AMD Ryzen 7 7840U vs AMD Ryzen 9 8940H

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We compared two laptop CPUs: AMD Ryzen 7 7840U with 8 cores 3.3GHz and AMD Ryzen 9 8940H with 8 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 7840U 's Advantages

Higher specification of memory (LPDDR5x-7500 vs DDR5-5600)

Lower TDP (15W vs 35W)

AMD Ryzen 9 8940H 's Advantages

Released 8 months late

Higher base frequency (4.0GHz vs 3.3GHz)

Score

Benchmark

Geekbench 6 Single Core

AMD Ryzen 7 7840U

2401

AMD Ryzen 9 8940H +4%

2512

Geekbench 6 Multi Core

AMD Ryzen 7 7840U

10983

AMD Ryzen 9 8940H +19%

13104

AMD Ryzen 7 7840U

VS

AMD Ryzen 9 8940H

General Parameters

May 2023

Release Date

Jan 2024

AMD

Manufacturer

AMD

Laptop

Type

Laptop

x86-64

Instruction Set

x86-64

Zen 4 (Phoenix)

Core Architecture

Zen 4 (Phoenix)

FP8

Socket

FP8

Radeon 780M

Integrated Graphics

Radeon 780M

Package

25 billions

Transistor Count

25 billions

4 nm

Manufacturing Process

4 nm

FP8

Socket

FP8

15-30 W

Power Consumption

35-54 W

100°C

Peak Operating Temperature

100°C

CPU Performance

8

Performance Cores

8

16

Performance Core Threads

16

3.3 GHz

Performance Core Base Frequency

4.0 GHz

5.1 GHz

Performance Core Turbo Frequency

5.2 GHz

8

Total Core Count

8

16

Total Thread Count

16

100 MHz

Bus Frequency

100 MHz

33x

Multiplier

40x

64 K per core

L1 Cache

64 K per core

1 MB per core

L2 Cache

8 MB

16 MB shared

L3 Cache

16 MB

No

Unlocked Multiplier

No

Memory Parameters

DDR5-5600, LPDDR5x-7500

Memory Types

DDR5-5600

256 GB

Max Memory Size

256 GB

2

Max Memory Channels

2

-

Max Memory Bandwidth

89.6 GB/s

Yes

ECC Memory Support

-

Graphics Card Parameters

true

Integrated Graphics

true

1500 MHz

GPU Base Frequency

1500 MHz

2700 MHz

GPU Max Dynamic Frequency

2800 MHz

768

Shader Units

768

48

Texture Units

48

32

Raster Operation Units

32

12

Execution Units

12

15 W

Power Consumption

15 W

7680x4320 - 60 Hz

Max Resolution

7680x4320 - 60 Hz

8.12 TFLOPS

Graphics Performance

8.12 TFLOPS

Miscellaneous

AMD Ryzen 7 7840U

Official Website

AMD Ryzen 9 8940H

4.0

PCIe Version

4.0

20

PCIe Lanes

20

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