Intel Core Ultra 7 251HX: specs and benchmarks
Aggregate performance score
Core Ultra 7 251HX provides good benchmark performance at 28.50% of a leader's which is a 96-core Ryzen Threadripper PRO 9995WX.
Contents
Summary
Intel started Core Ultra 7 251HX sales 1 April 2026. This is an Arrow Lake-HX architecture notebook processor primarily aimed at home systems. It has 18 cores and 18 threads, and is based on 3 nm manufacturing technology, with a maximum frequency of 5100 MHz and a locked multiplier.
Primary details
Core Ultra 7 251HX processor market type (desktop or notebook), architecture, sales start time and pricing.
| Place in the ranking | 244 | |
| Place by popularity | not in top-100 | |
| Market segment | Laptop | |
| Series | Intel Arrow Lake | |
| Designer | Intel | |
| Architecture codename | Arrow Lake-HX (2025−2026) | |
| Release date | 1 April 2026 (less than a year ago) |
Detailed specifications
Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.
| Physical cores | 18 (Octadeca-Core) | |
| Threads | 18 | |
| Base clock speed | 2.5 GHz | of 4.7 GHz (FX-9590) |
| Boost clock speed | 5.1 GHz | of 6.2 GHz (Core i9-14900KS) |
| L2 cache | 30 MB | of 2 MB (Xeon 6980P) |
| L3 cache | 30 MB | of 1152 MB (EPYC 9684X) |
| Chip lithography | 3 nm | of 1.8 nm (Core Ultra 5 332) |
| 64 bit support | + |
Graphics specifications
General parameters of a GPU integrated into Core Ultra 7 251HX.
| Integrated graphics card | Intel Graphics 4-Core iGPU (Meteor / Arrow Lake) (300 - 1800 MHz) |
Benchmark performance
Single-core and multi-core benchmark results of Core Ultra 7 251HX. Overall benchmark performance is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance. Other than that, Passmark measures multi-core performance.
Send your test results of Core Ultra 7 251HX.
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