Intel Core i5 9400H vs Intel Core Ultra 7 255HX

VS

Intel Core i5 9400H

Intel Core Ultra 7 255HX

We compared two laptop CPUs: Intel Core i5 9400H with 4 cores 2.5GHz and Intel Core Ultra 7 255HX with 20 cores 2.4GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

Intel Core i5 9400H 's Advantages

Higher base frequency (2.5GHz vs 2.4GHz)

Lower TDP (45W vs 55W)

Intel Core Ultra 7 255HX 's Advantages

Released 5 years and 9 months late

Higher specification of memory (6400 vs 2666)

Larger memory bandwidth (102.4GB/s vs 41.8GB/s)

Newer PCIe version (5 vs 3.0)

Larger L3 cache size (24MB vs 8MB)

More modern manufacturing process (3nm vs 14nm)

Score

Intel Core i5 9400H

VS

Intel Core Ultra 7 255HX

General Parameters

Apr 2019

Release Date

Jan 2025

Intel

Manufacturer

Intel

Laptop

Type

Laptop

x86-64

Instruction Set

-

Coffee Lake

Core Architecture

Arrow Lake

i5-9400H

Processor Number

-

BGA-1440

Socket

Intel Socket 1851

UHD Graphics 630

Integrated Graphics

Arc Xe-LPG

-

Generation

Ultra 7 (Arrow Lake)

Package

14 nm

Manufacturing Process

3 nm

45 W

Power Consumption

17-55 W

100 °C

Peak Operating Temperature

100 °C

-

Foundry

Intel

CPU Performance

4

Performance Cores

8

Performance Core Threads

8

2.5 GHz

Performance Core Base Frequency

2.4 GHz

4.3 GHz

Performance Core Turbo Frequency

5.2 GHz

-

Efficiency Cores

12

-

Efficiency Core Threads

12

-

Efficiency Core Base Frequency

1.8 GHz

-

Efficiency Core Turbo Frequency

4.5 GHz

4

Total Core Count

20

8

Total Thread Count

20

-

Bus Frequency

100 MHz

25x

Multiplier

24

32 K per core

L1 Cache

112 KB per core

256 K per core

L2 Cache

23 MB

8 MB shared

L3 Cache

24 MB shared

No

Unlocked Multiplier

No

-

SMP

1

Memory Parameters

DDR4-2666, LPDDR3-2133

Memory Types

DDR5-6400

128 GB

Max Memory Size

256 GB

2

Max Memory Channels

2

41.8 GB/s

Max Memory Bandwidth

102.4 GB/s

No

ECC Memory Support

Yes

Graphics Card Parameters

true

Integrated Graphics

true

350 MHz

GPU Base Frequency

-

1100 MHz

GPU Max Dynamic Frequency

1900 MHz

192

Shader Units

-

24

Texture Units

-

3

Raster Operation Units

-

24

Execution Units

64

15 W

Power Consumption

-

4096x2304 - 60 Hz

Max Resolution

-

0.38 TFLOPS

Graphics Performance

-

Miscellaneous

Intel Core i5 9400H

Official Website

3.0

PCIe Version

5

16

PCIe Lanes

SSE4.1, SSE4.2, AVX-2

Extended Instruction Set

-

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