Ryzen 5 PRO 7645 vs AMD EPYC 7251

VS

AMD Ryzen 5 PRO 7645

AMD EPYC 7251

We compared two server CPUs: Ryzen 5 PRO 7645 with 6 cores 3.8GHz and AMD EPYC 7251 with 8 cores 2.1GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

Ryzen 5 PRO 7645 's Advantages

Released 6 years late

Higher specification of memory (5200 vs 2400)

Newer PCIe version (5 vs 3)

Higher base frequency (3.8GHz vs 2.1GHz)

More modern manufacturing process (5nm vs 14nm)

Lower TDP (65W vs 120W)

Score

Benchmark

Geekbench 6 Single Core

Ryzen 5 PRO 7645 +256%

2782

AMD EPYC 7251

781

Geekbench 6 Multi Core

Ryzen 5 PRO 7645 +239%

12396

AMD EPYC 7251

3651

Ryzen 5 PRO 7645

VS

AMD EPYC 7251

General Parameters

Jun 2023

Release Date

Jun 2017

AMD

Manufacturer

AMD

Server

Type

Server

Raphael

Core Architecture

Naples

AMD Socket AM5

Socket

AMD Socket SP3

Radeon Graphics

Integrated Graphics

N/A

Ryzen 5 (Zen 4 (Raphael))

Generation

EPYC (Zen (Naples))

Package

6.57 billions

Transistor Count

4.8 billions

5 nm

Manufacturing Process

14 nm

65 W

Power Consumption

120 W

61 °C

Peak Operating Temperature

81 °C

TSMC

Foundry

GlobalFoundries

71 mm²

Die Size

213 mm²

6 nm

I/O Process Size

-

122 mm²

I/O Die Size

-

CPU Performance

3.8 GHz

Performance Core Base Frequency

2.1 GHz

5.1 GHz

Performance Core Turbo Frequency

2.9 GHz

6

Total Core Count

8

12

Total Thread Count

16

100 MHz

Bus Frequency

100 MHz

38.0

Multiplier

21.0

64 KB per core

L1 Cache

96 K per core

1 MB per core

L2 Cache

512 K per core

32 MB shared

L3 Cache

32 MB shared

No

Unlocked Multiplier

Yes

1

SMP

2

Memory Parameters

DDR5-5200

Memory Types

DDR4-2400

Max Memory Channels

8

Yes

ECC Memory Support

Yes

Miscellaneous

5

PCIe Version

3

24

PCIe Lanes

-

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