Intel - Core Ultra 9 285K vs AMD - Ryzen AI 9 HX 395+
Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Intel - Core Ultra 9 285K | AMD - Ryzen AI 9 HX 395+ |
|---|---|---|
| L3 cache | 36 MB | 64 MB |
| TDP | 125 W | 55 W |
| Cinebench R23 (multi) | 42800 | 27500 |
| Cores | 24 | 16 |
| Boost clock | 5.7 GHz | 5.1 GHz |
Between the Core Ultra 9 285K and Ryzen AI 9 HX 395+, the Core Ultra 9 285K comes out ahead in cinebench r23 (multi) / cores, while the Ryzen AI 9 HX 395+ wins on l3 cache / tdp. Overall, the Core Ultra 9 285K scores 60.9 and the Ryzen AI 9 HX 395+ scores 54.3 on our Mars Score.
Which should you buy?
The Core Ultra 9 285K edges ahead on the Mars Score (60.9 vs 54.3), but the 6.6-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Core Ultra 9 285K 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 cinebench r23 (multi), cores, boost clock. The single most decisive one: Cinebench R23 (multi) — 55.64% more. 42800 vs 27500.
Pick the Ryzen AI 9 HX 395+ if you care most about l3 cache / tdp. Its strongest claims are l3 cache, tdp. The single most decisive one: L3 cache — 77.78% more. 64 MB vs 36 MB.
There are no meaningful ties on the headline specs — every popular-comparison metric has a winner.
Bottom line: the Core Ultra 9 285K 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 285K or AMD - Ryzen AI 9 HX 395+?
Intel - Core Ultra 9 285K leads the current Mars Score by 6.6 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 285K if…
Intel - Core Ultra 9 285K has the measurable edge on cinebench r23 multi, core count, boost clock ghz.
Choose AMD - Ryzen AI 9 HX 395+ if…
AMD - Ryzen AI 9 HX 395+ has the measurable edge on cache l3 mb, tdp w.
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 285K wins
- ▲Cinebench R23 (multi) — 55.64% more. 42800 vs 27500.
- ▲Cores — 50.00% more. 24 vs 16.
- ▲Boost clock — 11.76% more. 5.7 GHz vs 5.1 GHz.
Why AMD - Ryzen AI 9 HX 395+ wins
- ▲L3 cache — 77.78% more. 64 MB vs 36 MB.
- ▲TDP — 70.00 W less. 55 vs 125.
Spec comparison
Cores
| Spec | Intel - Core Ultra 9 285K | AMD - Ryzen AI 9 HX 395+ |
|---|---|---|
| Coresⓘ | 24lead | 16 |
| Threadsⓘ | 24 | 32lead |
| Base clockⓘ | 3.7 GHzlead | 3.0 GHz |
| Boost clockⓘ | 5.7 GHzlead | 5.1 GHz |
| L3 cacheⓘ | 36 MB | 64 MBlead |
Platform
| Spec | Intel - Core Ultra 9 285K | AMD - Ryzen AI 9 HX 395+ |
|---|---|---|
| Socketⓘ | LGA1851 | FP11 |
| TDPⓘ | 125 W | 55 Wlead |
| Integrated graphicsⓘ | true | true |
| DDR5ⓘ | true | true |
Benchmarks
| Spec | Intel - Core Ultra 9 285K | AMD - Ryzen AI 9 HX 395+ |
|---|---|---|
| Cinebench R23 (multi)ⓘ | 42800lead | 27500 |
| Cinebench R23 (single)ⓘ | 2230lead | 2050 |