Home > CPU Comparison > Core Ultra 7 255HX or Core Ultra 5 245HX: what's better?

Intel Core Ultra 7 255HX vs Ultra 5 245HX

75 out of 100
Intel Core Ultra 7 255HX
VS
69 out of 100
Intel Core Ultra 5 245HX
Intel Core Ultra 7 255HX
Intel Core Ultra 5 245HX

We compared two laptop CPUs: the 2.4 GHz Intel Core Ultra 7 255HX with 20-cores against the 3.1 GHz Ultra 5 245HX with 14-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.
πŸ”Œ Usage Scenario:

Key Differences

What are the key differences between 245HX and 255HX
Advantages of Intel Core Ultra 7 255HX
  • Has 6 more physical cores
  • Has 6 MB larger L3 cache size, helping fully utilize a high-end GPU in gaming
  • Supports up to 256 GB DDR5-6400 RAM
  • More powerful Arc Graphics (4-Cores) integrated graphics: 1.9 vs 1.5 TFLOPS
  • 2% higher Turbo Boost frequency (5.2 GHz vs 5.1 GHz)

Test in Benchmarks

Comparing the performance of CPUs across various tasks
CPU:
Core Ultra 7 255HX
vs
Core Ultra 5 245HX

Cinebench

Reputable cross-platform benchmark for high-performance processors
Cinebench 2024 (Single)
Cinebench 2024 (Multi)
Cinebench Scores (48th and 73rd 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 1140 MB/sec 1030 MB/sec
Clang compilation 149.8 Klines/sec 147.3 Klines/sec
HTML 5 Browser 312.2 pages/sec 253 pages/sec
PDF Renderer 423.9 Mpixels/sec 327.9 Mpixels/sec
Text processing 335.6 pages/sec 327.4 pages/sec
Background blur 64.1 images/sec 70.8 images/sec
Photo processing 111.8 images/sec 87.7 images/sec
Ray tracing 31.1 Mpixels/sec 29.7 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 127 GOps/sec 92.2 GOps/sec
Floating point math 160.3 GOps/sec 120.7 GOps/sec
Find prime numbers 400M Primes/sec 359M Primes/sec
Random string sorting 62.4M Strings/sec 47.6M Strings/sec
Data encryption 39.4 GBytes/sec 30 GBytes/sec
Data compression 513.6 MBytes/sec 393.1 MBytes/sec
Physics 2916 Frames/sec 2526 Frames/sec
Extended instructions 41.1B Matrices/sec 31.2B Matrices/sec
Sources: PassMark [3], [4] – 976 & 22 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 32 PPW 26.9 PPW
Geekbench 6 Multi / Watt 328 PPW 261.1 PPW
Passmark CPU Mark / Watt 874.8 PPW 692.2 PPW
Blender / Watt 7.11 PPW -
These are rough calculations, as most CPUs surpass PL1 TDP wattage even in multicore workloads.

Recent User Tests

The latest benchmark tests that have been submitted by users
Intel Core Ultra 7 255HX
DateBenchmarkResult
πŸ“˜ 2026-06-05 (Levi)Geekbench 6 CPU2907 / 17742
πŸ“˜ 2025-12-25 (Junebug)Cinebench 2024131 / 1759
πŸ“˜ 2025-12-17 (balihardik009)Cinebench 2024131 / 1820
πŸ“˜ 2025-11-26 (Verbickisd)Cinebench 2024125 / 1666
πŸ“˜ 2025-11-24 (Abhi)Geekbench 6 CPU2823 / 17264
Add View all (5)
Intel Core Ultra 5 245HX
No benchmark results yet
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Specifications

Full technical specification of Intel Core Ultra 7 255HX and Ultra 5 245HX

General

Vendor Intel Intel
Released January 6, 2025 January 6, 2025
Type Laptop Laptop
Instruction Set x86-64 x86-64
Codename Arrow Lake Arrow Lake
Model number 255HX 245HX
Integrated GPU Arc Graphics (4-Cores) UHD Graphics Xe G4 (48 EU)
Rival Equivalent - AMD Ryzen AI Max Pro 380 -
Intel CPU rating (29th and 45th place)

CPU

Performance Cores
P-Cores 8 6
P-Threads 8 6
Base Frequency (P) 2.4 GHz 3.1 GHz
Turbo Boost Frequency (P) 5.2 GHz 5.1 GHz
Efficient Cores
E-Cores 12 8
E-Threads 12 8
Base Frequency (E) 1.8 GHz 2.6 GHz
Turbo Boost Frequency (E) 4.5 GHz 4.5 GHz
Total
Total Cores 20 14
Total Threads 20 14
Bus Frequency 100 MHz 100 MHz
Multiplier 24x 31x
L1 Cache 192K (per core) 192K (per core)
L2 Cache 2MB (per core) 3MB (per core)
L3 Cache 30MB (shared) 24MB (shared)
Unlocked Multiplier Yes Yes

Package

Fabrication Process 3 nm 3 nm
TDP (PL1) 45-55 W (configurable) 45-55 W (configurable)
Max. Boost TDP (PL2) 160 W 160 W
Socket FCBGA-2114 FCBGA-2114
Peak Temperature 105Β°C 105Β°C
Laptop processors ranking (33rd and 57th place)

iGPU

Integrated Graphics Arc Graphics (4-Cores) Intel UHD Graphics Xe G4 (48 EU)
GPU Base Clock 300 MHz 400 MHz
GPU Boost Clock 1850 MHz 1900 MHz
Shading Units 512 384
TMUs 32 24
ROPs 16 12
Execution Units 64 48
TGP 14 W 15 W
iGPU FLOPS
Core Ultra 7 255HX +27%
1.9 TFLOPS
Core Ultra 5 245HX
1.5 TFLOPS
More info: UHD Graphics Xe G4 (48 EU) compared to Arc iGPU (4-Cores)

Memory Support

Memory Types - DDR5-6400 - DDR5-6400
Max. Memory Size 256 GB 192 GB
Memory Channels 2 2
Max. Memory Bandwidth 102.4 GB/s 102.4 GB/s
ECC Support Yes Yes

Misc

Official Site Intel Core Ultra 7 255HX official page Intel Core Ultra 5 245HX official page
PCI Express Version 5.0 5.0
PCI Express Lanes 24 24

Cast your vote

Choose between two processors
5 (100%)
0 (0%)
Total votes: 5

Competitors

1. Intel Core Ultra 5 245HX vs AMD Ryzen 5 7535HS
2. Intel Core Ultra 5 245HX vs AMD Ryzen 5 8640HS
3. Intel Core Ultra 5 245HX vs Intel Core Ultra 5 245K
4. Intel Core Ultra 5 245HX vs Intel Core Ultra 7 265HX
5. Intel Core Ultra 5 245HX vs Intel Core Ultra 5 125H
6. Intel Core Ultra 7 255HX vs Intel Core Ultra 7 155H
7. Intel Core Ultra 7 255HX vs AMD Ryzen 7 8840HS
8. Intel Core Ultra 7 255HX vs AMD Ryzen AI 9 HX 370 (1)
9. Intel Core Ultra 7 255HX vs AMD Ryzen 7 260
10. Intel Core Ultra 7 255HX vs Intel Core Ultra 9 275HX
Compare other CPUs (460+)

Comments

So which CPU will you choose: Intel Core Ultra 5 245HX or Ultra 7 255HX?
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