i9-11900K vs Ryzen 9 5900X
Full specification comparison between the Intel Core i9-11900K (2021) and the AMD Ryzen 9 5900X (2020).
i9-11900K
Intel Entry-level
- ✓ Higher boost clock (5.3 vs 4.8 GHz)
- ✓ Has integrated graphics
- ✓ Cheaper at launch ($539 vs $549)
- ✓ Newer (2021 vs 2020)
Ryzen 9 5900X
AMD Mid-range
- ✓ ~8% faster on average
- ✓ More cores (12 vs 8)
- ✓ Larger L3 cache (64 MB vs 16 MB)
- ✓ Lower power draw (105 W vs 125 W)
- ✓ Better performance per dollar
Verdict: The Ryzen 9 5900X is around 8% faster than the i9-11900K on average — a modest edge you may notice in demanding titles, but not a generational leap.
Note they use different platforms (AM4 vs LGA1200), so this is a motherboard decision too, not just a CPU swap.
At launch pricing, the Ryzen 9 5900X offers more performance per dollar, and the Ryzen 9 5900X 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 | i9-11900K | Ryzen 9 5900X |
|---|---|---|
| Family | Rocket Lake | Zen 3 |
| Socket | LGA1200 | AM4 |
| Release year | 2021 | 2020 |
| Est. gaming perf. | ||
| Est. multi-core perf. | ||
| Est. single-core perf. | ||
| Cores | ||
| Threads | ||
| Max boost clock | ||
| L3 cache | ||
| TDP (base) | ||
| Integrated graphics | UHD 750 | None |
| Launch MSRP |
Green bars mark the better value in each row (for power and price, lower wins).
Frequently asked questions
Is the Ryzen 9 5900X better than the i9-11900K?
Yes — based on aggregated benchmark data, the Ryzen 9 5900X is about 8% faster than the i9-11900K on average.
How much faster is the Ryzen 9 5900X than the i9-11900K?
Roughly 8% on average in gaming workloads. The gap varies by title, resolution and settings.
Which processor is better value?
Comparing launch prices, the Ryzen 9 5900X delivers more performance per dollar. Check current street prices, as market pricing often shifts the value equation.