Intel Core i5-8400 vs Intel Core Ultra 7 265K
31.1Single-core87.2
28.6Multi-core88.5
27.2Gamingspec-based65.7
2 spec wins — Intel Core i5-840019 spec wins — Intel Core Ultra 7 265K
InnoReviews verdict
Intel Core Ultra 7 265K wins this desktop processor face-off, 82.4 to 29, pulling ahead mainly in multi-core (+60) and single-core (+56). Intel Core i5-8400 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 i5-8400
- 48% lower Base TDP: 65 W vs 125 W
- Has Cooler included — the other doesn't
- Lower launch price: $182 vs $394
Reasons to pick the Intel Core Ultra 7 265K
- Stronger single-core score: 87 vs 31
- Stronger multi-core score: 89 vs 29
- 2300% higher L2 cache: 36 MB vs 2 MB
- 537% higher PassMark: 58,569 vs 9,200
- 461% higher Cinebench R23 (multi): 35,905 vs 6,400
General
| Spec | Intel Core i5-8400 | Intel Core Ultra 7 265K |
|---|---|---|
| Announced | 2017 | 2024 |
| Socket | LGA1151-v2 | LGA1851 |
| Process | 14 nm | 3 nm+79% |
| Base TDP | 65 W+48% | 125 W |
| Max turbo power | — | 250 W |
| Unlocked multiplier | No | Yes |
| Cooler included | Yes | No |
Cores & Clocks
| Spec | Intel Core i5-8400 | Intel Core Ultra 7 265K |
|---|---|---|
| Cores | 6 | 20+233% |
| Performance cores | 6 | 8+33% |
| Efficiency cores | 0 | 12 |
| Threads | 6 | 20+233% |
| Base clock | 2.8 GHz | 3.9 GHz+39% |
| Boost clock | 4 GHz | 5.5 GHz+38% |
| L2 cache | 2 MB | 36 MB+2300% |
| L3 cache | 9 MB | 30 MB+233% |
Integrated GPU
| Spec | Intel Core i5-8400 | Intel Core Ultra 7 265K |
|---|---|---|
| iGPU | Intel UHD Graphics 630 | Intel Graphics |
| iGPU clock | 1,050 MHz | 2,000 MHz |
Memory
| Spec | Intel Core i5-8400 | Intel Core Ultra 7 265K |
|---|---|---|
| Memory support | DDR4-2666 | DDR5-6400 |
| Max memory | 64 GB | 256 GB+300% |
| Memory channels | 2 | 2 |
Platform
| Spec | Intel Core i5-8400 | Intel Core Ultra 7 265K |
|---|---|---|
| PCIe version | 3 | 5+67% |
| CPU PCIe lanes | 16 | 24+50% |
Benchmarks
| Spec | Intel Core i5-8400 | Intel Core Ultra 7 265K |
|---|---|---|
| Geekbench 6 (single) | 1,370Bottom 22% | 3,092+126%Top 14% |
| Geekbench 6 (multi) | 4,900Bottom 20% | 20,019+309%Top 11% |
| Cinebench R23 (single) | 1,150Bottom 23% | 2,267+97%Top 6% |
| Cinebench R23 (multi) | 6,400Bottom 19% | 35,905+461%Top 10% |
| PassMark | 9,200Bottom 14% | 58,569+537%Top 9% |
Related comparisons
Intel Core i5-8400vs Intel Core i7-5820KVSIntel Core i5-8400vs Intel Core i3-10100FVSIntel Core i5-8400vs Intel Core i5-9400FVSIntel Core i5-8400vs Intel Core i7-5930KVSIntel Core Ultra 7 265Kvs Intel Core Ultra 9 285VSIntel Core Ultra 7 265Kvs Intel Core i7-14700KVSIntel Core Ultra 7 265Kvs AMD Ryzen 9 7900X3DVSIntel Core Ultra 7 265Kvs Intel Core Ultra 7 265KFVS