Between the Ryzen 9 7900X and Ryzen AI 9 HX 395+, the Ryzen 9 7900X comes out ahead in boost clock and cinebench r23 (multi), while the Ryzen AI 9 HX 395+ wins on tdp and cores. Overall, the Ryzen 9 7900X scores 55.6 and the Ryzen AI 9 HX 395+ scores 54.3 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (55.6 vs 54.3). The decision isn't about overall quality — both clear the bar — it's about which specific trade-offs fit your use.
Pick the Ryzen 9 7900X 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 boost clock, cinebench r23 (multi).
Pick the Ryzen AI 9 HX 395+ if you care most about tdp and cores. Its strongest claims are tdp, cores.
Both ship with comparable l3 cache, so those specs don't separate the two — focus on the differences below.
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 AMD - Ryzen 9 7900X wins
- ▲Boost clock — 9.80% more. 5.6 GHz vs 5.1 GHz.
- ▲Cinebench R23 (multi) — 7.64% more. 29600 vs 27500.
Why AMD - Ryzen AI 9 HX 395+ wins
- ▲TDP — 115.00 W less. 55 vs 170.
- ▲Cores — 33.33% more. 16 vs 12.
Spec comparison
Cores
| Spec | AMD - Ryzen 9 7900X | AMD - Ryzen AI 9 HX 395+ |
|---|---|---|
| Coresⓘ | 12 | 16lead |
| Threadsⓘ | 24 | 32lead |
| Base clockⓘ | 4.7 GHzlead | 3.0 GHz |
| Boost clockⓘ | 5.6 GHzlead | 5.1 GHz |
| L3 cacheⓘ | 64 MB | 64 MB |
Platform
| Spec | AMD - Ryzen 9 7900X | AMD - Ryzen AI 9 HX 395+ |
|---|---|---|
| Socketⓘ | AM5 | FP11 |
| TDPⓘ | 170 W | 55 Wlead |
| Integrated graphicsⓘ | true | true |
| DDR5ⓘ | true | true |
Benchmarks
| Spec | AMD - Ryzen 9 7900X | AMD - Ryzen AI 9 HX 395+ |
|---|---|---|
| Cinebench R23 (multi)ⓘ | 29600lead | 27500 |
| Cinebench R23 (single)ⓘ | 2030 | 2050lead |
Frequently asked
Spec-level deep dives
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