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SiSoftware's Executive Summary:
Zen3 (X, 8-core) is ~25-40% faster than Zen2 (X, 8-core) across all kinds of algorithms. We have to give it 10/10 overall!
Despite no major architectural changes over Zen2 (except larger 8-core single CCX layout and thus unified L3 cache), Zen3 manages to be quite a bit faster across legacy and heavily vectorised SIMD algorithms: it beats the competition even with AVX512 and more cores (e.g. 10-core SKL-X). Even streaming algorithms (memory-bound) improve over 20%. We certainly did not expect performance to be this good.
In effect, it is like getting 50% more cores – 8-core Zen3 performs like a 12-core Zen2 (e.g. 3900X) – and thus even a 10-core 10900K cannot compete. Considering you can just “pop it” into an existing AM4 mainboard (requires a BIOS update to support it) it is a massive upgrade from say, original Zen1/Zen+.
