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Intel Core Ultra 7 251HX
The Core Ultra 7 251HX is Intel's Arrow Lake-HX refresh for mid-range gaming laptops, pairing 6 Lion Cove P-cores with 12 Skymont E-cores on a 3nm die. In review testing it lands just behind AMD's older Ryzen 9 7845HX in multi-core work, with a 30MB shared cache and DDR5-6400 support carried over from the platform's 2025 debut.
Pros
- 18 cores (6 P + 12 E) reach 26,001 points in multi-threaded review testing (Cinebench R23)
- 5.1GHz peak P-core clock keeps single-thread scores competitive
- DDR5-6400 support and a 256GB memory ceiling match higher-tier Arrow Lake-HX chips
- 45W minimum assured power gives laptop makers flexibility in thin gaming chassis
- 13 TOPS AI Boost NPU adds on-device AI acceleration
Cons
- No Hyper-Threading, so 18 cores yield only 18 threads
- The 3-Xe-core iGPU carries no Arc branding and is a basic display-only unit; every laptop pairs it with a discrete GPU
- 160W turbo power draw needs the same cooling as higher-tier HX chips despite fewer cores
- Trails both Intel's own Ultra 9 chips and several older HX3D parts in multi-core throughput
Good
Computed from specs & benchmarks via our public methodology.
Full specifications
Everything we track for the Intel Core Ultra 7 251HX
General
- Announced
- 2026
- Process
- 3 nm
- Base TDP
- 55 W
- Max TDP
- 160 W
Cores & Clocks
- Cores
- 18
- Performance cores
- 6
- Efficiency cores
- 12
- Threads
- 18
- Base clock
- 2.9 GHz
- Boost clock
- 5.1 GHz
- L3 cache
- 30 MB
Integrated GPU
- iGPU
- Intel Graphics (3 Xe)
- iGPU clock
- 1,800 MHz
Memory
- Memory support
- DDR5-6400
- Max memory
- 256 GB
Benchmarks
- Geekbench 6 (single)
- 2,762Top 33%
- Geekbench 6 (multi)
- 14,233Top 30%
- Cinebench R23 (single)
- 1,941Top 26%
- Cinebench R23 (multi)
- 26,001Top 12%
- PassMark
- 47,051Top 8%
Quick answers
Is the Intel Core Ultra 7 251HX good in 2026?
The Intel Core Ultra 7 251HX earns an Inno Score of 62.6/100 (“Good”) based on its specs and benchmark results. The Core Ultra 7 251HX is Intel's Arrow Lake-HX refresh for mid-range gaming laptops, pairing 6 Lion Cove P-cores with 12 Skymont E-cores on a 3nm die. In review testing it lands just behind AMD's older Ryzen 9 7845HX in multi-core work, with a 30MB shared cache and DDR5-6400 support carried over from the platform's 2025 debut.
What are the key specs of the Intel Core Ultra 7 251HX?
Cores: 18 · Threads: 18 · Boost clock: 5.1 GHz · Base TDP: 55 W
What are the closest alternatives to the Intel Core Ultra 7 251HX?
Its closest rivals on InnoReviews are Apple M3 Pro (12-core), AMD Ryzen AI 7 450, Intel Core i9-14900HX — open the comparison pages for a spec-by-spec breakdown.
