AMD EPYC 9965 vs AMD EPYC 7643

VS

AMD EPYC 9965

AMD EPYC 7643

We compared two server CPUs: AMD EPYC 9965 with 192 cores 2.25GHz and AMD EPYC 7643 with 48 cores 2.3GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

AMD EPYC 9965 's Advantages

Released 3 years and 7 months late

Higher specification of memory (6000 vs 3200)

Newer PCIe version (5 vs 4)

Larger L3 cache size (384MB vs 256MB)

More modern manufacturing process (3nm vs 7nm)

AMD EPYC 7643 's Advantages

Higher base frequency (2.3GHz vs 2.25GHz)

Lower TDP (225W vs 500W)

Score

AMD EPYC 9965

VS

AMD EPYC 7643

General Parameters

Oct 2024

Release Date

Mar 2021

AMD

Manufacturer

AMD

Server

Type

Server

Turin

Core Architecture

Milan

AMD Socket SP5

Socket

AMD Socket SP3

N/A

Integrated Graphics

N/A

EPYC(Zen 5c (Turin))

Generation

EPYC (Zen 3 (Milan))

Package

Transistor Count

33.2 billions

3 nm

Manufacturing Process

7 nm

500 W

Power Consumption

225 W

TSMC

Foundry

TSMC

mm²

Die Size

8x81 mm²

6 nm

I/O Process Size

12 nm

mm²

I/O Die Size

416 mm²

CPU Performance

192

Performance Cores

-

384

Performance Core Threads

-

2.25 GHz

Performance Core Base Frequency

2.3 GHz

3.7 GHz

Performance Core Turbo Frequency

3.6 GHz

192

Total Core Count

48

384

Total Thread Count

96

100 MHz

Bus Frequency

100 MHz

22.5

Multiplier

23.0

80 KB per core

L1 Cache

64 KB per core

1 MB per core

L2 Cache

512 KB per core

384 MB shared

L3 Cache

256 MB shared

No

Unlocked Multiplier

No

-

Cores per CCD

6

2

SMP

2

Memory Parameters

DDR5-6000

Memory Types

DDR4-3200

6 TB

Max Memory Size

-

12

Max Memory Channels

8

576 GB/s

Max Memory Bandwidth

-

Yes

ECC Memory Support

Yes

Miscellaneous

AMD EPYC 9965

Official Website

-

5

PCIe Version

4

128

PCIe Lanes

128

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