Home > CPU Comparison > Core Ultra 7 265H or Core Ultra 7 251HX: what's better?

Intel Core Ultra 7 265H vs Ultra 7 251HX

70 out of 100
Intel Core Ultra 7 265H
VS
75 out of 100
Intel Core Ultra 7 251HX
Intel Core Ultra 7 265H
Intel Core Ultra 7 251HX

We compared two laptop CPUs: the 2.2 GHz Intel Core Ultra 7 265H with 16-cores against the 2.9 GHz Ultra 7 251HX with 18-cores. On this page, you'll find out which processor has better performance in benchmarks, games and other useful information.

  1. Review
  2. Differences
  3. Performance
  4. Specs
  5. Comments

Review

General overview and comparison of the processors
Single-Core Performance
Performance in single-threaded apps and benchmarks
Multi-Core Performance
Measure performance when all cores are involved
Power Efficiency
The efficiency score of power consumption
Integrated Graphics
iGPU capabilities for gaming and 3D-intensive tasks
NanoReview Final Score
Choose your main usage scenario to recalculate the Final Score and see which CPU suits your needs.
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Key Differences

What are the key differences between 251HX and 265H
Advantages of Intel Core Ultra 7 265H
  • More powerful Arc Graphics 140T integrated graphics: 4.7 vs 1.8 TFLOPS
  • 4% higher Turbo Boost frequency (5.3 GHz vs 5.1 GHz)
Advantages of Intel Core Ultra 7 251HX
  • Newer - released 1 year and 3 months later
  • Unlocked multiplier
  • Supports up to 256 GB DDR5-6400 RAM
  • Has 6 MB larger L3 cache size, helping fully utilize a high-end GPU in gaming
  • Has 2 more physical cores

Test in Benchmarks

Comparing the performance of CPUs across various tasks
CPU:
Core Ultra 7 265H
vs
Core Ultra 7 251HX

Cinebench

Reputable cross-platform benchmark for high-performance processors
Cinebench 2024 (Single)
Cinebench 2024 (Multi)
Cinebench Scores (118th and 46th place)
Submit your benchmark results

GeekBench v6

The new version of this benchmark emulates common operations often used in real-world apps
Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
File compression 1310 MB/sec -
Clang compilation 122.7 Klines/sec -
HTML 5 Browser 405.7 pages/sec -
PDF Renderer 467.8 Mpixels/sec -
Text processing 325.4 pages/sec -
Background blur 66.5 images/sec -
Photo processing 150.8 images/sec -
Ray tracing 24.4 Mpixels/sec -
Sources: GeekBench [1], [2]

PassMark

Synthetic test that focuses on raw computational performance for low-level functions
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
Integer math 85.4 GOps/sec 122 GOps/sec
Floating point math 108.9 GOps/sec 152.1 GOps/sec
Find prime numbers 335M Primes/sec 440M Primes/sec
Random string sorting 40.7M Strings/sec 61.6M Strings/sec
Data encryption 26 GBytes/sec 39.2 GBytes/sec
Data compression 334.4 MBytes/sec 512.7 MBytes/sec
Physics 2493 Frames/sec 2500 Frames/sec
Extended instructions 26.8B Matrices/sec 39.9B Matrices/sec
Sources: PassMark [3], [4] – 1114 & 10 samples

Blender

3D rendering test that measures CPU performance in 3D modeling tasks (uses all cores)
Blender CPU

Performance Per Watt

Shows the score you get per each watt of PL1 TDP
Cinebench 2024 / Watt 41.1 PPW 32 PPW
Geekbench 6 Multi / Watt 550.3 PPW 277.8 PPW
Passmark CPU Mark / Watt 1214.3 PPW 849.6 PPW
Blender / Watt 8.44 PPW -
These are rough calculations, as most CPUs surpass PL1 TDP wattage even in multicore workloads.

Specifications

Full technical specification of Intel Core Ultra 7 265H and Ultra 7 251HX

General

Vendor Intel Intel
Released January 6, 2025 April 1, 2026
Type Laptop Laptop
Instruction Set x86-64 x86-64
Codename Arrow Lake Arrow Lake
Model number 265H 251HX
Integrated GPU Arc Graphics 140T Arc Graphics (4-Cores)
Rival Equivalent - AMD Ryzen 7 260 -
Intel CPU rating (42nd and 27th place)

CPU

Performance Cores
P-Cores 6 6
P-Threads 6 6
Base Frequency (P) 2.2 GHz 2.9 GHz
Turbo Boost Frequency (P) 5.3 GHz 5.1 GHz
Efficient Cores
E-Cores 10 12
E-Threads 10 12
Base Frequency (E) 1.7 GHz 2.5 GHz
Turbo Boost Frequency (E) 4.5 GHz 4.5 GHz
Total
Total Cores 16 18
Total Threads 16 18
Bus Frequency 100 MHz 100 MHz
Multiplier 22x 29x
L1 Cache 192K (per core) 192K (per core)
L2 Cache 2MB (per core) 2MB (per core)
L3 Cache 24MB (shared) 30MB (shared)
Unlocked Multiplier No Yes

Package

Fabrication Process 3 nm 3 nm
TDP (PL1) 20-28 W (configurable) 45-55 W (configurable)
Max. Boost TDP (PL2) 115 W 160 W
Socket FCBGA-2049 FCBGA-2114
Peak Temperature 110°C 105°C
Laptop processors ranking (51st and 30th place)

iGPU

Integrated Graphics Arc Graphics 140T Arc Graphics (4-Cores)
GPU Base Clock 300 MHz 300 MHz
GPU Boost Clock 2300 MHz 1800 MHz
Shading Units 1024 512
TMUs 64 32
ROPs 32 16
Execution Units 8 64
TGP 35 W 14 W
iGPU FLOPS
Core Ultra 7 265H +161%
4.7 TFLOPS
Core Ultra 7 251HX
1.8 TFLOPS
More info: Arc iGPU (4-Cores) compared to Arc 140T

Memory Support

Memory Types - LPDDR5-8400
- LPDDR5x-8400
- DDR5-6400		 - DDR5-6400
Max. Memory Size 128 GB 256 GB
Memory Channels 2 2
Max. Memory Bandwidth - 102.4 GB/s
ECC Support No No

Misc

Official Site Intel Core Ultra 7 265H official page Intel Core Ultra 7 251HX official page
PCI Express Version 5.0 5.0
PCI Express Lanes 28 24

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Competitors

1. Intel Core Ultra 7 251HX vs AMD Ryzen 7 250
2. Intel Core Ultra 7 251HX vs AMD Ryzen AI 7 350
3. Intel Core Ultra 7 251HX vs AMD Ryzen 7 H 255
4. Intel Core Ultra 7 251HX vs Intel Core Ultra 7 255H
5. Intel Core Ultra 7 251HX vs AMD Ryzen 7 8745HS
6. Intel Core Ultra 7 265H vs Intel Core Ultra 9 285H
7. Intel Core Ultra 7 265H vs Intel Core Ultra 7 356H
8. Intel Core Ultra 7 265H vs Intel Core Ultra 7 255H
9. Intel Core Ultra 7 265H vs Intel Core Ultra 7 255HX (1)
10. Intel Core Ultra 7 265H vs Intel Core Ultra 7 165H
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Comments

So which CPU will you choose: Intel Core Ultra 7 251HX or Ultra 7 265H?
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