36 PCWorld AUGUST 2019REVIEWS RYZEN^3000
size and speed performance. How a CPU can
deal with out-of-order execution also helps.
Decompression performance is largely
reliant on integer performance and how well
the CPU handles branch mispredictions.
We run 7Zip 19.00 using the default
dictionary size of 32MB. We also run the
amount of threads equal to the CPU’s available
threads, as well as testing single-thread.In single-threaded performance, the
5GHz Core i9, with its roughly 8-percent
clock advantage over the 4.6GHz Ryzen 9,
yields about a 7.5-percent performance
advantage in the compression portion. In
multi-threaded performance, we see the
Ryzen 9 gain a 36-percent advantage over
the Core i9.
Moving over to the decompression test,
the gap between the Core i9 and Ryzen 9
closes to 5 percent in favor of the Intel CPU.
When you factor in all of the CPU coresThis WinRAR result can be seen as good or bad in
some ways. WinRAR has traditionally favored Intel
CPUs, as we can see from the dismal performance
of the Ryzen 7 2700X. The fact that the Ryzen 9
3900X is just about tied with the Core i9 can be
seen as an improvement.Ryzen 9 3900X
Zen 2 (12/24)
Core i9-9900K Coffee Lake R (8/16)Ryzen 7 2700X Zen+ (8/16)WinRAR 5.71 nT
MCE/PBO OffLONGER BARS INDICATE BETTER PERFORMANCE28,40429,63013,281The Ryzen 9 3900X actually offers up a very
decent uplift over the previous Ryzen 7 2700X.Ryzen 9 3900X
Zen 2 (12/24)
Core i9-9900K Coffee Lake R (8/16)Ryzen 7 2700X Zen+ (8/16)WinRAR 5.71 1T
MCE/PBO OffLONGER BARS INDICATE BETTER PERFORMANCE2,9963,3101,815The single-threaded performance in 7Zip slightly
favors the Core i9 chip.Ryzen 9 3900X Zen 2 (12/24)Core i9-9900K
Coffee Lake R (8/16)
Ryzen 7 2700X
Zen+ (8/16)7-Zip 19.00
Compressing 1T (MIPS)LONGER BARS INDICATE BETTER PERFORMANCE6,8957, 4 2 76,590Multi-threaded performance sees the Ryzen 9
dominate easily.Ryzen 9 3900X Zen 2 (12/24)Core i9-9900K
Coffee Lake R (8/16)
Ryzen 7 2700X
Zen+ (8/16)7-Zip 19.00
Compressing nT (MIPS)LONGER BARS INDICATE BETTER PERFORMANCE83,45757,98350,241