AMD EPYC 7643 vs Intel Xeon Phi 7120A

VS

AMD EPYC 7643

Intel Xeon Phi 7120A

We compared two server CPUs: AMD EPYC 7643 with 48 cores 2.3GHz and Intel Xeon Phi 7120A with 61 cores 1.238GHz . 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 6 years and 11 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

AMD EPYC 7643

VS

Intel Xeon Phi 7120A

General Parameters

Mar 2021

Release Date

Apr 2014

AMD

Manufacturer

PCIe

Server

Type

Server

Milan

Core Architecture

Knights Corner

AMD Socket SP3

Socket

PCIe x16

N/A

Integrated Graphics

N/A

EPYC (Zen 3 (Milan))

Generation

Xeon Phi (Knights Corner)

Package

33.2 billions

Transistor Count

5 billions

7 nm

Manufacturing Process

22 nm

225 W

Power Consumption

300 W

TSMC

Foundry

Intel

8x81 mm²

Die Size

350 mm²

12 nm

I/O Process Size

-

416 mm²

I/O Die Size

-

CPU Performance

2.3 GHz

Performance Core Base Frequency

1.238 GHz

3.6 GHz

Performance Core Turbo Frequency

1.333 GHz

48

Total Core Count

61

96

Total Thread Count

244

100 MHz

Bus Frequency

100 MHz

23.0

Multiplier

12.0

64 KB per core

L1 Cache

32 K per core

512 KB per core

L2 Cache

512 K per core

256 MB shared

L3 Cache

-

No

Unlocked Multiplier

No

6

Cores per CCD

-

2

SMP

1

Memory Parameters

DDR4-3200

Memory Types

DDR3,DDR4

8

Max Memory Channels

Yes

ECC Memory Support

Yes

Miscellaneous

4

PCIe Version

-

128

PCIe Lanes

-

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