AMD Ryzen 9 7945HX3D vs AMD Ryzen 5 3450U

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We compared two laptop CPUs: AMD Ryzen 9 7945HX3D with 16 cores 2.3GHz and AMD Ryzen 5 3450U with 4 cores 2.1GHz . 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

Released 3 years and 6 months late

Higher specification of memory (DDR5-5200 vs DDR4-2400)

Larger memory bandwidth (83.2GB/s vs 38.4GB/s)

Newer PCIe version (5 vs 3.0)

Higher base frequency (2.3GHz vs 2.1GHz)

Larger L3 cache size (128MB vs 4MB)

More modern manufacturing process (5nm vs 12nm)

AMD Ryzen 5 3450U 's Advantages

Better graphics card performance

Lower TDP (12W vs 55W)

Score

Benchmark

Cinebench R23 Single Core

AMD Ryzen 9 7945HX3D +120%

1958

AMD Ryzen 5 3450U

886

Cinebench R23 Multi Core

AMD Ryzen 9 7945HX3D +960%

33745

AMD Ryzen 5 3450U

3181

Geekbench 6 Single Core

AMD Ryzen 9 7945HX3D +189%

2783

AMD Ryzen 5 3450U

961

Geekbench 6 Multi Core

AMD Ryzen 9 7945HX3D +569%

16080

AMD Ryzen 5 3450U

2403

Blender

AMD Ryzen 9 7945HX3D +1369%

485

AMD Ryzen 5 3450U

33

Geekbench 5 Single Core

AMD Ryzen 9 7945HX3D +178%

2138

AMD Ryzen 5 3450U

768

Geekbench 5 Multi Core

AMD Ryzen 9 7945HX3D +667%

19153

AMD Ryzen 5 3450U

2495

AMD Ryzen 9 7945HX3D

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AMD Ryzen 5 3450U

General Parameters

Jul 2023

Release Date

Jan 2020

AMD

Manufacturer

AMD

Laptop

Type

Laptop

-

Instruction Set

x86-64

Dragon Range

Core Architecture

Zen+

AMD Socket FL1

Socket

FP5

Radeon 610M

Integrated Graphics

Radeon Vega 8

Ryzen 9 (Zen 4 (Dragon Range))

Generation

-

Package

17.84 billions

Transistor Count

-

5 nm

Manufacturing Process

12 nm

AMD Socket FL1

Socket

FP5

55 W

Power Consumption

12-35 W

89 °C

Peak Operating Temperature

105 °C

TSMC

Foundry

-

2x71 mm²

Die Size

-

6 nm

I/O Process Size

-

122 mm²

I/O Die Size

-

µFC-BGAFL1

Package

-

CPU Performance

-

Performance Cores

4

-

Performance Core Threads

8

2.3 GHz

Performance Core Base Frequency

2.1 GHz

5.4 GHz

Performance Core Turbo Frequency

3.5 GHz

16

Total Core Count

4

32

Total Thread Count

8

100 MHz

Bus Frequency

100 MHz

23.0

Multiplier

21x

64 KB per core

L1 Cache

64 K per core

1 MB per core

L2 Cache

512 K per core

128 MB shared

L3 Cache

4 MB shared

Yes

Unlocked Multiplier

No

1

SMP

-

Memory Parameters

DDR5-5200

Memory Types

DDR4-2400

64 GB

Max Memory Size

32 GB

2

Max Memory Channels

2

83.2 GB/s

Max Memory Bandwidth

38.4 GB/s

Yes

ECC Memory Support

-

Graphics Card Parameters

true

Integrated Graphics

true

-

GPU Base Frequency

300 MHz

2200 MHz

GPU Max Dynamic Frequency

2400 MHz

-

Shader Units

512

-

Texture Units

32

-

Raster Operation Units

8

2

Execution Units

8

-

Power Consumption

65 W

-

Max Resolution

3840x2160 - 60 Hz

0.49 TFLOPS

Graphics Performance

1.13 TFLOPS

Miscellaneous

AMD Ryzen 9 7945HX3D

Official Website

AMD Ryzen 5 3450U

5

PCIe Version

3.0

28

PCIe Lanes

12

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