AMD EPYC 7663 vs AMD EPYC 9634

VS

AMD EPYC 7663

AMD EPYC 9634

We compared two server CPUs: AMD EPYC 7663 with 56 cores 2GHz 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 7663 's Advantages

Lower TDP (240W vs 290W)

AMD EPYC 9634 's Advantages

Released 1 years and 8 months late

Higher specification of memory (4800 vs 3200)

Newer PCIe version (5 vs 4)

Higher base frequency (2.25GHz vs 2GHz)

Larger L3 cache size (384MB vs 256MB)

More modern manufacturing process (5nm vs 7nm)

Score

Benchmark

Geekbench 6 Single Core

AMD EPYC 7663

777

AMD EPYC 9634 +62%

1262

Geekbench 6 Multi Core

AMD EPYC 7663 +13%

6330

AMD EPYC 9634

5595

AMD EPYC 7663

VS

AMD EPYC 9634

General Parameters

Mar 2021

Release Date

Nov 2022

AMD

Manufacturer

AMD

Server

Type

Server

Milan

Core Architecture

Genoa

AMD Socket SP3

Socket

AMD Socket SP5

N/A

Integrated Graphics

N/A

EPYC (Zen 3 (Milan))

Generation

EPYC (Zen 4 (Genoa))

Package

33.2 billions

Transistor Count

78.84 billions

7 nm

Manufacturing Process

5 nm

240 W

Power Consumption

290 W

TSMC

Foundry

TSMC

8x81 mm²

Die Size

12x72 mm²

12 nm

I/O Process Size

6 nm

416 mm²

I/O Die Size

397 mm²

CPU Performance

2 GHz

Performance Core Base Frequency

2.25 GHz

3.5 GHz

Performance Core Turbo Frequency

3.7 GHz

56

Total Core Count

84

112

Total Thread Count

168

100 MHz

Bus Frequency

100 MHz

20.0

Multiplier

22.5

64 KB per core

L1 Cache

64 K per core

512 KB per core

L2 Cache

1 MB per core

256 MB shared

L3 Cache

384 MB shared

No

Unlocked Multiplier

No

7

Cores per CCD

-

2

SMP

2

Memory Parameters

DDR4-3200

Memory Types

DDR5-4800

8

Max Memory Channels

12

Yes

ECC Memory Support

Yes

Miscellaneous

4

PCIe Version

5

128

PCIe Lanes

128

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