Intel Core i5-8400 vs Intel Core Ultra 5 250KF Plus
31.1Single-core—
28.6Multi-core79.9
27.2Gamingspec-based64.4
2 spec wins — Intel Core i5-840014 spec wins — Intel Core Ultra 5 250KF Plus
InnoReviews verdict
No overall winner yet: Intel Core Ultra 5 250KF Plus lacks the published benchmark results an Inno Score requires, so there is no Inno Score to compare — we don't rank chips on their spec sheet alone. The spec table below still shows every difference we track.
Which would you pick?
Key differences
Reasons to pick the Intel Core i5-8400
- 48% lower Base TDP: 65 W vs 125 W
- Has Cooler included — the other doesn't
- Lower launch price: $182 vs $204
Reasons to pick the Intel Core Ultra 5 250KF Plus
- Stronger multi-core score: 80 vs 29
- 1900% higher L2 cache: 30 MB vs 2 MB
- 455% higher PassMark: 51,037 vs 9,200
- 300% higher Max memory: 256 GB vs 64 GB
- 233% higher L3 cache: 30 MB vs 9 MB
General
| Spec | Intel Core i5-8400 | Intel Core Ultra 5 250KF Plus |
|---|---|---|
| Announced | 2017 | 2026 |
| Socket | LGA1151-v2 | LGA1851 |
| Process | 14 nm | 3 nm+79% |
| Base TDP | 65 W+48% | 125 W |
| Max turbo power | — | 159 W |
| Unlocked multiplier | No | Yes |
| Cooler included | Yes | No |
Cores & Clocks
| Spec | Intel Core i5-8400 | Intel Core Ultra 5 250KF Plus |
|---|---|---|
| Cores | 6 | 18+200% |
| Performance cores | 6 | 6 |
| Efficiency cores | 0 | 12 |
| Threads | 6 | 18+200% |
| Base clock | 2.8 GHz | 4.2 GHz+50% |
| Boost clock | 4 GHz | 5.3 GHz+32% |
| L2 cache | 2 MB | 30 MB+1900% |
| L3 cache | 9 MB | 30 MB+233% |
Integrated GPU
| Spec | Intel Core i5-8400 | Intel Core Ultra 5 250KF Plus |
|---|---|---|
| iGPU | Intel UHD Graphics 630 | — |
| iGPU clock | 1,050 MHz | — |
Memory
| Spec | Intel Core i5-8400 | Intel Core Ultra 5 250KF Plus |
|---|---|---|
| Memory support | DDR4-2666 | DDR5-7200 |
| Max memory | 64 GB | 256 GB+300% |
| Memory channels | 2 | 2 |
Platform
| Spec | Intel Core i5-8400 | Intel Core Ultra 5 250KF Plus |
|---|---|---|
| PCIe version | 3 | 5+67% |
| CPU PCIe lanes | 16 | 24+50% |
Benchmarks
| Spec | Intel Core i5-8400 | Intel Core Ultra 5 250KF Plus |
|---|---|---|
| Geekbench 6 (single) | 1,370Bottom 22% | — |
| Geekbench 6 (multi) | 4,900Bottom 20% | — |
| Cinebench R23 (single) | 1,150Bottom 23% | — |
| Cinebench R23 (multi) | 6,400Bottom 19% | — |
| PassMark | 9,200Bottom 14% | 51,037+455%Top 16% |
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