Intel Core i5-10400 vs Intel Core i9-9900K
30.4Single-core40.4
32.2Multi-core41.2
36Gaming47.4
4 spec wins — Intel Core i5-1040014 spec wins — Intel Core i9-9900K
InnoReviews verdict
Intel Core i9-9900K wins this desktop processor face-off, 42.5 to 32.6, pulling ahead mainly in gaming (+11) and Single-core (+10). Intel Core i5-10400 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
- 32% lower Base TDP: 65 W vs 95 W
- 13% higher Max turbo power: 134 W vs 119 W
- Has Cooler included — the other doesn't
- Lower launch price: $182 vs $488
Reasons to pick the Intel Core i9-9900K
- Stronger Single-core score: 40 vs 30
- Stronger Multi-core score: 41 vs 32
- Stronger gaming score: 47 vs 36
- 55% higher Cinebench R23 (multi): 12,400 vs 8,000
- 52% higher Geekbench 6 (multi): 8,800 vs 5,800
General
| Spec | Intel Core i5-10400 | Intel Core i9-9900K |
|---|---|---|
| Announced | 2020 | 2018 |
| Socket | LGA1200 | LGA1151-v2 |
| Process | 14 nm | 14 nm |
| Base TDP | 65 W+32% | 95 W |
| Max turbo power | 134 W+13% | 119 W |
| Unlocked multiplier | No | Yes |
| Cooler included | Yes | No |
Cores & Clocks
| Spec | Intel Core i5-10400 | Intel Core i9-9900K |
|---|---|---|
| Cores | 6 | 8+33% |
| Performance cores | 6 | 8+33% |
| Efficiency cores | 0 | 0 |
| Threads | 12 | 16+33% |
| Base clock | 2.9 GHz | 3.6 GHz+24% |
| Boost clock | 4.3 GHz | 5 GHz+16% |
| L2 cache | 2 MB | 2 MB+33% |
| L3 cache | 12 MB | 16 MB+33% |
Integrated GPU
| Spec | Intel Core i5-10400 | Intel Core i9-9900K |
|---|---|---|
| iGPU | Intel UHD Graphics 630 | Intel UHD Graphics 630 |
| iGPU clock | 1,100 MHz | 1,200 MHz+9% |
Memory
| Spec | Intel Core i5-10400 | Intel Core i9-9900K |
|---|---|---|
| Memory support | DDR4-2666 | DDR4-2666 |
| Max memory | 128 GB | 128 GB |
| Memory channels | 2 | 2 |
Platform
| Spec | Intel Core i5-10400 | Intel Core i9-9900K |
|---|---|---|
| PCIe version | 3 | 3 |
| CPU PCIe lanes | 16 | 16 |
Benchmarks
| Spec | Intel Core i5-10400 | Intel Core i9-9900K |
|---|---|---|
| Geekbench 6 (single) | 1,390Top 73% | 1,720+24%Top 51% |
| Geekbench 6 (multi) | 5,800Top 70% | 8,800+52%Top 46% |
| Cinebench R23 (single) | 1,100Top 80% | 1,280+16%Top 62% |
| Cinebench R23 (multi) | 8,000Top 71% | 12,400+55%Top 45% |
| PassMark | 12,600Top 73% | 18,600+48%Top 53% |
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