Intel Core Ultra 7 255H vs Intel Core i9 14900K

Compared 2 processors: Intel Core Ultra 7 255H, vs Intel Core i9 14900K. Below are specs, tests, pros and cons for each device

Review

Key Specs Intel Core Ultra 7 255H and Intel Core i9 14900K
Single-Thread Perf.
Single-Core Benchmark Score
Multi-Thread Perf.
Multi-Core Benchmark Score
Energy Efficiency
Chip Power Efficiency
Integrated Graphics
iGPU Performance in Games & 3D
NanoReview Score
Overall score by NanoReview

Tests & specs

Specs & test comparison

Benchmarks

CPU performance comparison across tasks
Cinebench R23
Cinebench R23 (Single-Core)
Intel Core Ultra 7 255H
2009
Intel Core i9 14900K
2293
Cinebench R23 (Multi-Core)
Intel Core Ultra 7 255H
18689
Intel Core i9 14900K
40400
Cinebench 2024
Cinebench 2024 (Single-Core)
Intel Core Ultra 7 255H
125
Intel Core i9 14900K
128
Cinebench 2024 (Single-Core)
Intel Core Ultra 7 255H
1028
Intel Core i9 14900K
2075
PassMark
PassMark CPU (Single-Core)
Intel Core Ultra 7 255H
n/a
Intel Core i9 14900K
4711
PassMark CPU (Multi-Core)
Intel Core Ultra 7 255H
n/a
Intel Core i9 14900K
59102
Integer Mathn/a211.8 GOps/s
Floating-Point Mathn/a153.9 GOps/s
Prime Number Searchn/a233 M primes/s
Random String Sortn/a87.5 M strings/s
Data Encryptionn/a47.2 GB/s
Data Compressionn/a800.1 MB/s
Physicsn/a3174 frames/s
Extended Instructionsn/a456 M matrices/s
GeekBench v6
Geekbench 6 (Single-Core)
Intel Core Ultra 7 255H
2725
Intel Core i9 14900K
3171
Geekbench 6 (Multi-Core)
Intel Core Ultra 7 255H
15123
Intel Core i9 14900K
22629
File Compression1270 MB/s1940 MB/s
Clang Compilation103.2 KLines/s194.6 KLines/s
HTML5 Browser399 pages/s589.2 pages/s
PDF Rendering443.6 MP/sec638.4 MP/sec
Text Processing283.7 pages/s318.7 pages/s
Background Blur62.4 frames/s71.7 frames/s
Photo Processing144.8 frames/s191.6 frames/s
Ray Tracing24 MP/sec41.7 MP/sec

Blender

Real-world 3D modeling test
Blender CPU
Intel Core Ultra 7 255H
n/a
Intel Core i9 14900K
512.57

Performance/Watt

Points per watt of PL1 TDP
Geekbench 6 Multi / W 540.1 PPW 181 PPW
PassMark CPU / W n/a 472.8 PPW
Cinebench 2024 / W 36.7 PPW 16.6 PPW
Blender / W n/a 4.1 PPW

General Info

Manufacturer Intel Intel
Announced January, 6, 2025 October, 16, 2023
Type Laptop use PC use
Architecture x86-64 x86-64
Codename Arrow Lake Raptor Lake Refresh
Model number 255H i9-14900K
Integrated GPU Arc Graphics 140T UHD Graphics 770

Processor

Performance cores
Cores 6 8
Threads 6 16
Frequency 2.0 GHz 3.2 GHz
Max Frequency (Turbo) 5.1 GHz 6 GHz
Efficiency cores
Cores1016
Threads1016
Frequency1.5 GHz2.4 GHz
Max Frequency (Turbo)4.4 GHz4.4 GHz
General
Cores count1624
Threads count1632
Bus frequency100 MHz100 MHz
Multiplier20x32x
L1 cache112 KB/core80 KB/core
L2 cache2000 KB/core2000 KB/core
L3 Cache24 MB total36 MB total
Unlocked multiplierNoYes

Package

Process tech. 3 nm 10 nm
Power (TDP) 20-28 W 125 W
Max TDP (Boost) 115 W 253 W
Socket FCBGA-2049 LGA-1700
Critical temp. 110 °C 100 °C

Memory Support

Memory Type - LPDDR5-8400
- LPDDR5x-8400
- DDR5-6400
- DDR5-5600
- DDR4-3200
Max Size 128 GB 192 GB
Channels 2 2
ECC support No Yes
Max memory bandwidth n/a 89.6 GB

Other

PCIe Version 5.0 5.0
Max PCIe Lanes 28 20

Results

After analyzing the data, we consider Intel Core i9 14900K the clear winner in this comparison.

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