Between the M4 Max (16-core) and Ryzen AI 9 HX 395+, the M4 Max (16-core) comes out ahead in tdp, while the Ryzen AI 9 HX 395+ wins on l3 cache and cores. Overall, the M4 Max (16-core) scores 50.7 and the Ryzen AI 9 HX 395+ scores 54.3 on our Mars Score.
Which should you buy?
The Ryzen AI 9 HX 395+ edges ahead on the Mars Score (50.7 vs 54.3), but the 3.6-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the M4 Max (16-core) if you care most about tdp. The biggest gaps in its favor are tdp.
Pick the Ryzen AI 9 HX 395+ if you care most about l3 cache and cores. Its strongest claims are l3 cache, cores, boost clock, among others.
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 tells you both are well-rounded; the differences are about trade-offs, not quality.
Why Apple - M4 Max (16-core) wins
- ▲TDP — 10.00 W less. 45 vs 55.
Why AMD - Ryzen AI 9 HX 395+ wins
- ▲L3 cache — 128.57% more. 64 MB vs 28 MB.
- ▲Cores — 14.29% more. 16 vs 14.
- ▲Boost clock — 13.33% more. 5.1 GHz vs 4.5 GHz.
- ▲Cinebench R23 (multi) — 3.77% more. 27500 vs 26500.
Spec comparison
Cores
| Spec | Apple - M4 Max (16-core) | AMD - Ryzen AI 9 HX 395+ |
|---|---|---|
| Coresⓘ | 14 | 16lead |
| Threadsⓘ | 14 | 32lead |
| Base clockⓘ | 0 GHz | 3.0 GHzlead |
| Boost clockⓘ | 4.5 GHz | 5.1 GHzlead |
| L3 cacheⓘ | 28 MB | 64 MBlead |
Platform
| Spec | Apple - M4 Max (16-core) | AMD - Ryzen AI 9 HX 395+ |
|---|---|---|
| Socketⓘ | Soldered | FP11 |
| TDPⓘ | 45 Wlead | 55 W |
| Integrated graphicsⓘ | true | true |
| DDR5ⓘ | true | true |
Benchmarks
| Spec | Apple - M4 Max (16-core) | AMD - Ryzen AI 9 HX 395+ |
|---|---|---|
| Cinebench R23 (multi)ⓘ | 26500 | 27500lead |
| Cinebench R23 (single)ⓘ | 2275lead | 2050 |
Spec-level deep dives
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