Intel Core Ultra 7 251HX PassMark Score Beats 20-Core HX Models

Early benchmark results for the Intel Core Ultra 7 251HX processor appear in PassMark with performance metrics that match or slightly exceed existing 20-core models. The chip enters testing as an early result based on only two submitted samples, which carries a high margin of error according to PassMark data. Hardware tracking accounts from X86dead&back and benchmark platforms show the silicon running at its confirmed specifications.

Early benchmark results show the chip outperforming existing 20-core mobile processors in multi-thread workloads.

The processor belongs to Intel's Arrow Lake-HX mobile platform lineup and features an 18-core configuration split between six performance cores and twelve efficient cores. Intel confirmed this SKU carries a 5.1 GHz maximum turbo clock speed alongside a 55 W base power rating and 160 W maximum turbo power limit. The integrated graphics section provides three Xe-cores for display output.

Specifications

• Cores (P+E): 18 (6+12)
• Max CPU Clock: 5.1 GHz
• Power (TDP/Max): 55 W / 160 W
• iGPU Xe-cores: 3
• Multi-thread Score: 48,713 points

PassMark multi-thread testing places the Core Ultra 7 251HX at 48,713 points while single-thread work reaches 4,666 points. This multi-thread score positions the chip slightly ahead of both the Core Ultra 7 255HX and the Core Ultra 7 265HX in the same database. The results come from early submissions that have not yet undergone final validation.

Adding four extra efficient cores over the Core Ultra 5 245HX model yields a multi-thread score increase of approximately 28 percent or 10,768 points. The silicon already appears inside several gaming laptop configurations from Lenovo and MSI ahead of broader market release. No official pricing information exists in current reports.

The processor sits within Intel's refresh Arrow Lake-HX family targeting high-performance mobile workstations and gaming laptops. Early benchmark numbers suggest the 18-core design delivers competitive throughput against older 20-core variants despite the reduced core count in performance tiers.

PassMark flags these early results with a high margin of error due to the limited sample size of two submissions. The multi-thread score and single-thread metrics may shift as more units reach testing platforms before final specifications lock.