Home > CPU Comparison > Core Ultra 9 285K or Core Ultra 9 275HX: what's better?

Intel Core Ultra 9 285K vs Ultra 9 275HX

91 out of 100
Intel Core Ultra 9 285K
VS
81 out of 100
Intel Core Ultra 9 275HX
Intel Core Ultra 9 285K
Intel Core Ultra 9 275HX

We compared two 24-core CPUs: the 3.7 GHz Intel Core Ultra 9 285K (desktop) against the 2.7 GHz Ultra 9 275HX (laptop). 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
The "iGPU" and "Power Efficiency" have a minor impact on the NanoReview Score for desktop CPU.
NanoReview Final Score
Choose your main usage scenario to recalculate the Final Score and see which CPU suits your needs.
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Value for money (Beta)

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Currency
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Key Differences

What are the key differences between 275HX and 285K
Advantages of Intel Core Ultra 9 285K
  • 13% faster in a single-core Geekbench v6 test - 3379 vs 3001 points
  • 2% higher Turbo Boost frequency (5.5 GHz vs 5.4 GHz)
Advantages of Intel Core Ultra 9 275HX
  • Supports up to 256 GB DDR5-6400 RAM

Test in Benchmarks

Comparing the performance of CPUs across various tasks
CPU:
Core Ultra 9 285K
vs
Core Ultra 9 275HX

Cinebench

Reputable cross-platform benchmark for high-performance processors
Cinebench 2024 (Single)
Cinebench 2024 (Multi)
Cinebench 2026 (Single) - 500
Cinebench 2026 (Multi) - 7832
Cinebench Scores (11th and 30th 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 1560 MB/sec 1480 MB/sec
Clang compilation 242.2 Klines/sec 216.2 Klines/sec
HTML 5 Browser 479.5 pages/sec 435.5 pages/sec
PDF Renderer 622.1 Mpixels/sec 545.5 Mpixels/sec
Text processing 371.2 pages/sec 344.8 pages/sec
Background blur 95.4 images/sec 78.6 images/sec
Photo processing 164.2 images/sec 156.4 images/sec
Ray tracing 52.3 Mpixels/sec 46.2 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 172.3 GOps/sec 155.2 GOps/sec
Floating point math 224.2 GOps/sec 191.1 GOps/sec
Find prime numbers 542M Primes/sec 448M Primes/sec
Random string sorting 94.9M Strings/sec 74.3M Strings/sec
Data encryption 57.7 GBytes/sec 47.1 GBytes/sec
Data compression 789.7 MBytes/sec 608.4 MBytes/sec
Physics 3933 Frames/sec 3335 Frames/sec
Extended instructions 62.3B Matrices/sec 47B Matrices/sec
Sources: PassMark [3], [4] – 8455 & 5997 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 18.1 PPW 35.3 PPW
Geekbench 6 Multi / Watt 184.8 PPW 371.8 PPW
Passmark CPU Mark / Watt 537.8 PPW 1013.7 PPW
Blender / Watt 4.44 PPW 6.54 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 9 285K
DateBenchmarkResult
πŸ“˜ 2026-06-17 (Olafur Torfi)Cinebench 2024142 / 2242
πŸ“˜ 2026-02-01 (aDamatGeek)Cinebench 2024142 / 2383
πŸ“˜ 2026-01-29 (GeneralJeep)Geekbench 6 CPU3134 / 21707
πŸ“˜ 2025-12-31 (Szymon919191)Cinebench 2024141 / 2261
πŸ“˜ 2025-12-26 (Bill)Geekbench 6 CPU3207 / 22197
Add View all (14)
Intel Core Ultra 9 275HX
DateBenchmarkResult
πŸ“˜ 2026-07-04 (dante)Cinebench 2024133 / 2062
πŸ“˜ 2026-07-04 (dante)Cinebench 20260 / 0
πŸ“˜ 2026-05-04 (Sujan)Cinebench 2024139 / 2318
πŸ“˜ 2026-05-03 (ToadyBoi)Cinebench 2024139 / 2290
πŸ“˜ 2026-04-10 (itsved4nt)Cinebench 2026500 / 7832
Add View all (23)

Specifications

Full technical specification of Intel Core Ultra 9 285K and Ultra 9 275HX

General

Vendor Intel Intel
Released October 11, 2024 January 6, 2025
Type Desktop Laptop
Instruction Set x86-64 x86-64
Codename Arrow Lake Arrow Lake
Model number 285K 275HX
Integrated GPU Arc iGPU (4-Cores) Arc Graphics (4-Cores)
Rival Equivalent - AMD Ryzen 9 9950X - AMD Ryzen 9 9850HX
Intel CPU rating (3rd and 18th place)

CPU

Performance Cores
P-Cores 8 8
P-Threads 8 8
Base Frequency (P) 3.7 GHz 2.7 GHz
Turbo Boost Frequency (P) 5.5 GHz 5.4 GHz
Efficient Cores
E-Cores 16 16
E-Threads 16 16
Base Frequency (E) 3.2 GHz 2.1 GHz
Turbo Boost Frequency (E) 4.6 GHz 4.6 GHz
Total
Total Cores 24 24
Total Threads 24 24
Bus Frequency 100 MHz 100 MHz
Multiplier 37x 27x
L1 Cache 192K (per core) 192K (per core)
L2 Cache 3MB (per core) 3MB (per core)
L3 Cache 36MB (shared) 36MB (shared)
Unlocked Multiplier Yes Yes

Package

Fabrication Process 3 nm 3 nm
TDP (PL1) 125 W 45-55 W (configurable)
Max. Boost TDP (PL2) 250 W 160 W
Socket FCLGA-1851 FCBGA-2114
Peak Temperature 105Β°C 105Β°C
Desktop CPU ranking (#8th place)

iGPU

Integrated Graphics Intel Arc iGPU (4-Cores) Arc Graphics (4-Cores)
GPU Base Clock 300 MHz 300 MHz
GPU Boost Clock 2000 MHz 1900 MHz
Shading Units 512 512
TMUs 32 32
ROPs 16 16
Execution Units 64 64
TGP 14 W 14 W
iGPU FLOPS
Core Ultra 9 285K +5%
2 TFLOPS
Core Ultra 9 275HX
1.9 TFLOPS
See: Intel Arc iGPU (4-Cores) benchmarks

Memory Support

Memory Types - DDR5-6400 - DDR5-6400
Max. Memory Size 192 GB 256 GB
Memory Channels 2 2
Max. Memory Bandwidth 102.4 GB/s 102.4 GB/s
ECC Support Yes No

Misc

Official Site Intel Core Ultra 9 285K official page Intel Core Ultra 9 275HX official page
PCI Express Version 5.0 5.0
PCI Express Lanes 24 24

Cast your vote

Choose between two processors
15 (28.8%)
37 (71.2%)
Total votes: 52

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5. Intel Core Ultra 9 275HX vs AMD Ryzen AI Max+ Pro 395
6. Intel Core Ultra 9 285K vs Intel Core i9 14900KS (8)
7. Intel Core Ultra 9 285K vs AMD Ryzen 9 9950X (35)
8. Intel Core Ultra 9 285K vs Intel Core i9 14900K (8)
9. Intel Core Ultra 9 285K vs AMD Ryzen 9 7950X3D (2)
10. Intel Core Ultra 9 285K vs Intel Core Ultra 7 265K (2)
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Comments

So which CPU will you choose: Intel Core Ultra 9 275HX or Ultra 9 285K?
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