i9-9900K vs Ryzen 7 5800X
Full specification comparison between the Intel Core i9-9900K (2018) and the AMD Ryzen 7 5800X (2020).
i9-9900K
Intel Entry-level
- ✓ Higher boost clock (5.0 vs 4.7 GHz)
- ✓ Has integrated graphics
- ✓ Lower power draw (95 W vs 105 W)
Ryzen 7 5800X
AMD Mid-range
- ✓ ~17% faster on average
- ✓ Larger L3 cache (32 MB vs 16 MB)
- ✓ Cheaper at launch ($449 vs $488)
- ✓ Newer (2020 vs 2018)
- ✓ Better performance per dollar
Verdict: The Ryzen 7 5800X is roughly 17% faster than the i9-9900K on average — a clear, noticeable performance advantage.
Note they use different platforms (AM4 vs LGA1151), so this is a motherboard decision too, not just a CPU swap.
At launch pricing, the Ryzen 7 5800X offers more performance per dollar, and the Ryzen 7 5800X 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 | i9-9900K | Ryzen 7 5800X |
|---|---|---|
| Family | Coffee Lake Refresh | Zen 3 |
| Socket | LGA1151 | AM4 |
| Release year | 2018 | 2020 |
| Est. gaming perf. | ||
| Est. multi-core perf. | ||
| Est. single-core perf. | ||
| Cores | ||
| Threads | ||
| Max boost clock | ||
| L3 cache | ||
| TDP (base) | ||
| Integrated graphics | UHD 630 | None |
| Launch MSRP |
Green bars mark the better value in each row (for power and price, lower wins).
Frequently asked questions
Is the Ryzen 7 5800X better than the i9-9900K?
Yes — based on aggregated benchmark data, the Ryzen 7 5800X is about 17% faster than the i9-9900K on average.
How much faster is the Ryzen 7 5800X than the i9-9900K?
Roughly 17% on average in gaming workloads. The gap varies by title, resolution and settings.
Which processor is better value?
Comparing launch prices, the Ryzen 7 5800X delivers more performance per dollar. Check current street prices, as market pricing often shifts the value equation.