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Core Ultra 5 245K vs Core Ultra 7 255HX

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Performance score

Core Ultra 5 245K 2024, $309 · 14/14 cores/threads, 125 W
60.91
Core Ultra 7 255HX 2025 · 20/20 cores/threads
61.11

Core Ultra 5 245K and Core Ultra 7 255HX are almost equally fast (under 3% apart) — choose by price, socket and platform.

The score is our own estimate from the specs (cores, threads, clocks, architecture generation), not a benchmark run. 100 = the fastest CPU in our database.

Real tests

What the test measures

Blender is a popular free 3D graphics program. The test makes the device render three ready-made 3D scenes (light, shadows, reflections) and counts how many render passes it finishes per minute. The higher the number, the faster the device handles heavy work: 3D, video editing, photo processing. On a CPU the test loads all cores at once, so it shows the chip's full power; on a graphics card it shows its compute strength.

CPU rendering (Blender)

faster than 90% of tested · runs: 25

faster than 92% of tested · runs: 40

Median of real test runs on users' computers. It does not show FPS in games. Data updated: 31.10.2026.

Overview

Core Ultra 5 245KCore Ultra 7 255HX
Score (0–100) 60.91 61.11
Ranking position 34 32
Price/performance (0–100) 70.74 no data
Power efficiency (0–100) 25.46 no data
Type Desktop Laptop
Manufacturer Intel Intel
Architecture Arrow Lake Arrow Lake
Release date 2024-10-24 Q2 2025
Launch price $309 no data

Specifications

Core Ultra 5 245KCore Ultra 7 255HX
Cores 14 20
Threads 14 20
P + E cores 6 + 8 8 + 12
Base clock 4.2 GHz no data
Boost clock 5.2 GHz 5.2 GHz
L2 cache 26 MB no data
L3 cache 24 MB 30 MB
Process node 3 nm no data
Unlocked multiplier yes no
Integrated graphics Intel Graphics no
NPU (AI accelerator) no no

Compatibility

Core Ultra 5 245KCore Ultra 7 255HX
Socket LGA1851 no data
TDP 125 W no data
Max temperature 105 °C no data

Memory and PCI Express

Core Ultra 5 245KCore Ultra 7 255HX
Memory type DDR5-6400 no data
Memory channels 2 no data
Max memory 256 GB no data
PCI Express version 5.0 no data
PCIe lanes 24 no data

Pros and cons

Core Ultra 5 245K

  • has integrated graphics (Intel Graphics)
  • unlocked multiplier (can be overclocked)

Core Ultra 7 255HX

  • more cores: 20 vs 14
  • more threads: 20 vs 14
  • bigger L3 cache: 30 MB vs 24 MB
  • newer: released in 2025

Other comparisons

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