Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Intel - Core Ultra 9 285H | AMD - Ryzen 9 9950X |
|---|---|---|
| L3 cache | 24 MB | 64 MB |
| TDP | 45 W | 170 W |
| Cinebench R23 (multi) | 21500 | 42500 |
| Boost clock | 5.4 GHz | 5.7 GHz |
Between the Core Ultra 9 285H and Ryzen 9 9950X, the Core Ultra 9 285H comes out ahead in tdp, while the Ryzen 9 9950X wins on l3 cache / cinebench r23 (multi). Overall, the Core Ultra 9 285H scores 51.2 and the Ryzen 9 9950X scores 61.1 on our Mars Score.
Which should you buy?
The Ryzen 9 9950X is the clear pick on raw spec strength, leading by 9.9 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the Core Ultra 9 285H if you care most about tdp. The biggest gaps in its favor are tdp. The single most decisive one: TDP — 125.00 W less. 45 vs 170.
Pick the Ryzen 9 9950X if you push the hardware — gaming, on-device AI, heavy multitasking — and the extra compute headroom is worth the trade-offs. Its strongest claims are l3 cache, cinebench r23 (multi), boost clock. The single most decisive one: L3 cache — 166.67% more. 64 MB vs 24 MB.
Both ship with comparable cores, so those specs do not separate the two — focus on the differences below.
Bottom line: the Ryzen 9 9950X is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Which should you buy: Intel - Core Ultra 9 285H or AMD - Ryzen 9 9950X?
AMD - Ryzen 9 9950X leads the current Mars Score by 9.9 points.The more useful decision is the trade-off behind that result: compare boost clock, tdp against the way you will actually use the product.
Choose Intel - Core Ultra 9 285H if…
Intel - Core Ultra 9 285H has the measurable edge on tdp w.
Choose AMD - Ryzen 9 9950X if…
AMD - Ryzen 9 9950X has the measurable edge on cache l3 mb, cinebench r23 multi, boost clock ghz.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Intel - Core Ultra 9 285H wins
- ▲TDP — 125.00 W less. 45 vs 170.
Why AMD - Ryzen 9 9950X wins
- ▲L3 cache — 166.67% more. 64 MB vs 24 MB.
- ▲Cinebench R23 (multi) — 97.67% more. 42500 vs 21500.
- ▲Boost clock — 5.56% more. 5.7 GHz vs 5.4 GHz.
Spec comparison
Cores
| Spec | Intel - Core Ultra 9 285H | AMD - Ryzen 9 9950X |
|---|---|---|
| Coresⓘ | 16 | 16 |
| Threadsⓘ | 16 | 32lead |
| Base clockⓘ | 2.9 GHz | 4.3 GHzlead |
| Boost clockⓘ | 5.4 GHz | 5.7 GHzlead |
| L3 cacheⓘ | 24 MB | 64 MBlead |
Platform
| Spec | Intel - Core Ultra 9 285H | AMD - Ryzen 9 9950X |
|---|---|---|
| Socketⓘ | BGA | AM5 |
| TDPⓘ | 45 Wlead | 170 W |
| Integrated graphicsⓘ | true | true |
| DDR5ⓘ | true | true |
Benchmarks
| Spec | Intel - Core Ultra 9 285H | AMD - Ryzen 9 9950X |
|---|---|---|
| Cinebench R23 (multi)ⓘ | 21500 | 42500lead |
| Cinebench R23 (single)ⓘ | 2050 | 2270lead |