Ultra 9 285K vs Ryzen 9 9900X
Full specification comparison between the Intel Core Ultra 9 285K (2024) and the AMD Ryzen 9 9900X (2024).
Ultra 9 285K
Intel High-end
- ✓ More cores (24 vs 12)
- ✓ Higher boost clock (5.7 vs 5.6 GHz)
Ryzen 9 9900X
AMD Enthusiast
- ✓ Larger L3 cache (64 MB vs 36 MB)
- ✓ Lower power draw (120 W vs 125 W)
- ✓ Cheaper at launch ($499 vs $589)
- ✓ Better performance per dollar
Verdict: The Ryzen 9 9900X and Ultra 9 285K deliver essentially the same level of performance — the difference is within a few percent and won't be noticeable in real use. The decision comes down to price, power draw and features.
For gaming the Ryzen 9 9900X leads, but the Ultra 9 285K pulls ahead in heavily multi-threaded work like rendering, compiling and video export thanks to its stronger multi-core throughput.
Note they use different platforms (AM5 vs LGA1851), 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 | Ultra 9 285K | Ryzen 9 9900X |
|---|---|---|
| Family | Arrow Lake | Zen 5 |
| Socket | LGA1851 | AM5 |
| Release year | 2024 | 2024 |
| Est. gaming perf. | ||
| Est. multi-core perf. | ||
| Est. single-core perf. | ||
| Cores | ||
| Threads | ||
| Max boost clock | ||
| L3 cache | ||
| TDP (base) | ||
| Integrated graphics | Intel Graphics | 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 Ultra 9 285K?
They perform almost identically (within ~2%). Choose based on price, power consumption and platform rather than raw speed.
How much faster is the Ryzen 9 9900X than the Ultra 9 285K?
Roughly 2% 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.