AMD EPYC 7642 vs AMD EPYC 9455

VS

AMD EPYC 7642

AMD EPYC 9455

We compared two server CPUs: AMD EPYC 7642 with 48 cores 2.4GHz and AMD EPYC 9455 with 48 cores 3.15GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

AMD EPYC 7642 's Advantages

Larger L3 cache size (256MB vs 192MB)

Lower TDP (225W vs 300W)

AMD EPYC 9455 's Advantages

Released 5 years and 2 months late

Higher specification of memory (6000 vs 3200)

Newer PCIe version (5 vs 4)

Higher base frequency (3.15GHz vs 2.4GHz)

More modern manufacturing process (4nm vs 7nm)

Score

AMD EPYC 7642

VS

AMD EPYC 9455

General Parameters

Aug 2019

Release Date

Oct 2024

AMD

Manufacturer

AMD

Server

Type

Server

Rome

Core Architecture

Turin

AMD Socket SP3

Socket

AMD Socket SP5

N/A

Integrated Graphics

N/A

EPYC (Zen 2 (Rome))

Generation

EPYC(Zen 5 (Turin))

Package

3.8 billions

Transistor Count

49.89 billions

7 nm

Manufacturing Process

4 nm

225 W

Power Consumption

300 W

TSMC

Foundry

TSMC

74 mm²

Die Size

6x70.6 mm²

-

I/O Process Size

6 nm

-

I/O Die Size

mm²

CPU Performance

-

Performance Cores

48

-

Performance Core Threads

96

2.4 GHz

Performance Core Base Frequency

3.15 GHz

3.4 GHz

Performance Core Turbo Frequency

4.4 GHz

48

Total Core Count

48

96

Total Thread Count

96

100 MHz

Bus Frequency

100 MHz

24.0

Multiplier

31.5

96 K per core

L1 Cache

80 KB per core

512 K per core

L2 Cache

1 MB per core

256 MB shared

L3 Cache

192 MB shared

No

Unlocked Multiplier

No

2

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 9455

4

PCIe Version

5

-

PCIe Lanes

128

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