until Intel introduced the [https://en.wikipedia.org/wiki/Intel_Core_2 Core 2] [https://en.wikipedia.org/wiki/Microarchitecture microarchitecture] in 2006, AMD64 was the dominating architecture for computer chess in the 2000s. With the [https://en.wikipedia.org/wiki/Zen_(microarchitecture) Zen] micro-architecture and the release of the [https://en.wikipedia.org/wiki/Ryzen Ryzen] processor in early 2017, it seems that AMD can recover lost ground.
However, early Ryzen's [[BMI2]] performance is worse <ref>[http://rybkaforum.net/cgi-bin/rybkaforum/topic_show.pl?tid=32016 Ryzen Fritz Chess Benchmarks ?] by ralunger, [[Computer Chess Forums|Rybka Forum]], March 03, 2017</ref> <ref>[https://www.reddit.com/r/Amd/comments/60i6er/ryzen_and_bmi2_strange_behavior_and_high_latencies/ Ryzen and BMI2: Strange behavior and high latencies] by DonnieTinyHands, [https://en.wikipedia.org/wiki/Reddit Reddit], March 20, 2017</ref> , in particular using [[BMI2#PEXT|BMI2 PEXT]] in chess programs - one should conditionally compile using [[Magic Bitboards|magic bitboards]] instead of [[BMI2#PEXTBitboards|PEXT bitboards]], otherwise preferable for compatible [[Intel]] processors <ref>[http://www.talkchess.com/forum/viewtopic.php?t=66737&start=4 Re: Komodo 11.3] by [[Mark Lefler]], [[CCC]], March 04, 2018 » [[BMI2#PEXT|BMI2 PEXT]], [[Komodo#11|Komodo 11.3]]</ref> .

=Sponsoring=
* [[WMCCC 1997]]
* [[BELCT 2001]]

=Photos=
[[FILE:JollyBannermann1997.jpg|none|border|text-bottom|640px|link=http://www.thorstenczub.de/pariswm97.html]]
[[Christophe Jolly]] and [[Walter Bannerman]], Paris [[WMCCC 1997]] <ref>[http://www.thorstenczub.de/pariswm97.html Paris - Trier - Lünen], Photos [[WMCCC 1997]] by [[Thorsten Czub]]</ref>

[[FILE:anand1.jpg|none|border|text-bottom|640px|link=http://www.top-5000.nl/int/aaron.htm]]
[[Rebel]] vs [https://en.wikipedia.org/wiki/Viswanathan_Anand Viswanathan Anand], [https://en.wikipedia.org/wiki/Ischia Ischia], July 1998 - back of [[Ed Schroder|Ed Schröder]] and [[Jeroen Noomen]] <ref>[http://www.top-5000.nl/authors/rebel/chess_5.htm REBEL vs GM Vishy Anand]</ref> <ref>[[Jeroen Noomen]], [[Ed Schroder|Ed Schröder]] ('''1998'''). ''Anand versus Rebel 10 exp.'' [[ICGA Journal#21_3|ICCA Journal, Vol. 21, No. 3]]</ref>

[[FILE:4.01-JochenRoland.jpg|none|border|text-bottom|640px|link=http://www.quarkchess.de/belct/body_index.html]]
[[Jochen Peussner]] and [[Roland Pfister]], [[BELCT 2001]] <ref>[http://www.quarkchess.de/belct/ BELCT 2001 Berlin is worth a trip!] Photos by [[Thomas Mayer]]</ref>

=x86 Architectures=
<ref>[https://en.wikipedia.org/wiki/List_of_AMD_microprocessors List of AMD microprocessors from Wikipedia]</ref>
{| class="wikitable"
|-
! Year
! colspan="2" | Architecture
|-
! 1991
| rowspan="6" | [[x86]]
| [https://en.wikipedia.org/wiki/Am386 Am386]
|-
! 1993
| [https://en.wikipedia.org/wiki/Am486 Am486]
|-
! 1996
| [https://en.wikipedia.org/wiki/AMD_K5 AMD K5]
|-
! 1997
| [https://en.wikipedia.org/wiki/AMD_K6 AMD K6]
|-
! 1998
| [https://en.wikipedia.org/wiki/AMD_K6-2 AMD K6-2]
|-
! 1999
| [https://en.wikipedia.org/wiki/Athlon AMD K7 Athlon]
|-
! 2003
| rowspan="7" | [[x86-64]]
| [https://en.wikipedia.org/wiki/AMD_K8 AMD K8 Athlon 64, Opteron]
|-
! 2007
| [https://en.wikipedia.org/wiki/AMD_10h AMD K10]
|-
! 2011
| [https://en.wikipedia.org/wiki/Bulldozer_%28microarchitecture%29 Bulldozer]
|-
! 2012
| [https://en.wikipedia.org/wiki/AMD_Fusion#Piledriver Piledriver]
|-
! 2014
| [https://en.wikipedia.org/wiki/Steamroller_%28microarchitecture%29 Steamroller]
|-
! 2015
| [https://en.wikipedia.org/wiki/Excavator_%28microarchitecture%29 Excavator]
|-
! 2017
| [https://en.wikipedia.org/wiki/Zen_(microarchitecture) Zen]
|}

=SIMD Extensions=
* [[AVX]] (since Bulldozer)
* [[AVX2]] (since Excavator)
* [[MMX]]
* [https://en.wikipedia.org/wiki/3DNow! 3DNow!]
* [[SSE]]
* [[SSE2]]
* [[SSE3]]
* [[SSE4]]
* [[SSE5]] (not implemented)
* [[XOP]] (Bulldozer only)

=General Purpose Extensions=
* [[BMI1|BMI]]
* [[TBM]]

=See also=
* [[Intel]]
* [[Microsoft]]

=Forum Posts=
* [http://www.talkchess.com/forum/viewtopic.php?t=40996 Intel vs AMD: which does your engine prefer?] by [[Albert Silver]], [[CCC]], November 04, 2011 » [[Intel]]
* [http://www.talkchess.com/forum/viewtopic.php?t=45707 What is your take on AMD's new processor?] by Tano-Urayoan Russi Roman, [[CCC]], October 24, 2012
* [http://www.talkchess.com/forum/viewtopic.php?t=63246 AMD's Ryzen launches March 2, outperforming Intel's Core i7] by Leo Anger, [[CCC]], February 22, 2017 <ref>[https://en.wikipedia.org/wiki/Ryzen Ryzen from Wikipedia]</ref>
* [https://groups.google.com/d/msg/computer-go-archive/mXE2UsBDeyA/ljUckKn-AgAJ New AMD processors] by [[Ingo Althöfer]], [http://computer-go.org/pipermail/computer-go/ The Computer-go Archives], March 03, 2017
* [http://rybkaforum.net/cgi-bin/rybkaforum/topic_show.pl?tid=32016 Ryzen Fritz Chess Benchmarks ?] by ralunger, [[Computer Chess Forums|Rybka Forum]], March 03, 2017
* [http://www.talkchess.com/forum/viewtopic.php?t=63564 Is anyone here already using a Ryzen 1800X processor ?] by Aloisio Ponti, [[CCC]], March 26, 2017

=External Links=
* [https://en.wikipedia.org/wiki/Advanced_Micro_Devices Advanced Micro Devices from Wikipedia]
* [https://en.wikipedia.org/wiki/List_of_AMD_CPU_microarchitectures List of AMD CPU microarchitectures from Wikipedia]
* [https://en.wikipedia.org/wiki/Intel_Corp._v._Advanced_Micro_Devices,_Inc. Intel Corp. v. Advanced Micro Devices, Inc. from Wikipedia]
* [https://en.wikipedia.org/wiki/Advanced_Micro_Devices,_Inc._v._Intel_Corp. Advanced Micro Devices, Inc. v. Intel Corp. from Wikipedia]
* [https://en.wikipedia.org/wiki/AMD_Accelerated_Processing_Unit AMD Accelerated Processing Unit from Wikipedia]
* [http://www.amd.com/ AMD Corporate Website]
* [https://arstechnica.com/features/2005/02/amd-hammer-1/ Inside AMD's Hammer: the 64-bit architecture behind the Opteron and Athlon 64] by Jon Stokes, [http://arstechnica.com/index.ars ars technica], February 01, 2005
* [http://chip-architect.com/news/2003_09_21_Detailed_Architecture_of_AMDs_64bit_Core.html Understanding the detailed Architecture of AMD's 64 bit Core] by [http://www.chip-architect.com/ Hans de Vries], September 21, 2003
* [http://en.chessbase.com/post/amd-releases-new-ryzen-processor AMD releases new Ryzen processor] by [[Albert Silver]], [[ChessBase|ChessBase News]], March 03, 2017

=References=
<references />
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