Intel - Core Ultra 7 265K vs Intel - Core Ultra 9 285K
Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Intel - Core Ultra 7 265K | Intel - Core Ultra 9 285K |
|---|---|---|
| Cores | 20 | 24 |
| L3 cache | 30 MB | 36 MB |
| Cinebench R23 (multi) | 36500 | 42800 |
| Boost clock | 5.5 GHz | 5.7 GHz |
Between the Core Ultra 7 265K and Core Ultra 9 285K, the Core Ultra 7 265K comes out ahead in several specs, while the Core Ultra 9 285K wins on cores / l3 cache. Overall, the Core Ultra 7 265K scores 57.7 and the Core Ultra 9 285K scores 60.9 on our Mars Score.
Which should you buy?
The Core Ultra 9 285K edges ahead on the Mars Score (57.7 vs 60.9), but the 3.2-point gap is small enough that the right pick comes down to which spec advantages matter to you.
The Core Ultra 7 265K does not pull ahead on any single popular-comparison spec — its strengths sit in the spec-table groups rather than the headline advantages.
Pick the Core Ultra 9 285K 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 cores, l3 cache, cinebench r23 (multi), among others. The single most decisive one: Cores — 20.00% more. 24 vs 20.
Both ship with comparable tdp, so those specs do not 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 says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: Intel - Core Ultra 7 265K or Intel - Core Ultra 9 285K?
Intel - Core Ultra 9 285K leads the current Mars Score by 3.2 points.The more useful decision is the trade-off behind that result: compare cores, boost clock against the way you will actually use the product.
Choose Intel - Core Ultra 7 265K if…
Intel - Core Ultra 7 265K does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
Choose Intel - Core Ultra 9 285K if…
Intel - Core Ultra 9 285K has the measurable edge on core count, cache l3 mb, cinebench r23 multi.
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 Intel - Core Ultra 7 265K wins
- No decisive advantages.
Why Intel - Core Ultra 9 285K wins
- ▲Cores — 20.00% more. 24 vs 20.
- ▲L3 cache — 20.00% more. 36 MB vs 30 MB.
- ▲Cinebench R23 (multi) — 17.26% more. 42800 vs 36500.
- ▲Boost clock — 3.64% more. 5.7 GHz vs 5.5 GHz.
Spec comparison
Cores
| Spec | Intel - Core Ultra 7 265K | Intel - Core Ultra 9 285K |
|---|---|---|
| Coresⓘ | 20 | 24lead |
| Threadsⓘ | 20 | 24lead |
| Base clockⓘ | 3.9 GHzlead | 3.7 GHz |
| Boost clockⓘ | 5.5 GHz | 5.7 GHzlead |
| L3 cacheⓘ | 30 MB | 36 MBlead |
Platform
| Spec | Intel - Core Ultra 7 265K | Intel - Core Ultra 9 285K |
|---|---|---|
| Socketⓘ | LGA1851 | LGA1851 |
| TDPⓘ | 125 W | 125 W |
| Integrated graphicsⓘ | true | true |
| DDR5ⓘ | true | true |
Benchmarks
| Spec | Intel - Core Ultra 7 265K | Intel - Core Ultra 9 285K |
|---|---|---|
| Cinebench R23 (multi)ⓘ | 36500 | 42800lead |
| Cinebench R23 (single)ⓘ | 2160 | 2230lead |