SiSoftware released early tests performed with the Ryzen 7 5800X (8 cores / 16 threads) and Ryzen 5 5600X (6 cores / 12 threads). Keep in mind that all these benchmarks do not include anything gaming, they are samples in arithmetic, cryptography, financial / scientific analysis, image processing, etc.
AMD Ryzen 5 5600X
Based on testing by SiSoftware, the Ryzen 5 5600X is between 15% and 40% faster than the Ryzen 5 3600X (Zen 2). The site claims that the 6-core Zen 3 CPU was even able to outperform the 8-core Intel i9-9900K processors, something really surprising.
SiSoftware Conclusions: “The 6-core AMD Zen3 CPU is 15-40% faster than the Zen2 CPU in all kinds of algorithms. Therefore, we will give it a score of 9 out of 10 points ”.
“Even though there are no major architectural changes (except redesign in the 8-core CCX which involves a unified L3 cache) over Zen2, Zen3 manages to be quite a bit faster through the heavily vectorized SIMD algorithms, although in the case of the 6-core model (aka Ryzen 5 5600X) due to its almost identical Turbo compared to the old Zen2 (Ryzen 5 3600XT) it cannot beat it as solidly as the other brothers as we have seen in the other reviews. The performance of the Zen2 3000 XT CPUs is too good! “
AMD Ryzen 7 5800X
As far as the Ryzen 7 5800X is concerned, SiSoftware expresses the following: the Zen 3 8-core CPU works like a Zen 2 12-core CPU (Ryzen 9 3900X), which leaves the i9-10900K off the track. The 5800X performs between 25% and 40% more than the 3700X .
SiSoftware Conclusions: The Zen3 8-core Zen3 CPU is between 25 and 40 percent faster than Zen2 in all kinds of algorithms. There is no choice but to give it a score of 10/10 in total. Naturally also beating the competition even with AVX512 and more cores (eg SKL-X 10 cores). Even the streaming algorithms (in memory) improve by more than 20 percent. We certainly didn’t expect the performance to be that good. “