Intel
Core Ultra 9 285K
Arrow Lake · 24C · 5.7 GHz · LGA1851
90
/ 100
From $589
VS
AMD Ryzen 9 9900X3D wins by 3
AMD
AMD Ryzen 9 9900X3D
Zen 5 · 12C/24T · 3D V-Cache
93
/ 100
From $599
Specdex verdict
AMD Ryzen 9 9900X3D takes it — here’s why.
In our weighted Specdex score, Core Ultra 9 285K lands at 90 and AMD Ryzen 9 9900X3D at 93. That puts AMD Ryzen 9 9900X3D ahead by 3 points — a narrow margin driven mostly by its strengths in the categories below.
Pick Core Ultra 9 285K if…
- ✓Much lower power than 14900K
- ✓Strong productivity
- ✓New LGA1851 platform
Pick AMD Ryzen 9 9900X3D if…
- ✓12C V-Cache vs 9800X3D 8C
- ✓Strong productivity + gaming combo
- ✓AM5 platform longevity
Core Ultra 9 285K 90
vs 93 AMD Ryzen 9 9900X3D
Score breakdown
Core Ultra 9 285K
90 single 92
multi 94
gaming 85
efficiency 90
cpu 0
productivity 0
AMD Ryzen 9 9900X3D
93 single 0
multi 0
gaming 96
efficiency 86
cpu 96
productivity 92
Specs side-by-side
| Spec | Core Ultra 9 285K | AMD Ryzen 9 9900X3D |
|---|---|---|
| Cores | 24 (8P+16E) | — |
| Threads | 24 | — |
| Base clock | 3.7 GHz | — |
| Boost clock | 5.7 GHz | — |
| L3 cache | 36 MB | ▲ 128 MB (64 + 64 MB stacked) |
| TDP | 125 W (PL1) / 250 W (PL2) | 120 W |
| Socket | LGA1851 | AM5 |
| Process | TSMC N3B | TSMC 4nm |
| iGPU | Intel Graphics (Xe-LPG) | — |
| Cores / threads | — | 12 / 24 |
| Base / boost | — | 4.4 / 5.5 GHz |
Core Ultra 9 285K
Pros
- +Much lower power than 14900K
- +Strong productivity
- +New LGA1851 platform
Cons
- −Gaming regresses vs 14900K in some titles
- −No hyper-threading
- −DDR5 only
AMD Ryzen 9 9900X3D
Pros
- +12C V-Cache vs 9800X3D 8C
- +Strong productivity + gaming combo
- +AM5 platform longevity
Cons
- −Cross-CCD scheduling tax in some titles
- −Power tuning quirky
- −Premium over 9800X3D
FAQ: Core Ultra 9 285K vs AMD Ryzen 9 9900X3D
Which is better, Core Ultra 9 285K or AMD Ryzen 9 9900X3D? +
AMD Ryzen 9 9900X3D scores 93 on our weighted rubric — ahead by 3. Your best pick depends on the sub-scores above.
Is Core Ultra 9 285K worth the price? +
At $589, Core Ultra 9 285K delivers a Specdex score of 90 — strongest in multi.
Is AMD Ryzen 9 9900X3D worth the price? +
At $599, AMD Ryzen 9 9900X3D delivers a Specdex score of 93 — strongest in cpu.
Does Core Ultra 9 285K or AMD Ryzen 9 9900X3D last longer? +
Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.