Intel Core Ultra 7 255HX vs AMD Ryzen 7 PRO 7840U

VS

Intel Core Ultra 7 255HX

AMD Ryzen 7 PRO 7840U

We compared two laptop CPUs: Intel Core Ultra 7 255HX with 20 cores 2.4GHz and AMD Ryzen 7 PRO 7840U with 8 cores 3.3GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

Intel Core Ultra 7 255HX 's Advantages

Released 1 years and 7 months late

Larger memory bandwidth (102.4GB/s vs 89.6GB/s)

Newer PCIe version (5 vs 4.0)

Larger L3 cache size (24MB vs 16MB)

More modern manufacturing process (3nm vs 4nm)

AMD Ryzen 7 PRO 7840U 's Advantages

Higher specification of memory (7500 vs 6400)

Higher base frequency (3.3GHz vs 2.4GHz)

Lower TDP (30W vs 55W)

Score

Intel Core Ultra 7 255HX

VS

AMD Ryzen 7 PRO 7840U

General Parameters

Jan 2025

Release Date

Jun 2023

Intel

Manufacturer

AMD

Laptop

Type

Laptop

-

Instruction Set

x86-64

Arrow Lake

Core Architecture

Zen 4 (Phoenix)

Intel Socket 1851

Socket

FP8

Arc Xe-LPG

Integrated Graphics

Radeon 780M

Ultra 7 (Arrow Lake)

Generation

-

Package

-

Transistor Count

25 billions

3 nm

Manufacturing Process

4 nm

17-55 W

Power Consumption

15-30 W

100 °C

Peak Operating Temperature

100 °C

Intel

Foundry

-

CPU Performance

8

Performance Cores

8

Performance Core Threads

16

2.4 GHz

Performance Core Base Frequency

3.3 GHz

5.2 GHz

Performance Core Turbo Frequency

5.1 GHz

12

Efficiency Cores

-

12

Efficiency Core Threads

-

1.8 GHz

Efficiency Core Base Frequency

-

4.5 GHz

Efficiency Core Turbo Frequency

-

20

Total Core Count

8

20

Total Thread Count

16

100 MHz

Bus Frequency

100 MHz

24

Multiplier

33

112 KB per core

L1 Cache

64 K per core

23 MB

L2 Cache

8 MB

24 MB shared

L3 Cache

16 MB

No

Unlocked Multiplier

No

1

SMP

-

Memory Parameters

DDR5-6400

Memory Types

DDR5-5600, LPDDR5x-7500

256 GB

Max Memory Size

256 GB

2

Max Memory Channels

2

102.4 GB/s

Max Memory Bandwidth

89.6 GB/s

Yes

ECC Memory Support

No

Graphics Card Parameters

true

Integrated Graphics

true

-

GPU Base Frequency

800 MHz

1900 MHz

GPU Max Dynamic Frequency

2700 MHz

-

Shader Units

768

-

Texture Units

48

-

Raster Operation Units

32

64

Execution Units

12

-

Power Consumption

15 W

-

Max Resolution

7680x4320 - 60 Hz

-

Graphics Performance

4.15 TFLOPS

AI Accelerator

-

NPU

AMD Ryzen™ AI

-

Theoretical performance

10 TOPS

Miscellaneous

Official Website

AMD Ryzen 7 PRO 7840U

5

PCIe Version

4.0

PCIe Lanes

20

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