Home > CPU Comparison > Core Ultra 7 355 or Core Ultra 7 255H: what's better?

Intel Core Ultra 7 355 vs Ultra 7 255H

60 out of 100
Intel Core Ultra 7 355
VS
68 out of 100
Intel Core Ultra 7 255H
Intel Core Ultra 7 355
Intel Core Ultra 7 255H

We compared two laptop CPUs: the 2.3 GHz Intel Core Ultra 7 355 with 8-cores against the 2.0 GHz Ultra 7 255H with 16-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 255H and 355
Advantages of Intel Core Ultra 7 355
  • Newer - released 1 year later
  • More modern manufacturing process – 2 versus 3 nanometers
Advantages of Intel Core Ultra 7 255H
  • Has 8 more physical cores
  • Has 12 MB larger L3 cache size, helping fully utilize a high-end GPU in gaming
  • More powerful Arc Graphics 140T integrated graphics: 4.6 vs 2.6 TFLOPS
  • More than 10Β° C higher critical temperature
  • 9% higher Turbo Boost frequency (5.1 GHz vs 4.7 GHz)

Test in Benchmarks

Comparing the performance of CPUs across various tasks
CPU:
Core Ultra 7 355
vs
Core Ultra 7 255H

Cinebench

Reputable cross-platform benchmark for high-performance processors
Cinebench 2024 (Single)
Cinebench 2024 (Multi)
Cinebench Scores (#143rd 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 1050 MB/sec 1270 MB/sec
Clang compilation 74.6 Klines/sec 103.2 Klines/sec
HTML 5 Browser 264 pages/sec 399 pages/sec
PDF Renderer 293.7 Mpixels/sec 443.6 Mpixels/sec
Text processing 293.2 pages/sec 283.7 pages/sec
Background blur 50.3 images/sec 62.4 images/sec
Photo processing 122.1 images/sec 144.8 images/sec
Ray tracing 15.4 Mpixels/sec 24 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 43.9 GOps/sec 78.1 GOps/sec
Floating point math 60.1 GOps/sec 98.9 GOps/sec
Find prime numbers 187M Primes/sec 303M Primes/sec
Random string sorting 23.5M Strings/sec 36.1M Strings/sec
Data encryption 14.8 GBytes/sec 23.4 GBytes/sec
Data compression 186.1 MBytes/sec 299.1 MBytes/sec
Physics 1901 Frames/sec 2251 Frames/sec
Extended instructions 17.2B Matrices/sec 23.8B Matrices/sec
Sources: PassMark [3], [4] – 143 & 2020 samples

Blender

3D rendering test that measures CPU performance in 3D modeling tasks (uses all cores)
Blender CPU
Core Ultra 7 355
151.38
Core Ultra 7 255H +82%
275.27

Performance Per Watt

Shows the score you get per each watt of PL1 TDP
Cinebench 2024 / Watt 30.4 PPW 37.5 PPW
Geekbench 6 Multi / Watt 456.7 PPW 540.1 PPW
Passmark CPU Mark / Watt 810.4 PPW 1097.3 PPW
Blender / Watt 6.06 PPW 9.83 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 7 355
No benchmark results yet
Add
Intel Core Ultra 7 255H
DateBenchmarkResult
πŸ“˜ 2026-09-06 -> xnullcodeGeekbench 6 CPU3009 / 11440
πŸ“˜ 2026-08-15 -> xnullcodeGeekbench 6 CPU2849 / 11877
πŸ“˜ 2026-08-15 -> xnullcodeGeekbench 6 CPU2848 / 11898
πŸ“˜ 2026-08-15 -> xnullcodeCinebench 20260 / 3496
πŸ“˜ 2026-08-15 (xnullcode)Geekbench 6 CPU2708 / 11477
Add View all (16)

Specifications

Full technical specification of Intel Core Ultra 7 355 and Ultra 7 255H

General

Vendor Intel Intel
Released January 5, 2026 January 6, 2025
Type Laptop Laptop
Instruction Set x86-64 x86-64
Codename Panther Lake Arrow Lake
Model number 355 255H
Integrated GPU Xe3 Graphics Arc Graphics 140T
Rival Equivalent - - AMD Ryzen AI 7 350
Intel CPU rating (78th and 50th place)

CPU

Performance Cores
P-Cores 4 6
P-Threads 4 6
Base Frequency (P) 2.3 GHz 2.0 GHz
Turbo Boost Frequency (P) 4.7 GHz 5.1 GHz
Efficient Cores
E-Cores 4 10
E-Threads 4 10
Base Frequency (E) 1.7 GHz 1.5 GHz
Turbo Boost Frequency (E) 3.5 GHz 4.4 GHz
Total
Total Cores 8 16
Total Threads 8 16
Bus Frequency 100 MHz 100 MHz
Multiplier 23x 20x
L1 Cache - 192K (per core)
L2 Cache 2MB (shared) 2MB (per core)
L3 Cache 12MB (shared) 24MB (shared)
Unlocked Multiplier No No

Package

Fabrication Process 2 nm 3 nm
TDP (PL1) 15-25 W (configurable) 20-28 W (configurable)
Max. Boost TDP (PL2) 55 W 115 W
Socket FCBGA2540 FCBGA-2049
Peak Temperature 100Β°C 110Β°C
Laptop processors ranking (96th and 61st place)

iGPU

Integrated Graphics Intel Xe3 Graphics Arc Graphics 140T
GPU Base Clock 300 MHz 300 MHz
GPU Boost Clock 2500 MHz 2250 MHz
Shading Units 512 1024
TMUs 32 64
ROPs 16 32
Execution Units 4 8
TGP 25 W 35 W
iGPU FLOPS
Core Ultra 7 355
2.6 TFLOPS
Core Ultra 7 255H +77%
4.6 TFLOPS
More info: Arc 140T compared to Xe3 Graphics (4-Core)

Memory Support

Memory Types - LPDDR5X-7467
- DDR5-6400		 - LPDDR5-8400
- LPDDR5x-8400
- DDR5-6400
Max. Memory Size 128 GB 128 GB
Memory Channels 2 2
Max. Memory Bandwidth 89.6 GB/s -
ECC Support No No

Misc

Official Site Intel Core Ultra 7 355 official page Intel Core Ultra 7 255H official page
PCI Express Version 5.0 5.0
PCI Express Lanes 12 28

Cast your vote

Choose between two processors
4 (16%)
21 (84%)
Total votes: 25

Competitors

1. Intel Core Ultra 7 355 vs Intel Core Ultra 7 258V
2. Intel Core Ultra 7 355 vs Intel Core Ultra 7 365
3. Intel Core Ultra 7 355 vs Apple M5 (10-Core) (1)
4. Intel Core Ultra 7 355 vs AMD Ryzen AI 7 350
5. Intel Core Ultra 7 255H vs AMD Ryzen AI 7 350
6. Intel Core Ultra 7 255H vs Intel Core Ultra 7 155H
7. Intel Core Ultra 7 255H vs Intel Core Ultra 7 268V (1)
8. Intel Core Ultra 7 255H vs Intel Core Ultra 7 258V
9. Intel Core Ultra 7 255H vs Intel Core Ultra 5 225H (6)
10. Intel Core Ultra 7 255H vs AMD Ryzen AI 9 HX 370 (1)
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Comments

So which CPU will you choose: Intel Core Ultra 7 255H or Ultra 7 355?
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