AMD EPYC 7643P vs AMD EPYC 9645

VS

AMD EPYC 7643P

AMD EPYC 9645

We compared two server CPUs: AMD EPYC 7643P with 48 cores 2.3GHz 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 7643P 's Advantages

Lower TDP (225W vs 320W)

AMD EPYC 9645 's Advantages

Released 1 years and 1 months late

Higher specification of memory (6000 vs 3200)

Newer PCIe version (5 vs 4)

More modern manufacturing process (3nm vs 7nm)

Score

AMD EPYC 7643P

VS

AMD EPYC 9645

General Parameters

Sep 2023

Release Date

Oct 2024

AMD

Manufacturer

AMD

Server

Type

Server

Milan

Core Architecture

Turin

AMD Socket SP3

Socket

AMD Socket SP5

N/A

Integrated Graphics

N/A

EPYC (Zen 3 (Milan))

Generation

EPYC(Zen 5c (Turin))

Package

33.2 billions

Transistor Count

7 nm

Manufacturing Process

3 nm

225 W

Power Consumption

320 W

TSMC

Foundry

TSMC

8x81 mm²

Die Size

mm²

12 nm

I/O Process Size

6 nm

416 mm²

I/O Die Size

mm²

CPU Performance

-

Performance Cores

96

-

Performance Core Threads

192

2.3 GHz

Performance Core Base Frequency

2.3 GHz

3.6 GHz

Performance Core Turbo Frequency

3.7 GHz

48

Total Core Count

96

Total Thread Count

192

100 MHz

Bus Frequency

100 MHz

23.0

Multiplier

23.0

64 KB per core

L1 Cache

80 KB per core

512 KB per core

L2 Cache

1 MB per core

256 MB shared

L3 Cache

256 MB shared

No

Unlocked Multiplier

No

8

Cores per CCD

-

1

SMP

2

Memory Parameters

DDR4-3200

Memory Types

DDR5-6000

-

Max Memory Size

6 TB

8

Max Memory Channels

12

-

Max Memory Bandwidth

576 GB/s

Yes

ECC Memory Support

Yes

Miscellaneous

-

Official Website

AMD EPYC 9645

4

PCIe Version

5

128

PCIe Lanes

128

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