Intel Core i7-5820K vs Intel Core Ultra 7 265KF
20.7Single-core90.1
30.2Multi-core91.3
37.1Gamingspec-based65.7
2 spec wins — Intel Core i7-5820K16 spec wins — Intel Core Ultra 7 265KF
InnoReviews verdict
Intel Core Ultra 7 265KF wins this desktop processor face-off, 84.5 to 29.1, pulling ahead mainly in single-core (+69) and multi-core (+61). Intel Core i7-5820K still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the Intel Core i7-5820K
- 100% higher Memory channels: 4 vs 2
- 17% higher CPU PCIe lanes: 28 vs 24
Reasons to pick the Intel Core Ultra 7 265KF
- Stronger single-core score: 90 vs 21
- Stronger multi-core score: 91 vs 30
- 2300% higher L2 cache: 36 MB vs 2 MB
- 360% higher PassMark: 58,454 vs 12,700
- 341% higher Geekbench 6 (multi): 22,483 vs 5,100
General
| Spec | Intel Core i7-5820K | Intel Core Ultra 7 265KF |
|---|---|---|
| Announced | 2014 | 2024 |
| Socket | LGA2011-v3 | LGA1851 |
| Process | 22 nm | 3 nm+86% |
| Base TDP | 140 W | 125 W+11% |
| Max turbo power | — | 250 W |
| Unlocked multiplier | Yes | Yes |
| Cooler included | No | No |
Cores & Clocks
| Spec | Intel Core i7-5820K | Intel Core Ultra 7 265KF |
|---|---|---|
| Cores | 6 | 20+233% |
| Performance cores | 6 | 8+33% |
| Efficiency cores | 0 | 12 |
| Threads | 12 | 20+67% |
| Base clock | 3.3 GHz | 3.9 GHz+18% |
| Boost clock | 3.6 GHz | 5.5 GHz+53% |
| L2 cache | 2 MB | 36 MB+2300% |
| L3 cache | 15 MB | 30 MB+100% |
Memory
| Spec | Intel Core i7-5820K | Intel Core Ultra 7 265KF |
|---|---|---|
| Memory support | DDR4-2133 | DDR5-6400 |
| Max memory | 64 GB | 256 GB+300% |
| Memory channels | 4+100% | 2 |
Platform
| Spec | Intel Core i7-5820K | Intel Core Ultra 7 265KF |
|---|---|---|
| PCIe version | 3 | 5+67% |
| CPU PCIe lanes | 28+17% | 24 |
Benchmarks
| Spec | Intel Core i7-5820K | Intel Core Ultra 7 265KF |
|---|---|---|
| Geekbench 6 (single) | 1,040Bottom 6% | 3,235+211%Top 9% |
| Geekbench 6 (multi) | 5,100Bottom 24% | 22,483+341%Top 3% |
| Cinebench R23 (single) | 890Bottom 5% | — |
| Cinebench R23 (multi) | 6,400Bottom 19% | — |
| PassMark | 12,700Bottom 20% | 58,454+360%Top 10% |
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