AMD Ryzen 9 7945HX3D vs AMD Ryzen 7 PRO 7840U

VS

AMD Ryzen 9 7945HX3D

AMD Ryzen 7 PRO 7840U

We compared two laptop CPUs: AMD Ryzen 9 7945HX3D with 16 cores 2.3GHz and AMD Ryzen 7 PRO 7840U with 8 cores 3.3GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

AMD Ryzen 9 7945HX3D 's Advantages

Newer PCIe version (5 vs 4.0)

Larger L3 cache size (128MB vs 16MB)

AMD Ryzen 7 PRO 7840U 's Advantages

Better graphics card performance

Higher specification of memory (7500 vs 5200)

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

Higher base frequency (3.3GHz vs 2.3GHz)

More modern manufacturing process (4nm vs 5nm)

Lower TDP (30W vs 55W)

Score

Benchmark

Cinebench R23 Single Core

AMD Ryzen 9 7945HX3D +10%

1940

AMD Ryzen 7 PRO 7840U

1755

Geekbench 6 Single Core

AMD Ryzen 9 7945HX3D +16%

2783

AMD Ryzen 7 PRO 7840U

2394

Geekbench 6 Multi Core

AMD Ryzen 9 7945HX3D +45%

16080

AMD Ryzen 7 PRO 7840U

11027

Blender

AMD Ryzen 9 7945HX3D +127%

475

AMD Ryzen 7 PRO 7840U

209

AMD Ryzen 9 7945HX3D

VS

AMD Ryzen 7 PRO 7840U

General Parameters

Jul 2023

Release Date

Jun 2023

AMD

Manufacturer

AMD

Laptop

Type

Laptop

-

Instruction Set

x86-64

Dragon Range

Core Architecture

Zen 4 (Phoenix)

AMD Socket FL1

Socket

FP8

Radeon 610M

Integrated Graphics

Radeon 780M

Ryzen 9 (Zen 4 (Dragon Range))

Generation

-

Package

17.84 billions

Transistor Count

25 billions

5 nm

Manufacturing Process

4 nm

55 W

Power Consumption

15-30 W

89 °C

Peak Operating Temperature

100 °C

TSMC

Foundry

-

2x71 mm²

Die Size

-

6 nm

I/O Process Size

-

122 mm²

I/O Die Size

-

CPU Performance

-

Performance Cores

8

-

Performance Core Threads

16

2.3 GHz

Performance Core Base Frequency

3.3 GHz

5.4 GHz

Performance Core Turbo Frequency

5.1 GHz

16

Total Core Count

8

32

Total Thread Count

16

100 MHz

Bus Frequency

100 MHz

23.0

Multiplier

33

64 KB per core

L1 Cache

64 K per core

1 MB per core

L2 Cache

8 MB

128 MB shared

L3 Cache

16 MB

Yes

Unlocked Multiplier

No

1

SMP

-

Memory Parameters

DDR5-5200

Memory Types

DDR5-5600, LPDDR5x-7500

64 GB

Max Memory Size

256 GB

2

Max Memory Channels

2

83.2 GB/s

Max Memory Bandwidth

89.6 GB/s

Yes

ECC Memory Support

No

Graphics Card Parameters

true

Integrated Graphics

true

-

GPU Base Frequency

800 MHz

2200 MHz

GPU Max Dynamic Frequency

2700 MHz

-

Shader Units

768

-

Texture Units

48

-

Raster Operation Units

32

2

Execution Units

12

-

Power Consumption

15 W

-

Max Resolution

7680x4320 - 60 Hz

0.49 TFLOPS

Graphics Performance

4.15 TFLOPS

AI Accelerator

-

NPU

AMD Ryzen™ AI

-

Theoretical performance

10 TOPS

Miscellaneous

AMD Ryzen 9 7945HX3D

Official Website

AMD Ryzen 7 PRO 7840U

5

PCIe Version

4.0

28

PCIe Lanes

20

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