Intel Core i7-5820K vs Intel Core i7-8700K
20.7Single-core37.3
30.2Multi-core34.7
37.1Gaming38.5
3 spec wins — Intel Core i7-5820K10 spec wins — Intel Core i7-8700K
InnoReviews verdict
Intel Core i7-8700K wins this desktop processor face-off, 36.4 to 29.1, pulling ahead mainly in Single-core (+17) and Multi-core (+5). 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
- 75% higher CPU PCIe lanes: 28 vs 16
- 25% higher L3 cache: 15 MB vs 12 MB
Reasons to pick the Intel Core i7-8700K
- Stronger Single-core score: 37 vs 21
- Stronger Multi-core score: 35 vs 30
- 50% higher Geekbench 6 (single): 1,560 vs 1,040
- 44% higher Cinebench R23 (multi): 9,200 vs 6,400
- 43% higher Cinebench R23 (single): 1,270 vs 890
General
| Spec | Intel Core i7-5820K | Intel Core i7-8700K |
|---|---|---|
| Announced | 2014 | 2017 |
| Socket | LGA2011-v3 | LGA1151-v2 |
| Process | 22 nm | 14 nm+36% |
| Base TDP | 140 W | 95 W+32% |
| Unlocked multiplier | Yes | Yes |
| Cooler included | No | No |
Cores & Clocks
| Spec | Intel Core i7-5820K | Intel Core i7-8700K |
|---|---|---|
| Cores | 6 | 6 |
| Performance cores | 6 | 6 |
| Efficiency cores | 0 | 0 |
| Threads | 12 | 12 |
| Base clock | 3.3 GHz | 3.7 GHz+12% |
| Boost clock | 3.6 GHz | 4.7 GHz+31% |
| L2 cache | 2 MB | 2 MB |
| L3 cache | 15 MB+25% | 12 MB |
Integrated GPU
| Spec | Intel Core i7-5820K | Intel Core i7-8700K |
|---|---|---|
| iGPU | — | Intel UHD Graphics 630 |
| iGPU clock | — | 1,200 MHz |
Memory
| Spec | Intel Core i7-5820K | Intel Core i7-8700K |
|---|---|---|
| Memory support | DDR4-2133 | DDR4-2666 |
| Max memory | 64 GB | 64 GB |
| Memory channels | 4+100% | 2 |
Platform
| Spec | Intel Core i7-5820K | Intel Core i7-8700K |
|---|---|---|
| PCIe version | 3 | 3 |
| CPU PCIe lanes | 28+75% | 16 |
Benchmarks
| Spec | Intel Core i7-5820K | Intel Core i7-8700K |
|---|---|---|
| Geekbench 6 (single) | 1,040Top 95% | 1,560+50%Top 58% |
| Geekbench 6 (multi) | 5,100Top 73% | 6,800+33%Top 59% |
| Cinebench R23 (single) | 890Top 96% | 1,270+43%Top 63% |
| Cinebench R23 (multi) | 6,400Top 77% | 9,200+44%Top 61% |
| PassMark | 12,700Top 72% | 13,900+9%Top 68% |
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