Ryzen 9 3900X vs Ryzen 9 9900X
Full specification comparison between the AMD Ryzen 9 3900X (2019) and the AMD Ryzen 9 9900X (2024).
Ryzen 9 9900X
AMD Enthusiast
- ✓ ~48% faster on average
- ✓ Higher boost clock (5.6 vs 4.6 GHz)
- ✓ Has integrated graphics
- ✓ Newer (2024 vs 2019)
- ✓ Better performance per dollar
Verdict: The Ryzen 9 9900X is roughly 48% faster than the Ryzen 9 3900X on average — a clear, noticeable performance advantage.
Note they use different platforms (AM5 vs AM4), so this is a motherboard decision too, not just a CPU swap.
At launch pricing, the Ryzen 9 9900X offers more performance per dollar, and the Ryzen 9 9900X is the more power-efficient chip.
Estimated performance
Estimated average 1080p gaming performance compiled from publicly available benchmark data. Individual games vary.
Specs side by side
| Specification | Ryzen 9 3900X | Ryzen 9 9900X |
|---|---|---|
| Family | Zen 2 | Zen 5 |
| Socket | AM4 | AM5 |
| Release year | 2019 | 2024 |
| Est. gaming perf. | ||
| Est. multi-core perf. | ||
| Est. single-core perf. | ||
| Cores | ||
| Threads | ||
| Max boost clock | ||
| L3 cache | ||
| TDP (base) | ||
| Integrated graphics | None | Radeon Graphics |
| Launch MSRP |
Green bars mark the better value in each row (for power and price, lower wins).
Frequently asked questions
Is the Ryzen 9 9900X better than the Ryzen 9 3900X?
Yes — based on aggregated benchmark data, the Ryzen 9 9900X is about 48% faster than the Ryzen 9 3900X on average.
How much faster is the Ryzen 9 9900X than the Ryzen 9 3900X?
Roughly 48% on average in gaming workloads. The gap varies by title, resolution and settings.
Which processor is better value?
Comparing launch prices, the Ryzen 9 9900X delivers more performance per dollar. Check current street prices, as market pricing often shifts the value equation.