Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Apple - M4 Max (16-core) | Apple - M5 Ultra |
|---|---|---|
| Cores | 14 | 36 |
| TDP | 45 W | |
| Boost clock | 4.5 GHz | |
| L3 cache | 28 MB | |
| Cinebench R23 (multi) | 26500 |
Between the M4 Max (16-core) and M5 Ultra, the M4 Max (16-core) comes out ahead in boost clock / l3 cache, while the M5 Ultra wins on cores / tdp. Overall, the M4 Max (16-core) scores 50.7 and the M5 Ultra scores 53.5 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (50.7 vs 53.5). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the M4 Max (16-core) 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, l3 cache, cinebench r23 (multi). The single most decisive one: Boost clock: 4.5 GHz vs GHz.
Pick the M5 Ultra if you care most about cores / tdp. Its strongest claims are cores, tdp. The single most decisive one: Cores — 157.14% more. 36 vs 14.
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: Apple - M4 Max (16-core) or Apple - M5 Ultra?
Apple - M5 Ultra leads the current Mars Score by 2.8 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 Apple - M4 Max (16-core) if…
Apple - M4 Max (16-core) has the measurable edge on boost clock ghz, cache l3 mb, cinebench r23 multi.
Choose Apple - M5 Ultra if…
Apple - M5 Ultra has the measurable edge on core count, 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 Apple - M4 Max (16-core) wins
- ▲Boost clock: 4.5 GHz vs GHz.
- ▲L3 cache: 28 MB vs MB.
- ▲Cinebench R23 (multi): 26500 vs .
Why Apple - M5 Ultra wins
- ▲Cores — 157.14% more. 36 vs 14.
- ▲TDP — 45.00 W less. vs 45.
Spec comparison
Cores
| Spec | Apple - M4 Max (16-core) | Apple - M5 Ultra |
|---|---|---|
| Coresⓘ | 14 | 36lead |
| Threadsⓘ | 14 | 36lead |
| Base clockⓘ | ||
| Boost clockⓘ | 4.5 GHzlead | |
| L3 cacheⓘ | 28 MBlead |
Platform
| Spec | Apple - M4 Max (16-core) | Apple - M5 Ultra |
|---|---|---|
| Socketⓘ | Soldered | Soldered |
| TDPⓘ | 45 W | lead |
| Integrated graphicsⓘ | true | true |
| DDR5ⓘ | true | true |
Benchmarks
| Spec | Apple - M4 Max (16-core) | Apple - M5 Ultra |
|---|---|---|
| Cinebench R23 (multi)ⓘ | 26500lead | |
| Cinebench R23 (single)ⓘ | 2275lead |