AMD EPYC 8434P vs AMD EPYC 7643

VS

AMD EPYC 8434P

AMD EPYC 7643

We compared two server CPUs: AMD EPYC 8434P with 48 cores 2.5GHz 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 8434P 's Advantages

Released 2 years and 6 months late

Higher specification of memory (4800 vs 3200)

Newer PCIe version (5 vs 4)

Higher base frequency (2.5GHz vs 2.3GHz)

More modern manufacturing process (5nm vs 7nm)

Lower TDP (200W vs 225W)

AMD EPYC 7643 's Advantages

Larger L3 cache size (256MB vs 128MB)

Score

AMD EPYC 8434P

VS

AMD EPYC 7643

General Parameters

Sep 2023

Release Date

Mar 2021

AMD

Manufacturer

AMD

Server

Type

Server

Siena

Core Architecture

Milan

AMD Socket SP6

Socket

AMD Socket SP3

N/A

Integrated Graphics

N/A

EPYC (Zen 4c (Siena))

Generation

EPYC (Zen 3 (Milan))

Package

35.5 billions

Transistor Count

33.2 billions

5 nm

Manufacturing Process

7 nm

200 W

Power Consumption

225 W

75 °C

Peak Operating Temperature

-

TSMC

Foundry

TSMC

4x73 mm²

Die Size

8x81 mm²

6 nm

I/O Process Size

12 nm

397 mm²

I/O Die Size

416 mm²

CPU Performance

2.5 GHz

Performance Core Base Frequency

2.3 GHz

3.1 GHz

Performance Core Turbo Frequency

3.6 GHz

48

Total Core Count

48

96

Total Thread Count

96

100 MHz

Bus Frequency

100 MHz

25.0

Multiplier

23.0

64 K per core

L1 Cache

64 KB per core

1 MB per core

L2 Cache

512 KB per core

128 MB shared

L3 Cache

256 MB shared

No

Unlocked Multiplier

No

-

Cores per CCD

6

1

SMP

2

Memory Parameters

DDR5-4800

Memory Types

DDR4-3200

6

Max Memory Channels

8

Yes

ECC Memory Support

Yes

Miscellaneous

5

PCIe Version

4

96

PCIe Lanes

128

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