AMD EPYC 7742 vs Opteron A1120

VS

AMD EPYC 7742

AMD Opteron A1120

We compared two server CPUs: AMD EPYC 7742 with 64 cores 2.25GHz and Opteron A1120 with 4 cores 1.7GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

AMD EPYC 7742 's Advantages

Released 3 years and 7 months late

Higher specification of memory (3200 vs 1866)

Newer PCIe version (4 vs 3)

Higher base frequency (2.25GHz vs 1.7GHz)

Larger L3 cache size (256MB vs 8MB)

More modern manufacturing process (7nm vs 28nm)

Opteron A1120 's Advantages

Lower TDP (25W vs 225W)

Score

AMD EPYC 7742

VS

Opteron A1120

General Parameters

Aug 2019

Release Date

Jan 2016

AMD

Manufacturer

AMD

Server

Type

Server

Rome

Core Architecture

Seattle

AMD Socket SP3

Socket

AMD Socket SP1

N/A

Integrated Graphics

N/A

EPYC (Zen 2 (Rome))

Generation

Opteron (Seattle)

Package

3.8 billions

Transistor Count

-

7 nm

Manufacturing Process

28 nm

225 W

Power Consumption

25 W

TSMC

Foundry

GlobalFoundries

74 mm²

Die Size

182 mm²

CPU Performance

2.25 GHz

Performance Core Base Frequency

1.7 GHz

3.4 GHz

Performance Core Turbo Frequency

0

64

Total Core Count

4

128

Total Thread Count

4

100 MHz

Bus Frequency

100 MHz

22.5

Multiplier

17.0

96 K per core

L1 Cache

80 K per core

512 K per core

L2 Cache

2 MB shared

256 MB shared

L3 Cache

8 MB shared

No

Unlocked Multiplier

No

2

SMP

1

Memory Parameters

DDR4-3200

Memory Types

DDR3,DDR4-1866

8

Max Memory Channels

2

Yes

ECC Memory Support

Yes

Miscellaneous

4

PCIe Version

3

-

PCIe Lanes

8

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