Core™ Ultra 7 processor 251HX
G-Score 78 Overall Score
18 cores / 18 threads, up to 5.10 GHz, AI acceleration
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GeeCoolCPU Comparison
Core™ Ultra 7 Processor 255HX
G-Score 79 Overall Score
20 cores / 20 threads, up to 5.20 GHz, AI acceleration
VERDICT
Recommended Core™ Ultra 7 Processor 255HX
Both are viable. Core™ Ultra 7 Processor 255HX is slightly ahead overall; whether that matters depends on your apps. Spec sheet: up to 5.2 GHz, 20 / 20, 30 MB L3 cache—Core™ Ultra 7 Processor 255HX is built for sustained load, not just burst. If Value Index outranks everything, Core™ Ultra 7 processor 251HX is the honest pick. Narrow the lens to Compute Index before you argue with G-SCORE alone. Bottom line: treat “Recommended” as sort order—your main app index is still the judge.
Generated by GeeCool AI
Head-to-Head Specs
18 / 18
Cores
20 / 20
5.1 GHz
Clock
5.2 GHz
30 MB
Cache
30 MB
Six Index Comparison
Gaming Index
Game performanceBetter in this index Intel® Core™ Ultra 7 Processor 255HX
90
91
Core™ Ultra 7 processor 251HX Core™ Ultra 7 Processor 255HX
Align your pick with Gaming Index if frame stability matters more than spec-sheet core counts.
Content Creation Index
Editing, rendering & streamingBetter in this index Intel® Core™ Ultra 7 Processor 255HX
79
81
Core™ Ultra 7 processor 251HX Core™ Ultra 7 Processor 255HX
Creation workloads care about encode, render, and memory bandwidth—Content Creation Index reflects that mix.
Compute Index
Compilation & multithreaded workloadsBetter in this index Intel® Core™ Ultra 7 Processor 255HX
76
78
Core™ Ultra 7 processor 251HX Core™ Ultra 7 Processor 255HX
For dev work and multithreaded desktop tasks, prioritize Compute Index.
AI Capability
On-device AI workloadsBetter in this index —
81
81
Core™ Ultra 7 processor 251HX Core™ Ultra 7 Processor 255HX
Planning to run local models or AI tools? Compare AI Capability explicitly.
Efficiency Index
Performance per wattBetter in this index Intel® Core™ Ultra 7 Processor 255HX
92
96
Core™ Ultra 7 processor 251HX Core™ Ultra 7 Processor 255HX
Small builds, quiet systems, and always-on desktops should weigh Efficiency Index heavily.
Value Index
Capability vs platform costBetter in this index Intel® Core™ Ultra 7 processor 251HX
28
27
Core™ Ultra 7 processor 251HX Core™ Ultra 7 Processor 255HX
Value is not simply cheapest—Value Index measures capability against platform cost.
Key Differences
Spec Core™ Ultra 7 processor 251HX Core™ Ultra 7 Processor 255HX
硬件类型 CPU CPU
核心 / 线程 18 / 18 20 / 20
最高 Boost 5.1 GHz 5.2 GHz
L3 缓存 30 MB 30 MB
平台 FCBGA2114 FCBGA2114
内存支持 Up to DDR5 6400 MT/s Up to DDR5 6400 MT/s
Buying Choice
Why choose Core™ Ultra 7 processor 251HX?
- Balanced specs with stronger platform value
Why choose Core™ Ultra 7 Processor 255HX?
- Up to 5.20 GHz boost — stronger single-core bursts
- 20 cores / 20 threads — higher multithreaded throughput
- Efficiency-focused specs for quiet, cool builds
Left/right order follows slug order in the URL