Intel Core i7-5820K vs Intel Core i9-9900K
20.7Single-core40.4
30.2Multi-core41.2
37.1Gamingspec-based47.4
2 spec wins — Intel Core i7-5820K16 spec wins — Intel Core i9-9900K
InnoReviews verdict
Intel Core i9-9900K wins this desktop processor face-off, 42.5 to 29.1, pulling ahead mainly in single-core (+20) and multi-core (+11). 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
- Lower launch price: $389 vs $488
Reasons to pick the Intel Core i9-9900K
- Stronger single-core score: 40 vs 21
- Stronger multi-core score: 41 vs 30
- 100% higher Max memory: 128 GB vs 64 GB
- 94% higher Cinebench R23 (multi): 12,400 vs 6,400
- 73% higher Geekbench 6 (multi): 8,800 vs 5,100
General
| Spec | Intel Core i7-5820K | Intel Core i9-9900K |
|---|---|---|
| Announced | 2014 | 2018 |
| Socket | LGA2011-v3 | LGA1151-v2 |
| Process | 22 nm | 14 nm+36% |
| Base TDP | 140 W | 95 W+32% |
| Max turbo power | — | 119 W |
| Unlocked multiplier | Yes | Yes |
| Cooler included | No | No |
Cores & Clocks
| Spec | Intel Core i7-5820K | Intel Core i9-9900K |
|---|---|---|
| Cores | 6 | 8+33% |
| Performance cores | 6 | 8+33% |
| Efficiency cores | 0 | 0 |
| Threads | 12 | 16+33% |
| Base clock | 3.3 GHz | 3.6 GHz+9% |
| Boost clock | 3.6 GHz | 5 GHz+39% |
| L2 cache | 2 MB | 2 MB+33% |
| L3 cache | 15 MB | 16 MB+7% |
Integrated GPU
| Spec | Intel Core i7-5820K | Intel Core i9-9900K |
|---|---|---|
| iGPU | — | Intel UHD Graphics 630 |
| iGPU clock | — | 1,200 MHz |
Memory
| Spec | Intel Core i7-5820K | Intel Core i9-9900K |
|---|---|---|
| Memory support | DDR4-2133 | DDR4-2666 |
| Max memory | 64 GB | 128 GB+100% |
| Memory channels | 4+100% | 2 |
Platform
| Spec | Intel Core i7-5820K | Intel Core i9-9900K |
|---|---|---|
| PCIe version | 3 | 3 |
| CPU PCIe lanes | 28+75% | 16 |
Benchmarks
| Spec | Intel Core i7-5820K | Intel Core i9-9900K |
|---|---|---|
| Geekbench 6 (single) | 1,040Bottom 6% | 1,720+65%Bottom 41% |
| Geekbench 6 (multi) | 5,100Bottom 24% | 8,800+73%Bottom 44% |
| Cinebench R23 (single) | 890Bottom 5% | 1,280+44%Bottom 31% |
| Cinebench R23 (multi) | 6,400Bottom 19% | 12,400+94%Bottom 47% |
| PassMark | 12,700Bottom 20% | 18,600+46%Bottom 32% |
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