AMD

From Chessprogramming wiki
Jump to: navigation, search

Home * Organizations * AMD

AMD headquarters, Sunnyvale, California [1]

Advanced Micro Devices, Inc. or 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 [2] . 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 Ryzens prior to Zen 3 micro-architecture released in November 2020 have problems with BMI2 performance [3] [4] , 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 [5] .

Sponsoring

Photos

x86 Architectures

[10]

Year Architecture
1991 x86 Am386
1993 Am486
1996 AMD K5
1997 AMD K6
1998 AMD K6-2
1999 AMD K7 Athlon
2003 x86-64 AMD K8 Athlon 64, Opteron
2007 AMD K10
2011 Bulldozer
2012 Piledriver
2014 Steamroller
2015 Excavator
2017 Zen
2018 Zen+
2019 Zen 2
2020 Zen 3

SIMD Extensions

General Purpose Extensions

See also

Forum Posts

2010 ...

2015 ...

Re: Ryzen 2 and BMI2? by Joost Buijs, CCC, May 18, 2020 » AVX2, BMI2

2020 ...

External Links

References