i9-12900K vs Ultra 9 285K
Full specification comparison between the Intel Core i9-12900K (2021) and the Intel Core Ultra 9 285K (2024).
Ultra 9 285K
Intel High-end
- ✓ ~8% faster on average
- ✓ More cores (24 vs 16)
- ✓ Larger L3 cache (36 MB vs 30 MB)
- ✓ Higher boost clock (5.7 vs 5.2 GHz)
- ✓ Newer (2024 vs 2021)
Verdict: The Ultra 9 285K is around 8% faster than the i9-12900K on average — a modest edge you may notice in demanding titles, but not a generational leap.
Note they use different platforms (LGA1851 vs LGA1700), so this is a motherboard decision too, not just a CPU swap.
At launch pricing, the Ultra 9 285K offers more performance per dollar, and the Ultra 9 285K 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 | i9-12900K | Ultra 9 285K |
|---|---|---|
| Family | Alder Lake | Arrow Lake |
| Socket | LGA1700 | LGA1851 |
| Release year | 2021 | 2024 |
| Est. gaming perf. | ||
| Est. multi-core perf. | ||
| Est. single-core perf. | ||
| Cores | ||
| Threads | ||
| Max boost clock | ||
| L3 cache | ||
| TDP (base) | ||
| Integrated graphics | UHD 770 | Intel Graphics |
| Launch MSRP |
Green bars mark the better value in each row (for power and price, lower wins).
Frequently asked questions
Is the Ultra 9 285K better than the i9-12900K?
Yes — based on aggregated benchmark data, the Ultra 9 285K is about 8% faster than the i9-12900K on average.
How much faster is the Ultra 9 285K than the i9-12900K?
Roughly 8% on average in gaming workloads. The gap varies by title, resolution and settings.
Which processor is better value?
Comparing launch prices, the Ultra 9 285K delivers more performance per dollar. Check current street prices, as market pricing often shifts the value equation.