Core Ultra 7 155H vs Core Ultra 7 255HX
Head-to-head specifications
| Metric | Core Ultra 7 155H | Core Ultra 7 255HX | Difference |
|---|---|---|---|
| Cinebench 2024 single-core | 99 | 131 | -24.4% |
| Cinebench 2024 multi-core | 957 | 1,820 | -47.4% |
| Cores | 16 (6P+10E) | 20 (8P+12E) | — |
| TDP (base W) | 20 | 45 | — |
| PassMark CPU Mark | 24,539 | 48,405 | -49.3% |
- Core Ultra 7 155H is slower than Core Ultra 7 255HX by 24.4% in single-core and slower by 47.4% in multi-core (Cinebench 2024).
- Core Ultra 7 155H draws less power (20W vs 45W base TDP).
Verdict: Core Ultra 7 155H or Core Ultra 7 255HX?
Core Ultra 7 155H advantages
- Power efficiency (+56%)
Core Ultra 7 255HX advantages
- Single-core speed (+24%)
- Multi-core speed (+47%)
Which should you choose?
- Choose the Core Ultra 7 155H if you want a cooler, quieter and more power-efficient build.
- Choose the Core Ultra 7 255HX if you mainly game or want snappy everyday responsiveness.
Core Ultra 7 155H vs Core Ultra 7 255HX: which should you choose?
Core Ultra 7 155H — 16-core Intel processor (6P+10E) scoring 99 single-core and 957 multi-core in Cinebench 2024, with a 20 W TDP.
Core Ultra 7 255HX — 20-core Intel processor (8P+12E) scoring 131 single-core and 1820 multi-core in Cinebench 2024, with a 45 W TDP.
Core Ultra 7 155H vs Core Ultra 7 255HX: Core Ultra 7 255HX leads in multi-core performance. Core Ultra 7 155H is slower than Core Ultra 7 255HX by 24.4% in single-core and slower by 47.4% in multi-core (Cinebench 2024). Core Ultra 7 155H draws less power (20W vs 45W base TDP).
Gaming and single-threaded work
Games and everyday responsiveness lean on single-core speed. The Core Ultra 7 255HX leads there with a single-core score of 131 versus 99, so it is the marginally better pick for high-refresh gaming — though at typical resolutions the GPU usually decides frame rates.
Content creation and multitasking
For rendering, compilation, video export and other all-core workloads, the Core Ultra 7 255HX is stronger, posting 1,820 multi-core against 957 in Cinebench 2024. Its 20 cores (8 performance + 12 efficiency) give it real headroom for heavy parallel jobs.
Power and platform
The Core Ultra 7 155H is the more efficient chip at 20 W versus 45 W, which means less heat, quieter cooling and lower running costs under sustained load.
The verdict
Both are credible choices in the processor comparison space; the specification table above lays out every metric so you can weigh the trade-offs that matter to you. Pick the one whose strengths line up with how you will actually use it.
Frequently asked questions
Is the Core Ultra 7 155H better than the Core Ultra 7 255HX?
Core Ultra 7 255HX is the clearly stronger overall choice, winning most of the dimensions that matter. Core Ultra 7 155H is slower than Core Ultra 7 255HX by 24.4% in single-core and slower by 47.4% in multi-core (Cinebench 2024).
What is the main difference between the Core Ultra 7 155H and the Core Ultra 7 255HX?
Core Ultra 7 155H is slower than Core Ultra 7 255HX by 24.4% in single-core and slower by 47.4% in multi-core (Cinebench 2024). Core Ultra 7 155H draws less power (20W vs 45W base TDP).
Which should I choose?
Choose the Core Ultra 7 155H if you want a cooler, quieter and more power-efficient build. Choose the Core Ultra 7 255HX if you mainly game or want snappy everyday responsiveness.
Methodology
Processors are compared on Cinebench 2024 single-core and multi-core scores from published leaderboard results, alongside core configuration (performance + efficiency cores), base TDP, L3 cache, PassMark CPU Mark, 1080p gaming scores and street pricing where measured. Cinebench reflects rendering-style workloads; gaming performance depends heavily on the GPU and the specific title, so treat single-core standing as directional. Figures reflect the leaderboard snapshot on the page date.