AMD Ryzen 9 4900H vs AMD Ryzen 5 8645HS

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We compared two laptop CPUs: AMD Ryzen 9 4900H with 8 cores 3.3GHz and AMD Ryzen 5 8645HS with 6 cores 4.3GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

AMD Ryzen 5 8645HS 's Advantages

Released 3 years and 9 months late

Higher specification of memory (LPDDR5x-7500 vs LPDDR4X-4266)

Larger memory bandwidth (89.6GB/s vs 68.27GB/s)

Newer PCIe version (4.0 vs 3.0)

Higher base frequency (4.3GHz vs 3.3GHz)

Larger L3 cache size (16MB vs 8MB)

Score

Benchmark

Cinebench R23 Single Core

AMD Ryzen 9 4900H

1277

AMD Ryzen 5 8645HS +35%

1731

Cinebench R23 Multi Core

AMD Ryzen 9 4900H

11308

AMD Ryzen 5 8645HS +14%

13002

Geekbench 6 Single Core

AMD Ryzen 9 4900H

1678

AMD Ryzen 5 8645HS +32%

2229

Geekbench 6 Multi Core

AMD Ryzen 9 4900H

6103

AMD Ryzen 5 8645HS +62%

9891

AMD Ryzen 9 4900H

VS

AMD Ryzen 5 8645HS

General Parameters

Mar 2020

Release Date

Dec 2023

AMD

Manufacturer

Amd

Laptop

Type

Laptop

x86-64

Instruction Set

x86-64

Zen 2

Core Architecture

Hawk Point

FP6

Socket

FP8

Radeon Vega 8

Integrated Graphics

Radeon 760M

-

Generation

Ryzen 5 (Zen 4 (Hawk Point))

Package

-

Transistor Count

25 billions

7 nm

Manufacturing Process

4 nm

FP6

Socket

FP8

35-54 W

Power Consumption

35-54 W

105 °C

Peak Operating Temperature

100°C

-

Foundry

TSMC

-

Die Size

178 mm²

-

Package

FP8, FP7, FP7r2

CPU Performance

8

Performance Cores

6

16

Performance Core Threads

12

3.3 GHz

Performance Core Base Frequency

4.3 GHz

4.4 GHz

Performance Core Turbo Frequency

5 GHz

8

Total Core Count

6

16

Total Thread Count

12

100 MHz

Bus Frequency

100 MHz

33x

Multiplier

43x

-

L1 Cache

64 K per core

512 K per core

L2 Cache

1 MB per core

8 MB shared

L3 Cache

16 MB shared

No

Unlocked Multiplier

No

-

SMP

1

Memory Parameters

DDR4-3200, LPDDR4X-4266

Memory Types

DDR5-5600, LPDDR5x-7500

64 GB

Max Memory Size

256 GB

4

Max Memory Channels

2

68.27 GB/s

Max Memory Bandwidth

89.6 GB/s

Yes

ECC Memory Support

No

Graphics Card Parameters

true

Integrated Graphics

true

-

GPU Base Frequency

1500 MHz

1750 MHz

GPU Max Dynamic Frequency

2600 MHz

512

Shader Units

384

32

Texture Units

24

8

Raster Operation Units

16

-

Execution Units

6

15 W

Power Consumption

15 W

-

Graphics Performance

4.06 TFLOPS

Miscellaneous

AMD Ryzen 9 4900H

Official Website

AMD Ryzen 5 8645HS

3.0

PCIe Version

4.0

16

PCIe Lanes

20

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