AMD EPYC 7643P vs AMD EPYC 8434P

VS

AMD EPYC 7643P

AMD EPYC 8434P

We compared two server CPUs: AMD EPYC 7643P with 48 cores 2.3GHz and AMD EPYC 8434P with 48 cores 2.5GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

AMD EPYC 7643P 's Advantages

Larger L3 cache size (256MB vs 128MB)

AMD EPYC 8434P 's Advantages

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)

Score

AMD EPYC 7643P

VS

AMD EPYC 8434P

General Parameters

Sep 2023

Release Date

Sep 2023

AMD

Manufacturer

AMD

Server

Type

Server

Milan

Core Architecture

Siena

AMD Socket SP3

Socket

AMD Socket SP6

N/A

Integrated Graphics

N/A

EPYC (Zen 3 (Milan))

Generation

EPYC (Zen 4c (Siena))

Package

33.2 billions

Transistor Count

35.5 billions

7 nm

Manufacturing Process

5 nm

225 W

Power Consumption

200 W

-

Peak Operating Temperature

75 °C

TSMC

Foundry

TSMC

8x81 mm²

Die Size

4x73 mm²

12 nm

I/O Process Size

6 nm

416 mm²

I/O Die Size

397 mm²

CPU Performance

2.3 GHz

Performance Core Base Frequency

2.5 GHz

3.6 GHz

Performance Core Turbo Frequency

3.1 GHz

48

Total Core Count

48

96

Total Thread Count

96

100 MHz

Bus Frequency

100 MHz

23.0

Multiplier

25.0

64 KB per core

L1 Cache

64 K per core

512 KB per core

L2 Cache

1 MB per core

256 MB shared

L3 Cache

128 MB shared

No

Unlocked Multiplier

No

8

Cores per CCD

-

1

SMP

1

Memory Parameters

DDR4-3200

Memory Types

DDR5-4800

8

Max Memory Channels

6

Yes

ECC Memory Support

Yes

Miscellaneous

4

PCIe Version

5

128

PCIe Lanes

96

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