Between the M4 and Ryzen 9 9900X3D, the M4 comes out ahead in tdp, while the Ryzen 9 9900X3D wins on l3 cache and cinebench r23 (multi). Overall, the M4 scores 45.9 and the Ryzen 9 9900X3D scores 58.1 on our Mars Score.
Which should you buy?
The Ryzen 9 9900X3D is the clear pick on raw spec strength, leading by 12.2 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 M4 if you care most about tdp. The biggest gaps in its favor are tdp.
Pick the Ryzen 9 9900X3D 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, among others.
There are no meaningful ties on the headline specs — every popular-comparison metric has a winner.
Bottom line: the Ryzen 9 9900X3D is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Apple - M4 wins
- ▲TDP — 98.00 W less. 22 vs 120.
Why AMD - Ryzen 9 9900X3D wins
- ▲L3 cache — 700.00% more. 128 MB vs 16 MB.
- ▲Cinebench R23 (multi) — 99.40% more. 33500 vs 16800.
- ▲Boost clock — 25.00% more. 5.5 GHz vs 4.4 GHz.
- ▲Cores — 20.00% more. 12 vs 10.
Spec comparison
Cores
| Spec | Apple - M4 | AMD - Ryzen 9 9900X3D |
|---|---|---|
| Coresⓘ | 10 | 12lead |
| Threadsⓘ | 10 | 24lead |
| Base clockⓘ | 0 GHz | 4.4 GHzlead |
| Boost clockⓘ | 4.4 GHz | 5.5 GHzlead |
| L3 cacheⓘ | 16 MB | 128 MBlead |
Platform
| Spec | Apple - M4 | AMD - Ryzen 9 9900X3D |
|---|---|---|
| Socketⓘ | Soldered | AM5 |
| TDPⓘ | 22 Wlead | 120 W |
| Integrated graphicsⓘ | true | true |
| DDR5ⓘ | true | true |
Benchmarks
| Spec | Apple - M4 | AMD - Ryzen 9 9900X3D |
|---|---|---|
| Cinebench R23 (multi)ⓘ | 16800 | 33500lead |
| Cinebench R23 (single)ⓘ | 2110 | 2240lead |
Spec-level deep dives
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