Intel Core i7-5820K vs Intel Core i7-6700K
20Single-core30.7
29.1Multi-core27
37.1Gamingspec-based25.6
8 spec wins — Intel Core i7-5820K7 spec wins — Intel Core i7-6700K
InnoReviews verdict
This one is close to a dead heat: Intel Core i7-5820K scores 28.4 against 27.7 for Intel Core i7-6700K. Pick by the categories that matter to you — Intel Core i7-5820K edges ahead in multi-core, or by price.
Which would you pick?
Key differences
Reasons to pick the Intel Core i7-5820K
- 100% higher Memory channels: 4 vs 2
- 88% higher L3 cache: 15 MB vs 8 MB
- 75% higher CPU PCIe lanes: 28 vs 16
- 50% higher cores: 6 vs 4
- 50% higher Performance cores: 6 vs 4
Reasons to pick the Intel Core i7-6700K
- Stronger single-core score: 31 vs 20
- 36% lower process: 14 nm vs 22 nm
- 35% lower Base TDP: 91 W vs 140 W
- 25% higher PassMark (single thread): 2,494 vs 1,992
- 22% higher Cinebench R23 (single): 1,090 vs 890
- Lower launch price: $339 vs $389
General
| Spec | Intel Core i7-5820K | Intel Core i7-6700K |
|---|---|---|
| Announced | 2014 | 2015 |
| Socket | LGA2011-v3 | LGA1151 |
| Process | 22 nm | 14 nm+36% |
| Base TDP | 140 W | 91 W+35% |
| Unlocked multiplier | Yes | Yes |
| Cooler included | No | No |
Cores & Clocks
| Spec | Intel Core i7-5820K | Intel Core i7-6700K |
|---|---|---|
| Cores | 6+50% | 4 |
| Performance cores | 6+50% | 4 |
| Efficiency cores | 0 | 0 |
| Threads | 12+50% | 8 |
| Base clock | 3.3 GHz | 4 GHz+21% |
| Boost clock | 3.6 GHz | 4.2 GHz+17% |
| L2 cache | 1.5 MB+50% | 1 MB |
| L3 cache | 15 MB+88% | 8 MB |
Integrated GPU
| Spec | Intel Core i7-5820K | Intel Core i7-6700K |
|---|---|---|
| iGPU | — | Intel HD Graphics 530 |
| iGPU clock | — | 1,150 MHz |
Memory
| Spec | Intel Core i7-5820K | Intel Core i7-6700K |
|---|---|---|
| Memory support | DDR4-2133 | DDR4-2133 / DDR3L-1600 |
| Max memory | 64 GB | 64 GB |
| Memory channels | 4+100% | 2 |
Platform
| Spec | Intel Core i7-5820K | Intel Core i7-6700K |
|---|---|---|
| PCIe version | 3 | 3 |
| CPU PCIe lanes | 28+75% | 16 |
Benchmarks
| Spec | Intel Core i7-5820K | Intel Core i7-6700K |
|---|---|---|
| Geekbench 6 (single) | — | 1,420Bottom 23% |
| Geekbench 6 (multi) | — | 4,650Bottom 12% |
| Cinebench R23 (single) | 890Bottom 5% | 1,090+22%Bottom 16% |
| Cinebench R23 (multi) | 6,400Bottom 14% | — |
| PassMark | 9,831+10%Bottom 16% | 8,933Bottom 14% |
| PassMark (single thread) | 1,992Bottom 3% | 2,494+25%Bottom 19% |
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