Xeon E6540 vs AMD EPYC 7643

VS

Intel Xeon E6540

AMD EPYC 7643

We compared two server CPUs: Xeon E6540 with 6 cores 2GHz 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

Xeon E6540 's Advantages

Lower TDP (105W vs 225W)

AMD EPYC 7643 's Advantages

Released 11 years late

Higher specification of memory (3200 vs 1333)

Newer PCIe version (4 vs 2)

Higher base frequency (2.3GHz vs 2GHz)

Larger L3 cache size (256MB vs 18MB)

More modern manufacturing process (7nm vs 45nm)

Score

Xeon E6540

VS

AMD EPYC 7643

General Parameters

Mar 2010

Release Date

Mar 2021

Intel

Manufacturer

AMD

Server

Type

Server

Nehalem-EX

Core Architecture

Milan

Intel Socket 1567

Socket

AMD Socket SP3

N/A

Integrated Graphics

N/A

Xeon(Beckton)

Generation

EPYC (Zen 3 (Milan))

Package

2.3 billions

Transistor Count

33.2 billions

45 nm

Manufacturing Process

7 nm

105 W

Power Consumption

225 W

Intel

Foundry

TSMC

684 mm²

Die Size

8x81 mm²

-

I/O Process Size

12 nm

-

I/O Die Size

416 mm²

CPU Performance

2 GHz

Performance Core Base Frequency

2.3 GHz

2.266 GHz

Performance Core Turbo Frequency

3.6 GHz

6

Total Core Count

48

12

Total Thread Count

96

133 MHz

Bus Frequency

100 MHz

15.0

Multiplier

23.0

64 KB per core

L1 Cache

64 KB per core

256 KB per core

L2 Cache

512 KB per core

18 MB shared

L3 Cache

256 MB shared

No

Unlocked Multiplier

No

-

Cores per CCD

6

2

SMP

2

Memory Parameters

DDR3-1333

Memory Types

DDR4-3200

4

Max Memory Channels

8

Yes

ECC Memory Support

Yes

Miscellaneous

2

PCIe Version

4

-

PCIe Lanes

128

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