AMD EPYC Embedded 3251 vs AMD EPYC 7643

VS

We compared two server CPUs: AMD EPYC Embedded 3251 with 8 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 Embedded 3251 's Advantages

Higher base frequency (2.5GHz vs 2.3GHz)

Lower TDP (55W vs 225W)

AMD EPYC 7643 's Advantages

Released 3 years and 1 months late

Higher specification of memory (DDR4-3200 vs DDR4-2666)

Newer PCIe version (4 vs 3)

Larger L3 cache size (256MB vs 16MB)

More modern manufacturing process (7nm vs 14nm)

Score

Benchmark

Geekbench 6 Single Core

AMD EPYC Embedded 3251

870

AMD EPYC 7643 +94%

1696

Geekbench 6 Multi Core

AMD EPYC Embedded 3251

4939

AMD EPYC 7643 +101%

9939

AMD EPYC Embedded 3251

VS

AMD EPYC 7643

General Parameters

Feb 2018

Release Date

Mar 2021

AMD

Manufacturer

AMD

Server

Type

Server

Zen

Core Architecture

Milan

AMD BGA SP4r2

Socket

AMD Socket SP3

N/A

Integrated Graphics

N/A

EPYC Embedded (Zen (Snowy Owl))

Generation

EPYC (Zen 3 (Milan))

Package

4.8 billions

Transistor Count

33.2 billions

14 nm

Manufacturing Process

7 nm

AMD BGA SP4r2

Socket

AMD Socket SP3

55 W

Power Consumption

225 W

GlobalFoundries

Foundry

TSMC

213 mm²

Die Size

8x81 mm²

-

I/O Process Size

12 nm

-

I/O Die Size

416 mm²

SP4r2

Package

FCLGA-4094

CPU Performance

2.5 GHz

Performance Core Base Frequency

2.3 GHz

3.1 GHz

Performance Core Turbo Frequency

3.6 GHz

8

Total Core Count

48

16

Total Thread Count

96

100 MHz

Bus Frequency

100 MHz

25.0

Multiplier

23.0

96 K per core

L1 Cache

64 KB per core

512 K per core

L2 Cache

512 KB per core

16 MB shared

L3 Cache

256 MB shared

No

Unlocked Multiplier

No

-

Cores per CCD

6

1

SMP

2

Memory Parameters

DDR4-2666

Memory Types

DDR4-3200

2

Max Memory Channels

8

Yes

ECC Memory Support

Yes

Miscellaneous

3

PCIe Version

4

32

PCIe Lanes

128

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