AMD Ryzen 9 7950X & Ryzen 7 7700X ‘Zen 4’ Review

1. Ryzen 7000 - Introducing Zen 4 and AM52. A Closer Look - AMD's Zen 4 Architecture3. A Closer Look - The AM5 Platform4. Testing Methodology5. Operating Clocks6. CPU Tests: Blender & Cinebench7. CPU Tests: Handbrake & 7-Zip8. Memory Tests: Memory Bandwidth and Latency9. Synthetic Gaming: 3DMark10. Gaming 1080p: ACV, BL3, F1 202111. Gaming 1080p: FC6, Hitman 3, SotTR, WDL12. Gaming 1080p - Relative Performance Summary13. Gaming 1440p - ACV, BL3, F1 2021, FC614. Gaming 1440p - Hitman 3, SotTR, WDL15. Gaming 1440p - Relative Performance Summary16. Technical: Power Draw17. Technical: Temperatures18. Overclocking19. Perf. Per Watt and £20. Zen 4 vs Zen 3 - Clock-for-Clock Comparison21. RDNA 2 Integrated GPU22. Closing Thoughts23. View All Pages

We wanted to look at a clock-for-clock comparison to make a quick assessment on the Zen 4 architectural performance versus Zen 3. As such, we glued both 16-core chips – the Ryzen 9 7950X and Ryzen 9 5950X – to 4.45GHz and ran a few benchmarks.

7-Zip compression was particularly favourable towards the new 16-core part with a 23% relative performance lead, but this will have also been skewed heavily by higher-bandwidth DDR5 memory.

7-Zip decompression was far less favourable and doesn’t seem to put forth a particularly high uptick for Zen 4.

Rendering seldom places significant emphasis on memory bandwidth in Blender. As such, the 18% clock-for-clock performance lead observed by the new 16-core processor is a pretty reasonable depiction of the Zen 4 vs Zen 3 improvements.

And Cinebench R23 nT with a 12% increase emphasises this Zen 4 vs Zen 3 comparison further.

The clock-for-clock comparison between Zen 3 and Zen 4 is interesting. Clearly, new, high-bandwidth DDR5 memory skews the results a little. But our testing does indicate that the new Ryzen 9 7950X is double-digit percentage points better than the Ryzen 9 5950X it replaces in tasks such as multi-core rendering.

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