AMD Ryzen 7 7840HS vs AMD Ryzen 5 7645HX

VS

We compared two laptop CPUs: AMD Ryzen 7 7840HS with 8 cores 3.8GHz and AMD Ryzen 5 7645HX with 6 cores 4.0GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

AMD Ryzen 7 7840HS 's Advantages

Better graphics card performance

Higher specification of memory (LPDDR5x-7500 vs DDR5-5200)

Larger memory bandwidth (89.6GB/s vs 83.2GB/s)

More modern manufacturing process (4nm vs 5nm)

Lower TDP (35W vs 45W)

AMD Ryzen 5 7645HX 's Advantages

Newer PCIe version (5.0 vs 4.0)

Higher base frequency (4.0GHz vs 3.8GHz)

Larger L3 cache size (32MB vs 16MB)

Score

Benchmark

Cinebench R23 Single Core

AMD Ryzen 7 7840HS

1801

AMD Ryzen 5 7645HX +1%

1827

Cinebench R23 Multi Core

AMD Ryzen 7 7840HS +21%

17144

AMD Ryzen 5 7645HX

14098

Geekbench 6 Single Core

AMD Ryzen 7 7840HS

2477

AMD Ryzen 5 7645HX +9%

2720

Geekbench 6 Multi Core

AMD Ryzen 7 7840HS +2%

12153

AMD Ryzen 5 7645HX

11906

Geekbench 5 Single Core

AMD Ryzen 7 7840HS +1%

1915

AMD Ryzen 5 7645HX

1895

Geekbench 5 Multi Core

AMD Ryzen 7 7840HS

11238

AMD Ryzen 5 7645HX

11141

AMD Ryzen 7 7840HS

VS

AMD Ryzen 5 7645HX

General Parameters

Jan 2023

Release Date

Jan 2023

AMD

Manufacturer

AMD

Laptop

Type

Laptop

x86-64

Instruction Set

x86-64

Zen 4 (Phoenix)

Core Architecture

Zen 4 (Dragon Range)

FP8

Socket

FL1

Radeon 780M

Integrated Graphics

Radeon 610M

Package

25 billions

Transistor Count

-

4 nm

Manufacturing Process

5 nm

FP8

Socket

FL1

35-54 W

Power Consumption

45-75 W

100°C

Peak Operating Temperature

100°C

CPU Performance

8

Performance Cores

6

16

Performance Core Threads

12

3.8 GHz

Performance Core Base Frequency

4.0 GHz

5.1 GHz

Performance Core Turbo Frequency

5 GHz

8

Total Core Count

6

16

Total Thread Count

12

100 MHz

Bus Frequency

100 MHz

38x

Multiplier

40x

64 K per core

L1 Cache

64 K per core

1 MB per core

L2 Cache

1 MB per core

16 MB shared

L3 Cache

32 MB shared

No

Unlocked Multiplier

Yes

Memory Parameters

DDR5-5600, LPDDR5x-7500

Memory Types

DDR5-5200

256 GB

Max Memory Size

64 GB

2

Max Memory Channels

2

89.6 GB/s

Max Memory Bandwidth

83.2 GB/s

-

ECC Memory Support

No

Graphics Card Parameters

true

Integrated Graphics

true

1500 MHz

GPU Base Frequency

1500 MHz

2700 MHz

GPU Max Dynamic Frequency

2200 MHz

768

Shader Units

128

48

Texture Units

8

32

Raster Operation Units

4

12

Execution Units

2

15 W

Power Consumption

15 W

7680x4320 - 60 Hz

Max Resolution

-

10 TFLOPS

Graphics Performance

0.49 TFLOPS

Miscellaneous

AMD Ryzen 7 7840HS

Official Website

AMD Ryzen 5 7645HX

4.0

PCIe Version

5.0

20

PCIe Lanes

28

Related CPU Comparisons

1

AMD Ryzen 7 7840HS vs AMD Ryzen 7 8845HS

2

AMD Ryzen 7 7840HS vs Intel Core i7 13700H

3

AMD Ryzen 7 7840HS vs AMD Ryzen 9 7940HS

4

AMD Ryzen 7 7840HS vs AMD Ryzen 7 7735HS

5

AMD Ryzen 7 7840HS vs Intel Core i5 13420H

6

AMD Ryzen 7 7840HS vs AMD Ryzen 5 5600G

7

AMD Ryzen 7 8840HS vs AMD Ryzen 7 7840HS

8

AMD Ryzen 5 7645HX vs AMD Ryzen 7 7745HX

9

AMD Ryzen 7 7840HS vs Intel Core i5 11500H

10

AMD Ryzen 7 7840HS vs AMD Ryzen Z1 Extreme