Home > CPU Comparison > Core Ultra X7 358H or Core Ultra 7 255H: what's better?

Intel Core Ultra X7 358H vs Ultra 7 255H

71 out of 100
Intel Core Ultra X7 358H
VS
68 out of 100
Intel Core Ultra 7 255H
Intel Core Ultra X7 358H
Intel Core Ultra 7 255H

We compared two 16-core laptop CPUs: the 1.9 GHz Intel Core Ultra X7 358H against the 2.0 GHz Ultra 7 255H. 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 (2)

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 358H
Advantages of Intel Core Ultra X7 358H
  • Newer - released 1 year later
  • More powerful Intel Arc B390 integrated graphics: 7.7 vs 4.6 TFLOPS
  • More modern manufacturing process – 2 versus 3 nanometers
Advantages of Intel Core Ultra 7 255H
  • Has 6 MB larger L3 cache size, helping fully utilize a high-end GPU in gaming
  • Supports up to 128 GB LPDDR5-8400 RAM
  • More than 10Β° C higher critical temperature
  • 6% higher Turbo Boost frequency (5.1 GHz vs 4.8 GHz)

Test in Benchmarks

Comparing the performance of CPUs across various tasks
CPU:
Core Ultra X7 358H
vs
Core Ultra 7 255H

Cinebench

Reputable cross-platform benchmark for high-performance processors
Cinebench 2024 (Single)
Cinebench 2024 (Multi)
Cinebench 2026 (Single) 502 -
Cinebench 2026 (Multi) 4689 -
Cinebench Scores (126th and 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 1210 MB/sec 1270 MB/sec
Clang compilation 98.2 Klines/sec 103.2 Klines/sec
HTML 5 Browser 371.3 pages/sec 399 pages/sec
PDF Renderer 368 Mpixels/sec 443.6 Mpixels/sec
Text processing 293 pages/sec 283.7 pages/sec
Background blur 59.2 images/sec 62.4 images/sec
Photo processing 118.3 images/sec 144.8 images/sec
Ray tracing 19.7 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 82.8 GOps/sec 78.1 GOps/sec
Floating point math 103.3 GOps/sec 98.9 GOps/sec
Find prime numbers 336M Primes/sec 303M Primes/sec
Random string sorting 40.2M Strings/sec 36.1M Strings/sec
Data encryption 25.9 GBytes/sec 23.4 GBytes/sec
Data compression 331.3 MBytes/sec 299.1 MBytes/sec
Physics 3011 Frames/sec 2251 Frames/sec
Extended instructions 27.2B Matrices/sec 23.8B Matrices/sec
Sources: PassMark [3], [4] – 334 & 2020 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 44.6 PPW 37.5 PPW
Geekbench 6 Multi / Watt 682.5 PPW 540.1 PPW
Passmark CPU Mark / Watt 1346.9 PPW 1097.3 PPW
Blender / Watt 11.27 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 X7 358H
DateBenchmarkResult
πŸ“˜ 2026-09-05 -> asterismxGeekbench 6 CPU2910 / 17150
πŸ“˜ 2026-09-05 -> asterismxCinebench 2024126 / 1182
πŸ“˜ 2026-09-05 -> asterismxCinebench 20260 / 4753
Add View all (3)
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 X7 358H 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 358H 255H
Integrated GPU Arc B390 Arc Graphics 140T
Rival Equivalent - - AMD Ryzen AI 7 350
Intel CPU rating (38th and 50th place)

CPU

Performance Cores
P-Cores 4 6
P-Threads 4 6
Base Frequency (P) 1.9 GHz 2.0 GHz
Turbo Boost Frequency (P) 4.8 GHz 5.1 GHz
Efficient Cores
E-Cores 12 10
E-Threads 12 10
Base Frequency (E) 1.5 GHz 1.5 GHz
Turbo Boost Frequency (E) 3.5 GHz 4.4 GHz
Total
Total Cores 16 16
Total Threads 16 16
Bus Frequency 100 MHz 100 MHz
Multiplier 19x 20x
L1 Cache 192K (per core) 192K (per core)
L2 Cache 3MB (per core) 2MB (per core)
L3 Cache 18MB (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) 80 W 115 W
Socket FCBGA2540 FCBGA-2049
Peak Temperature 100Β°C 110Β°C
Laptop processors ranking (46th and 61st place)

iGPU

Integrated Graphics Intel Arc B390 Arc Graphics 140T
GPU Base Clock 300 MHz 300 MHz
GPU Boost Clock 2500 MHz 2250 MHz
Shading Units 1536 1024
TMUs 48 64
ROPs 24 32
Execution Units 12 8
TGP 30 W 35 W
iGPU FLOPS
Core Ultra X7 358H +67%
7.7 TFLOPS
Core Ultra 7 255H
4.6 TFLOPS
More info: Arc 140T compared to Arc B390

Memory Support

Memory Types - LPDDR5X-9600 - LPDDR5-8400
- LPDDR5x-8400
- DDR5-6400
Max. Memory Size 96 GB 128 GB
Memory Channels 2 2
Max. Memory Bandwidth 153.6 GB/s -
ECC Support No No

Misc

Official Site Intel Core Ultra X7 358H 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
20 (54.1%)
17 (45.9%)
Total votes: 37

Competitors

1. Intel Core Ultra X7 358H vs Apple M5 Pro (15-Core)
2. Intel Core Ultra X7 358H vs Intel Core Ultra 5 338H
3. Intel Core Ultra X7 358H vs AMD Ryzen AI 9 HX 470
4. Intel Core Ultra X7 358H vs Intel Core Ultra 7 356H
5. Intel Core Ultra X7 358H vs Apple M5 (10-Core) (3)
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 7 350
Compare other CPUs (460+)

Comments

So which CPU will you choose: Intel Core Ultra 7 255H or Ultra X7 358H?
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ComputerNerd January 28, 2026 at 08:04 PM
The new X7 358H CPU is a marginal improvement in the CPU performance from the previous iteration, but a noticeable upgrade in battery life and iGPU. Casual gamers and travelers will love it.
+6 Reply
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KingDStefan February 4, 2026 at 04:31 PM
CPU performance is a significant improvement because of perf/W at same the TDP especially in low TDP which will benefit the battery life and overall stability. And yes the iGPU is a beast, FH5 101FPS at 22W vs RTX 4050 131FPS at 80W.
+7 Reply
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