Intel Xeon Phi 7120X vs AMD EPYC 7643

VS

Intel Xeon Phi 7120X

AMD EPYC 7643

We compared two server CPUs: Intel Xeon Phi 7120X with 61 cores 1.238GHz 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 7643 's Advantages

Released 7 years and 9 months late

Higher specification of memory (3200 vs 4)

Higher base frequency (2.3GHz vs 1.238GHz)

More modern manufacturing process (7nm vs 22nm)

Lower TDP (225W vs 300W)

Score

Intel Xeon Phi 7120X

VS

AMD EPYC 7643

General Parameters

Jun 2013

Release Date

Mar 2021

PCIe

Manufacturer

AMD

Server

Type

Server

Knights Corner

Core Architecture

Milan

PCIe x16

Socket

AMD Socket SP3

N/A

Integrated Graphics

N/A

Xeon Phi (Knights Corner)

Generation

EPYC (Zen 3 (Milan))

Package

5 billions

Transistor Count

33.2 billions

22 nm

Manufacturing Process

7 nm

300 W

Power Consumption

225 W

Intel

Foundry

TSMC

350 mm²

Die Size

8x81 mm²

-

I/O Process Size

12 nm

-

I/O Die Size

416 mm²

CPU Performance

1.238 GHz

Performance Core Base Frequency

2.3 GHz

1.333 GHz

Performance Core Turbo Frequency

3.6 GHz

61

Total Core Count

48

244

Total Thread Count

96

100 MHz

Bus Frequency

100 MHz

12.0

Multiplier

23.0

32 K per core

L1 Cache

64 KB per core

512 K per core

L2 Cache

512 KB per core

-

L3 Cache

256 MB shared

No

Unlocked Multiplier

No

-

Cores per CCD

6

1

SMP

2

Memory Parameters

DDR3,DDR4

Memory Types

DDR4-3200

Max Memory Channels

8

Yes

ECC Memory Support

Yes

Miscellaneous

-

PCIe Version

4

-

PCIe Lanes

128

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