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 7 7800X3D |
|---|---|---|
| L3 cache | 24 MB | 96 MB |
| Cores | 16 | 8 |
| TDP | 45 W | 120 W |
| Cinebench R23 (multi) | 21500 | 18000 |
| Boost clock | 5.4 GHz | 5.0 GHz |
Between the Core Ultra 9 285H and Ryzen 7 7800X3D, the Core Ultra 9 285H comes out ahead in cores / tdp, while the Ryzen 7 7800X3D wins on l3 cache. Overall, the Core Ultra 9 285H scores 51.2 and the Ryzen 7 7800X3D scores 49.8 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (51.2 vs 49.8). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the Core Ultra 9 285H if you push the hardware — gaming, on-device AI, heavy multitasking — and the extra compute headroom is worth the trade-offs. The biggest gaps in its favor are cores, tdp, cinebench r23 (multi), among others. The single most decisive one: Cores — 100.00% more. 16 vs 8.
Pick the Ryzen 7 7800X3D if you care most about l3 cache. Its strongest claims are l3 cache. The single most decisive one: L3 cache — 300.00% more. 96 MB vs 24 MB.
There are no meaningful ties on the headline specs — every popular-comparison metric has a winner.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: Intel - Core Ultra 9 285H or AMD - Ryzen 7 7800X3D?
Intel - Core Ultra 9 285H leads the current Mars Score by 1.4 points.The more useful decision is the trade-off behind that result: compare cores, 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 core count, tdp w, cinebench r23 multi.
Choose AMD - Ryzen 7 7800X3D if…
AMD - Ryzen 7 7800X3D has the measurable edge on cache l3 mb.
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
- ▲Cores — 100.00% more. 16 vs 8.
- ▲TDP — 75.00 W less. 45 vs 120.
- ▲Cinebench R23 (multi) — 19.44% more. 21500 vs 18000.
- ▲Boost clock — 8.00% more. 5.4 GHz vs 5.0 GHz.
Why AMD - Ryzen 7 7800X3D wins
- ▲L3 cache — 300.00% more. 96 MB vs 24 MB.
Spec comparison
Cores
| Spec | Intel - Core Ultra 9 285H | AMD - Ryzen 7 7800X3D |
|---|---|---|
| Coresⓘ | 16lead | 8 |
| Threadsⓘ | 16 | 16 |
| Base clockⓘ | 2.9 GHz | 4.2 GHzlead |
| Boost clockⓘ | 5.4 GHzlead | 5.0 GHz |
| L3 cacheⓘ | 24 MB | 96 MBlead |
Platform
| Spec | Intel - Core Ultra 9 285H | AMD - Ryzen 7 7800X3D |
|---|---|---|
| Socketⓘ | BGA | AM5 |
| TDPⓘ | 45 Wlead | 120 W |
| Integrated graphicsⓘ | true | true |
| DDR5ⓘ | true | true |
Benchmarks
| Spec | Intel - Core Ultra 9 285H | AMD - Ryzen 7 7800X3D |
|---|---|---|
| Cinebench R23 (multi)ⓘ | 21500lead | 18000 |
| Cinebench R23 (single)ⓘ | 2050lead | 1880 |