Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Apple - M4 Ultra | Intel - Core Ultra 9 285K |
|---|---|---|
| L3 cache | 64 MB | 36 MB |
| Cores | 32 | 24 |
| Boost clock | 4.5 GHz | 5.7 GHz |
| Cinebench R23 (multi) | 52600 | 42800 |
| TDP | 120 W | 125 W |
Between the M4 Ultra and Core Ultra 9 285K, the M4 Ultra comes out ahead in l3 cache / cores, while the Core Ultra 9 285K wins on boost clock. Overall, the M4 Ultra scores 63.1 and the Core Ultra 9 285K scores 60.9 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (63.1 vs 60.9). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the M4 Ultra 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 l3 cache, cores, cinebench r23 (multi), among others. The single most decisive one: L3 cache — 77.78% more. 64 MB vs 36 MB.
Pick the Core Ultra 9 285K if you care most about boost clock. Its strongest claims are boost clock. The single most decisive one: Boost clock — 26.67% more. 5.7 GHz vs 4.5 GHz.
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 Ultra or Intel - Core Ultra 9 285K?
Apple - M4 Ultra leads the current Mars Score by 2.2 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 Ultra if…
Apple - M4 Ultra has the measurable edge on cache l3 mb, core count, cinebench r23 multi.
Choose Intel - Core Ultra 9 285K if…
Intel - Core Ultra 9 285K has the measurable edge on boost clock ghz.
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 Ultra wins
- ▲L3 cache — 77.78% more. 64 MB vs 36 MB.
- ▲Cores — 33.33% more. 32 vs 24.
- ▲Cinebench R23 (multi) — 22.90% more. 52600 vs 42800.
- ▲TDP — 5.00 W less. 120 vs 125.
Why Intel - Core Ultra 9 285K wins
- ▲Boost clock — 26.67% more. 5.7 GHz vs 4.5 GHz.
Spec comparison
Cores
| Spec | Apple - M4 Ultra | Intel - Core Ultra 9 285K |
|---|---|---|
| Coresⓘ | 32lead | 24 |
| Threadsⓘ | 32lead | 24 |
| Base clockⓘ | 0 GHz | 3.7 GHzlead |
| Boost clockⓘ | 4.5 GHz | 5.7 GHzlead |
| L3 cacheⓘ | 64 MBlead | 36 MB |
Platform
| Spec | Apple - M4 Ultra | Intel - Core Ultra 9 285K |
|---|---|---|
| Socketⓘ | Soldered | LGA1851 |
| TDPⓘ | 120 Wlead | 125 W |
| Integrated graphicsⓘ | true | true |
| DDR5ⓘ | true | true |
Benchmarks
| Spec | Apple - M4 Ultra | Intel - Core Ultra 9 285K |
|---|---|---|
| Cinebench R23 (multi)ⓘ | 52600lead | 42800 |
| Cinebench R23 (single)ⓘ | 2290lead | 2230 |