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Stockfish chess benchmark ryzen 1800x3/19/2023 List of AMD CPU microarchitectures from Wikipedia.Zen3 supports fast PEXT aka BMI2 by Alayan Feh, CCC, November 05, 2020 » BMI2 PEXT.Will AMD RDNA2 based Radeon RX 6000 series kick butt with Lc0? by Srdja Matovic, CCC, November 01, 2020 » GPU.New AMD Zen 3 and Ryzen processors by mmt, CCC, October 09, 2020.Re: AMD Announces a Red October: Zen 3 on October 8, RDNA2 on October 28 by dragontamer5788, TechPowerUp Forum, September 9, 2020 » BMI2 PEXT.Re: Ryzen 2 and BMI2? by Joost Buijs, CCC, May 18, 2020 » AVX2, BMI2.AMD's X3D - HBM on CPU - memory wall by Srdja Matovic, CCC, March 08, 2020.PEXT/PDEP are even slower than you think on Zen by Gian-Carlo Pascutto, CCC, December 09, 2019 » BMI2 PEXT.Ryzen problems - AGAIN! by noobpwnftw, CCC, October 22, 2019.AMD BMI2 question by Leo, CCC, March 10, 2019 » BMI2.Porting Stockfish to GCN on APUs.? by Nick Pelling, FishCooking, November 18, 2018 » Stockfish.Re: Ryzen 2 and BMI2? by Joost Buijs, CCC, May 18, 2020 » AVX2, BMI2 Ryzen 2 and BMI2? by Steve Maughan, CCC, May 13, 2018 » BMI2.Re: Komodo 11.3 by Mark Lefler, CCC, March 04, 2018 » BMI2 PEXT, Komodo 11.3.Is anyone here already using a Ryzen 1800X processor ? by Aloisio Ponti, CCC, March 26, 2017.Ryzen Fritz Chess Benchmarks ? by ralunger, Rybka Forum, March 03, 2017.New AMD processors by Ingo Althöfer, The Computer-go Archives, March 03, 2017.AMD's Ryzen launches March 2, outperforming Intel's Core i7 by Leo Anger, CCC, Febru.What is your take on AMD's new processor? by Tano-Urayoan Russi Roman, CCC, October 24, 2012. ![]() Intel vs AMD: which does your engine prefer? by Albert Silver, CCC, November 04, 2011 » Intel.Jochen Peussner and Roland Pfister, BELCT 2001 x86 Architectures However, early Ryzens prior to Zen 3 micro-architecture released in November 2020 have problems with BMI2 performance, 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. With the Zen micro-architecture and the release of the Ryzen processor in early 2017, it seems that AMD can recover lost ground. Until Intel introduced the Core 2 microarchitecture in 2006, AMD64 was the dominating architecture for computer chess in the 2000s. In 2003, AMD launched the Athlon 64 (Hammer, AMD64, K8) and pioneered the x86-64 instruction set. AMD headquarters, Sunnyvale, California Īn 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.
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