Intel Core i5-10400 vs Intel Core i5-6600K
30.4Single-core29
32.2Multi-core24
36Gaming23.8
14 spec wins — Intel Core i5-104004 spec wins — Intel Core i5-6600K
InnoReviews verdict
Intel Core i5-10400 wins this desktop processor face-off, 32.6 to 25.4, pulling ahead mainly in gaming (+12) and Multi-core (+8). 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 i5-10400
- Stronger Multi-core score: 32 vs 24
- Stronger gaming score: 36 vs 24
- 200% higher threads: 12 vs 4
- 100% higher L3 cache: 12 MB vs 6 MB
- 100% higher Max memory: 128 GB vs 64 GB
- Lower launch price: $182 vs $242
Reasons to pick the Intel Core i5-6600K
- 21% higher Base clock: 3.5 GHz vs 2.9 GHz
- Has Unlocked multiplier — the other doesn't
General
| Spec | Intel Core i5-10400 | Intel Core i5-6600K |
|---|---|---|
| Announced | 2020 | 2015 |
| Socket | LGA1200 | LGA1151 |
| Process | 14 nm | 14 nm |
| Base TDP | 65 W+29% | 91 W |
| Max turbo power | 134 W | — |
| Unlocked multiplier | No | Yes |
| Cooler included | Yes | No |
Cores & Clocks
| Spec | Intel Core i5-10400 | Intel Core i5-6600K |
|---|---|---|
| Cores | 6+50% | 4 |
| Performance cores | 6+50% | 4 |
| Efficiency cores | 0 | 0 |
| Threads | 12+200% | 4 |
| Base clock | 2.9 GHz | 3.5 GHz+21% |
| Boost clock | 4.3 GHz+10% | 3.9 GHz |
| L2 cache | 2 MB+50% | 1 MB |
| L3 cache | 12 MB+100% | 6 MB |
Integrated GPU
| Spec | Intel Core i5-10400 | Intel Core i5-6600K |
|---|---|---|
| iGPU | Intel UHD Graphics 630 | Intel HD Graphics 530 |
| iGPU clock | 1,100 MHz | 1,150 MHz+5% |
Memory
| Spec | Intel Core i5-10400 | Intel Core i5-6600K |
|---|---|---|
| Memory support | DDR4-2666 | DDR4-2133 / DDR3L-1600 |
| Max memory | 128 GB+100% | 64 GB |
| Memory channels | 2 | 2 |
Platform
| Spec | Intel Core i5-10400 | Intel Core i5-6600K |
|---|---|---|
| PCIe version | 3 | 3 |
| CPU PCIe lanes | 16 | 16 |
Benchmarks
| Spec | Intel Core i5-10400 | Intel Core i5-6600K |
|---|---|---|
| Geekbench 6 (single) | 1,390+7%Top 73% | 1,300Top 77% |
| Geekbench 6 (multi) | 5,800+73%Top 70% | 3,350Top 90% |
| Cinebench R23 (single) | 1,100Top 80% | 1,110+1%Top 78% |
| Cinebench R23 (multi) | 8,000+98%Top 71% | 4,050Top 90% |
| PassMark | 12,600+97%Top 73% | 6,400Top 89% |
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