Component comparison
Core Ultra 7 255H vs Core Ultra 9 275HX
Core Ultra 7 255H vs Core Ultra 9 275HX — detailed CPU comparison: performance, cores, frequencies.
Advantages
A
Core Ultra 7 255H
Components are close in specs
B
Core Ultra 9 275HX
- + Cores (+8)
- + Threads (+8)
- + Base clock (GHz) (+0.70 GHz)
- + Boost clock (GHz) (+0.30 GHz)
- + L3 cache (MB) (+12 MB)
- + TGP / TDP (W) (+27 W)
- + Geekbench 5 (single-core) (+334)
- + Geekbench 5 (multi-core) (+4675)
- + Normalized score (+8.6)
Detailed spec comparison
| Spec |
Component A
Core Ultra 7 255H
|
Component B
Core Ultra 9 275HX
|
|---|---|---|
| Release year | 2025 | 2025 |
| Cores | 16 | 24 (+8) |
| Threads | 16 | 24 (+8) |
| Base clock (GHz) | 2.00 GHz | 2.70 GHz (+0.70 GHz) |
| Boost clock (GHz) | 5.10 GHz | 5.40 GHz (+0.30 GHz) |
| L1 cache (KB) | — | — |
| L2 cache (KB) | — | — |
| L3 cache (MB) | 24 MB | 36 MB (+12 MB) |
| Bandwidth (GB/s) | — | — |
| Memory channels | — | — |
| Max memory (GB) | — | — |
| TGP / TDP (W) | 28 W | 55 W (+27 W) |
| Lithography (nm) | 3 nm | 3 nm |
| Critical temp (°C) | 110 °C | — |
| PassMark (overall) | — | — |
| PassMark (single-thread) | — | — |
| Geekbench 5 (single-core) | 2,487 | 2,821 (+334) |
| Geekbench 5 (multi-core) | 13,219 | 17,894 (+4675) |
| Normalized score | 91.4 | 100.0 (+8.6) |
In both
AVX
AVX2
AES-NI
VT-x
VT-d
Based on the comparison:
Core Ultra 9 275HX wins 9 of the comparable criteria.
The choice depends on your use case.
🤔 How to choose
Universal advice for any use case.
- Reliability vs price: reliability (median 50) ↔ price (median 385.1).
- Weight vs CPU: mobility (median 48) ↔ overall performance (median 49.8).
- Upgradeability vs battery: upgradability (median 50) ↔ battery life (median 2.8).