Intel Core i5-6600K vs Intel Core i5-8600K
29Single-core34.5
24Multi-core30
23.8Gamingspec-based29.1
1 spec wins — Intel Core i5-6600K13 spec wins — Intel Core i5-8600K
InnoReviews verdict
Intel Core i5-8600K wins this desktop processor face-off, 31.1 to 25.4, pulling ahead mainly in multi-core (+6) and single-core (+6). Intel Core i5-6600K 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 i5-6600K
No decisive spec advantages — this side competes on price and preference.
Reasons to pick the Intel Core i5-8600K
- Stronger single-core score: 35 vs 29
- Stronger multi-core score: 30 vs 24
- 68% higher Cinebench R23 (multi): 6,800 vs 4,050
- 66% higher PassMark: 10,600 vs 6,400
- 61% higher Geekbench 6 (multi): 5,400 vs 3,350
General
| Spec | Intel Core i5-6600K | Intel Core i5-8600K |
|---|---|---|
| Announced | 2015 | 2017 |
| Socket | LGA1151 | LGA1151-v2 |
| Process | 14 nm | 14 nm |
| Base TDP | 91 W+4% | 95 W |
| Unlocked multiplier | Yes | Yes |
| Cooler included | No | No |
Cores & Clocks
| Spec | Intel Core i5-6600K | Intel Core i5-8600K |
|---|---|---|
| Cores | 4 | 6+50% |
| Performance cores | 4 | 6+50% |
| Efficiency cores | 0 | 0 |
| Threads | 4 | 6+50% |
| Base clock | 3.5 GHz | 3.6 GHz+3% |
| Boost clock | 3.9 GHz | 4.3 GHz+10% |
| L2 cache | 1 MB | 2 MB+50% |
| L3 cache | 6 MB | 9 MB+50% |
Integrated GPU
| Spec | Intel Core i5-6600K | Intel Core i5-8600K |
|---|---|---|
| iGPU | Intel HD Graphics 530 | Intel UHD Graphics 630 |
| iGPU clock | 1,150 MHz | 1,150 MHz |
Memory
| Spec | Intel Core i5-6600K | Intel Core i5-8600K |
|---|---|---|
| Memory support | DDR4-2133 / DDR3L-1600 | DDR4-2666 |
| Max memory | 64 GB | 64 GB |
| Memory channels | 2 | 2 |
Platform
| Spec | Intel Core i5-6600K | Intel Core i5-8600K |
|---|---|---|
| PCIe version | 3 | 3 |
| CPU PCIe lanes | 16 | 16 |
Benchmarks
| Spec | Intel Core i5-6600K | Intel Core i5-8600K |
|---|---|---|
| Geekbench 6 (single) | 1,300Bottom 19% | 1,480+14%Bottom 26% |
| Geekbench 6 (multi) | 3,350Bottom 9% | 5,400+61%Bottom 26% |
| Cinebench R23 (single) | 1,110Bottom 17% | 1,210+9%Bottom 25% |
| Cinebench R23 (multi) | 4,050Bottom 9% | 6,800+68%Bottom 22% |
| PassMark | 6,400Bottom 8% | 10,600+66%Bottom 16% |
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