AMD Ryzen 5 7645HX vs AMD Ryzen 5 4500U

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We compared two laptop CPUs: AMD Ryzen 5 7645HX with 6 cores 4.0GHz and AMD Ryzen 5 4500U with 6 cores 2.3GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

AMD Ryzen 5 7645HX's Advantages

Released 3 years late

Larger memory bandwidth (83.2GB/s vs 68.27GB/s)

Newer PCIe version (5.0 vs 3.0)

Higher base frequency (4.0GHz vs 2.3GHz)

Larger L3 cache size (32MB vs 8MB)

More modern manufacturing process (5nm vs 7nm)

AMD Ryzen 5 4500U's Advantages

Higher specification of memory (LPDDR4-4266 vs DDR5-5200)

Lower TDP (10W vs 45W)

Score

Benchmark

Cinebench R23 Single Core

AMD Ryzen 5 7645HX +58%

1808

AMD Ryzen 5 4500U

1143

Cinebench R23 Multi Core

AMD Ryzen 5 7645HX +134%

13836

AMD Ryzen 5 4500U

5889

Geekbench 6 Single Core

AMD Ryzen 5 7645HX +187%

2720

AMD Ryzen 5 4500U

947

Geekbench 6 Multi Core

AMD Ryzen 5 7645HX +248%

11906

AMD Ryzen 5 4500U

3421

Geekbench 5 Single Core

AMD Ryzen 5 7645HX +71%

1895

AMD Ryzen 5 4500U

1104

Geekbench 5 Multi Core

AMD Ryzen 5 7645HX +148%

11141

AMD Ryzen 5 4500U

4483

AMD Ryzen 5 7645HX

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AMD Ryzen 5 4500U

General Parameters

Jan 2023

Release Date

Jan 2020

AMD

Manufacturer

AMD

Laptop

Type

Laptop

x86-64

Instruction Set

x86-64

Zen 4 (Dragon Range)

Core Architecture

Zen 2

FL1

Socket

FP6

Radeon 610M

Integrated Graphics

Radeon RX Vega 6

Package

5 nm

Manufacturing Process

7 nm

FL1

Socket

FP6

45-75 W

Power Consumption

10-25 W

100°C

Peak Operating Temperature

105 °C

CPU Performance

6

Performance Cores

6

12

Performance Core Threads

6

4.0 GHz

Performance Core Base Frequency

2.3 GHz

5 GHz

Performance Core Turbo Frequency

4 GHz

6

Total Core Count

6

12

Total Thread Count

6

100MHz

Bus Frequency

100MHz

40x

Multiplier

23x

64K per core

L1 Cache

32K per core

1MB per core

L2 Cache

512K per core

32MB shared

L3 Cache

8MB shared

Yes

Unlocked Multiplier

No

Memory Parameters

DDR5-5200

Memory Types

DDR4-3200, LPDDR4-4266

64GB

Max Memory Size

64GB

2

Max Memory Channels

2

83.2 GB/s

Max Memory Bandwidth

68.27 GB/s

No

ECC Memory Support

Yes

Graphics Card Parameters

True

Integrated Graphics

True

1500 MHz

GPU Base Frequency

-

2200 MHz

GPU Max Dynamic Frequency

1500 MHz

128

Shader Units

384

8

Texture Units

24

4

Raster Operation Units

8

2

Execution Units

-

15 W

Power Consumption

15 W

0.49 TFLOPS

Graphics Performance

-

Miscellaneous

AMD Ryzen 5 7645HX

Official Website

AMD Ryzen 5 4500U

5.0

PCIe Version

3.0

28

PCIe Lanes

16

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