AMD EPYC 7251 vs AMD Ryzen 9 PRO 7945

VS

AMD EPYC 7251

AMD Ryzen 9 PRO 7945

We compared two server CPUs: AMD EPYC 7251 with 8 cores 2.1GHz and AMD Ryzen 9 PRO 7945 with 12 cores 3.7GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

AMD Ryzen 9 PRO 7945 's Advantages

Released 6 years late

Higher specification of memory (5200 vs 2400)

Newer PCIe version (5 vs 3)

Higher base frequency (3.7GHz vs 2.1GHz)

Larger L3 cache size (64MB vs 32MB)

More modern manufacturing process (5nm vs 14nm)

Lower TDP (65W vs 120W)

Score

Benchmark

Geekbench 6 Single Core

AMD EPYC 7251

781

AMD Ryzen 9 PRO 7945 +270%

2892

Geekbench 6 Multi Core

AMD EPYC 7251

3651

AMD Ryzen 9 PRO 7945 +297%

14516

AMD EPYC 7251

VS

AMD Ryzen 9 PRO 7945

General Parameters

Jun 2017

Release Date

Jun 2023

AMD

Manufacturer

AMD

Server

Type

Server

Naples

Core Architecture

Raphael

AMD Socket SP3

Socket

AMD Socket AM5

N/A

Integrated Graphics

Radeon Graphics

EPYC (Zen (Naples))

Generation

Ryzen 9 (Zen 4 (Raphael))

Package

4.8 billions

Transistor Count

13.14 billions

14 nm

Manufacturing Process

5 nm

120 W

Power Consumption

65 W

81 °C

Peak Operating Temperature

47 °C

GlobalFoundries

Foundry

TSMC

213 mm²

Die Size

2x71 mm²

-

I/O Process Size

6 nm

-

I/O Die Size

122 mm²

CPU Performance

2.1 GHz

Performance Core Base Frequency

3.7 GHz

2.9 GHz

Performance Core Turbo Frequency

5.4 GHz

8

Total Core Count

12

16

Total Thread Count

24

100 MHz

Bus Frequency

100 MHz

21.0

Multiplier

37.0

96 K per core

L1 Cache

64 KB per core

512 K per core

L2 Cache

1 MB per core

32 MB shared

L3 Cache

64 MB shared

Yes

Unlocked Multiplier

No

2

SMP

1

Memory Parameters

DDR4-2400

Memory Types

DDR5-5200

8

Max Memory Channels

Yes

ECC Memory Support

Yes

Miscellaneous

3

PCIe Version

5

-

PCIe Lanes

24

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