AMD EPYC 9684X vs AMD EPYC 9645

VS

AMD EPYC 9684X

AMD EPYC 9645

We compared two server CPUs: AMD EPYC 9684X with 96 cores 2.55GHz and AMD EPYC 9645 with 96 cores 2.3GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

AMD EPYC 9684X 's Advantages

Higher base frequency (2.55GHz vs 2.3GHz)

Larger L3 cache size (1152MB vs 256MB)

AMD EPYC 9645 's Advantages

Released 1 years and 4 months late

Higher specification of memory (6000 vs 4800)

Larger memory bandwidth (576GB/s vs 460.8GB/s)

More modern manufacturing process (3nm vs 5nm)

Lower TDP (320W vs 400W)

Score

AMD EPYC 9684X

VS

AMD EPYC 9645

General Parameters

Jun 2023

Release Date

Oct 2024

AMD

Manufacturer

AMD

Server

Type

Server

Genoa-X

Core Architecture

Turin

AMD Socket SP5

Socket

AMD Socket SP5

N/A

Integrated Graphics

N/A

EPYC (Zen 4 (Genoa))

Generation

EPYC(Zen 5c (Turin))

Package

135.24 billions

Transistor Count

5 nm

Manufacturing Process

3 nm

400 W

Power Consumption

320 W

TSMC

Foundry

TSMC

12x72 mm²

Die Size

mm²

6 nm

I/O Process Size

6 nm

397 mm²

I/O Die Size

mm²

CPU Performance

-

Performance Cores

96

-

Performance Core Threads

192

2.55 GHz

Performance Core Base Frequency

2.3 GHz

3.7 GHz

Performance Core Turbo Frequency

3.7 GHz

96

Total Core Count

96

192

Total Thread Count

192

100 MHz

Bus Frequency

100 MHz

25.5

Multiplier

23.0

64 K per core

L1 Cache

80 KB per core

1 MB per core

L2 Cache

1 MB per core

1152 MB shared

L3 Cache

256 MB shared

No

Unlocked Multiplier

No

2

SMP

2

Memory Parameters

DDR5-4800

Memory Types

DDR5-6000

-

Max Memory Size

6 TB

12

Max Memory Channels

12

460.8 GB/s

Max Memory Bandwidth

576 GB/s

Yes

ECC Memory Support

Yes

Miscellaneous

AMD EPYC 9684X

Official Website

AMD EPYC 9645

5

PCIe Version

5

128

PCIe Lanes

128

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