Intel Core i7-5820K vs Intel Core Ultra 7 265
20.7Single-core—
30.2Multi-core78.2
37.1Gamingspec-based64.4
4 spec wins — Intel Core i7-5820K14 spec wins — Intel Core Ultra 7 265
InnoReviews verdict
No overall winner yet: Intel Core Ultra 7 265 lacks the published benchmark results an Inno Score requires, so there is no Inno Score to compare — we don't rank chips on their spec sheet alone. The spec table below still shows every difference we track.
Which would you pick?
Key differences
Reasons to pick the Intel Core i7-5820K
- 100% higher Memory channels: 4 vs 2
- 38% higher Base clock: 3.3 GHz vs 2.4 GHz
- 17% higher CPU PCIe lanes: 28 vs 24
- Has Unlocked multiplier — the other doesn't
Reasons to pick the Intel Core Ultra 7 265
- Stronger multi-core score: 78 vs 30
- 2300% higher L2 cache: 36 MB vs 2 MB
- 300% higher Max memory: 256 GB vs 64 GB
- 291% higher PassMark: 49,685 vs 12,700
- 233% higher cores: 20 vs 6
General
| Spec | Intel Core i7-5820K | Intel Core Ultra 7 265 |
|---|---|---|
| Announced | 2014 | 2025+1% |
| Socket | LGA2011-v3 | LGA1851 |
| Process | 22 nm | 3 nm+86% |
| Base TDP | 140 W | 65 W+54% |
| Max turbo power | — | 182 W |
| Unlocked multiplier | Yes | No |
| Cooler included | No | Yes |
Cores & Clocks
| Spec | Intel Core i7-5820K | Intel Core Ultra 7 265 |
|---|---|---|
| Cores | 6 | 20+233% |
| Performance cores | 6 | 8+33% |
| Efficiency cores | 0 | 12 |
| Threads | 12 | 20+67% |
| Base clock | 3.3 GHz+38% | 2.4 GHz |
| Boost clock | 3.6 GHz | 5.3 GHz+47% |
| L2 cache | 2 MB | 36 MB+2300% |
| L3 cache | 15 MB | 30 MB+100% |
Integrated GPU
| Spec | Intel Core i7-5820K | Intel Core Ultra 7 265 |
|---|---|---|
| iGPU | — | Intel Graphics |
| iGPU clock | — | 1,950 MHz |
Memory
| Spec | Intel Core i7-5820K | Intel Core Ultra 7 265 |
|---|---|---|
| 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 7 265 |
|---|---|---|
| PCIe version | 3 | 5+67% |
| CPU PCIe lanes | 28+17% | 24 |
Benchmarks
| Spec | Intel Core i7-5820K | Intel Core Ultra 7 265 |
|---|---|---|
| Geekbench 6 (single) | 1,040Bottom 6% | — |
| Geekbench 6 (multi) | 5,100Bottom 24% | — |
| Cinebench R23 (single) | 890Bottom 5% | — |
| Cinebench R23 (multi) | 6,400Bottom 19% | — |
| PassMark | 12,700Bottom 20% | 49,685+291%Top 18% |
Related comparisons
Intel Core i7-5820Kvs Intel Core i5-8400VSIntel Core i7-5820Kvs Intel Core i3-10100FVSIntel Core i7-5820Kvs Intel Core i7-5930KVSIntel Core i7-5820Kvs Intel Core i5-9400FVSIntel Core Ultra 7 265vs Intel Core i7-14700VSIntel Core Ultra 7 265vs Intel Core Ultra 7 265FVSIntel Core Ultra 7 265vs Intel Core Ultra 9 285VSIntel Core Ultra 7 265vs Intel Core i5-14500VS