AMD EPYC 9645 vs AMD EPYC 9634

VS

AMD EPYC 9645

AMD EPYC 9634

We compared two server CPUs: AMD EPYC 9645 with 96 cores 2.3GHz and AMD EPYC 9634 with 84 cores 2.25GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

AMD EPYC 9645 's Advantages

Released 1 years and 11 months late

Higher specification of memory (6000 vs 4800)

Higher base frequency (2.3GHz vs 2.25GHz)

More modern manufacturing process (3nm vs 5nm)

AMD EPYC 9634 's Advantages

Larger L3 cache size (384MB vs 256MB)

Lower TDP (290W vs 320W)

Score

AMD EPYC 9645

VS

AMD EPYC 9634

General Parameters

Oct 2024

Release Date

Nov 2022

AMD

Manufacturer

AMD

Server

Type

Server

Turin

Core Architecture

Genoa

AMD Socket SP5

Socket

AMD Socket SP5

N/A

Integrated Graphics

N/A

EPYC(Zen 5c (Turin))

Generation

EPYC (Zen 4 (Genoa))

Package

Transistor Count

78.84 billions

3 nm

Manufacturing Process

5 nm

320 W

Power Consumption

290 W

TSMC

Foundry

TSMC

mm²

Die Size

12x72 mm²

6 nm

I/O Process Size

6 nm

mm²

I/O Die Size

397 mm²

CPU Performance

96

Performance Cores

-

192

Performance Core Threads

-

2.3 GHz

Performance Core Base Frequency

2.25 GHz

3.7 GHz

Performance Core Turbo Frequency

3.7 GHz

96

Total Core Count

84

192

Total Thread Count

168

100 MHz

Bus Frequency

100 MHz

23.0

Multiplier

22.5

80 KB per core

L1 Cache

64 K per core

1 MB per core

L2 Cache

1 MB per core

256 MB shared

L3 Cache

384 MB shared

No

Unlocked Multiplier

No

2

SMP

2

Memory Parameters

DDR5-6000

Memory Types

DDR5-4800

6 TB

Max Memory Size

-

12

Max Memory Channels

12

576 GB/s

Max Memory Bandwidth

-

Yes

ECC Memory Support

Yes

Miscellaneous

AMD EPYC 9645

Official Website

-

5

PCIe Version

5

128

PCIe Lanes

128

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