Intel Celeron 6305 vs Intel Core Ultra 7 255HX

VS

Intel Celeron 6305

Intel Core Ultra 7 255HX

We compared two laptop CPUs: Intel Celeron 6305 with 2 cores 1.8GHz 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 Celeron 6305 's Advantages

Lower TDP (15W vs 55W)

Intel Core Ultra 7 255HX 's Advantages

Released 4 years and 4 months late

Higher specification of memory (6400 vs 3733)

Larger memory bandwidth (102.4GB/s vs 51.2GB/s)

Newer PCIe version (5 vs 3.0)

Higher base frequency (2.4GHz vs 1.8GHz)

Larger L3 cache size (24MB vs 4MB)

More modern manufacturing process (3nm vs 10nm)

Score

Intel Celeron 6305

VS

Intel Core Ultra 7 255HX

General Parameters

Sep 2020

Release Date

Jan 2025

Intel

Manufacturer

Intel

Laptop

Type

Laptop

x86-64

Instruction Set

-

Tiger Lake

Core Architecture

Arrow Lake

6305

Processor Number

-

BGA-1449

Socket

Intel Socket 1851

UHD Graphics Xe G4 48 EUs

Integrated Graphics

Arc Xe-LPG

-

Generation

Ultra 7 (Arrow Lake)

Package

10 nm

Manufacturing Process

3 nm

15 W

Power Consumption

17-55 W

100 °C

Peak Operating Temperature

100 °C

-

Foundry

Intel

CPU Performance

2

Performance Cores

8

2

Performance Core Threads

8

1.8 GHz

Performance Core Base Frequency

2.4 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

2

Total Core Count

20

2

Total Thread Count

20

100 MHz

Bus Frequency

100 MHz

18x

Multiplier

24

96 K per core

L1 Cache

112 KB per core

1256 K per core

L2 Cache

23 MB

4 MB shared

L3 Cache

24 MB shared

No

Unlocked Multiplier

No

-

SMP

1

Memory Parameters

DDR4-3200, LPDDR4x-3733

Memory Types

DDR5-6400

64 GB

Max Memory Size

256 GB

2

Max Memory Channels

2

51.2 GB/s

Max Memory Bandwidth

102.4 GB/s

No

ECC Memory Support

Yes

Graphics Card Parameters

true

Integrated Graphics

true

300 MHz

GPU Base Frequency

-

1250 MHz

GPU Max Dynamic Frequency

1900 MHz

384

Shader Units

-

24

Texture Units

-

12

Raster Operation Units

-

48

Execution Units

64

15 W

Power Consumption

-

0.84 TFLOPS

Graphics Performance

-

Miscellaneous

Intel Celeron 6305

Official Website

3.0

PCIe Version

5

-

PCIe Lanes

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