AMD EPYC 7643 vs Xeon E7520

VS

AMD EPYC 7643

Intel Xeon E7520

We compared two server CPUs: AMD EPYC 7643 with 48 cores 2.3GHz and Xeon E7520 with 4 cores 1.866GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

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 1.866GHz)

Larger L3 cache size (256MB vs 18MB)

More modern manufacturing process (7nm vs 45nm)

Xeon E7520 's Advantages

Lower TDP (95W vs 225W)

Score

AMD EPYC 7643

VS

Xeon E7520

General Parameters

Mar 2021

Release Date

Mar 2010

AMD

Manufacturer

Intel

Server

Type

Server

Milan

Core Architecture

Nehalem-EX

AMD Socket SP3

Socket

Intel Socket 1567

N/A

Integrated Graphics

N/A

EPYC (Zen 3 (Milan))

Generation

Xeon(Beckton)

Package

33.2 billions

Transistor Count

2.3 billions

7 nm

Manufacturing Process

45 nm

225 W

Power Consumption

95 W

TSMC

Foundry

Intel

8x81 mm²

Die Size

684 mm²

12 nm

I/O Process Size

-

416 mm²

I/O Die Size

-

CPU Performance

2.3 GHz

Performance Core Base Frequency

1.866 GHz

3.6 GHz

Performance Core Turbo Frequency

0

48

Total Core Count

4

96

Total Thread Count

8

100 MHz

Bus Frequency

133 MHz

23.0

Multiplier

14.0

64 KB per core

L1 Cache

64 KB per core

512 KB per core

L2 Cache

256 KB per core

256 MB shared

L3 Cache

18 MB shared

No

Unlocked Multiplier

No

6

Cores per CCD

-

2

SMP

8

Memory Parameters

DDR4-3200

Memory Types

DDR3-1333

8

Max Memory Channels

4

Yes

ECC Memory Support

Yes

Miscellaneous

4

PCIe Version

2

128

PCIe Lanes

-

Related CPU Comparisons

1

AMD EPYC 7643 vs Xeon E7 2870

2

AMD EPYC 7643 vs Intel Xeon E5 2430 v2

3

AMD EPYC 7643 vs AMD EPYC 7443P

4

AMD EPYC 7643 vs Intel Xeon E5 2650L

5

AMD EPYC 7643 vs AMD EPYC 7773X

6

AMD EPYC 7643 vs Intel Xeon E5 2687W v2

7

AMD EPYC 7643 vs AMD EPYC 9754

8

AMD EPYC 7643 vs Intel Xeon Gold 6534

9

AMD EPYC 7643 vs Intel Xeon E3 1565L v5

10

AMD EPYC 7643 vs AMD EPYC 7453

Related News

1

NVIDIA Allegedly Equips RTX 5080 with 30Gbps Memory Speed, Other Models to Feature 28Gbps

2

Intel Reports High Return Rates for Devices Featuring Snapdragon X Series; Qualcomm Counters with 'Industry Standard' Claim

3

Intel Confirms Panther Lake Adopts 18A Process, ES0 Samples Already Sent to Customers

4

Complete Lineup of Core Ultra 200HX/H/U and Core 200H/U Revealed: 31 Models to Dazzle the Eyes

5

Amechi Unveils V1 Mini PC: Only 0.33L Volume with 150W Power Consumption

6

iPhone 17 Series Set for Major Design Overhaul: Camera Module Transformed into Sleek Strip

7

The Thinnest iPhone Ever! iPhone 17 Air Reportedly Enters Foxconn's NPI Stage

8

Apple Allegedly Cancels M4 Extreme, Originally Planned for Mac Pro with 64-Core CPU and 160-Core GPU

9

Cyberpunk 2077 Update 2.2: Intel Arrow Lake Gaming Performance Soars by 33%!

10

Intel Finally Achieves Frame Generation! 'F1 24' Becomes the First XeSS 2 Game