CPU Comparison

A

AMD

AMD

AMD EPYC 7643P

CORE STATE Milan

CORE SPECS 48 Cores / 96 Threads

CLOCK SPEED 2.3 Base / 3.6 GHz Turbo

CACHE 256 MB (shared)

MAX TDP 225W

ARCHITECTURE Zen 3

nm

PROCESS 7 nm

LAUNCH DATE 2023

VS

i

Intel

INTEL

Xeon 6521P

CORE STATE Granite Rapids

CORE SPECS 24 Cores / 48 Threads

CLOCK SPEED 2.6 Base / 4.1 GHz Turbo

CACHE 144 MB (shared)

MAX TDP 225W

ARCHITECTURE Granite Rapids

nm

PROCESS 5 nm

LAUNCH DATE 2025

PERFORMANCE BENCHMARKS

cinebench_cinebench_r15_multicore

6,623

4,966

cinebench_cinebench_r15_singlecore

934

701

cinebench_cinebench_r20_multicore

27,598

20,695

cinebench_cinebench_r20_singlecore

3,895

2,921

cinebench_cinebench_r23_multicore

65,710

49,274

cinebench_cinebench_r23_singlecore

9,276

6,956

passmark_data_compression

1,326,051

840,355

passmark_data_encryption

95,606

47,452

passmark_extended_instructions

67,398

57,751

passmark_find_prime_numbers

651

437

passmark_floating_point_math

216,592

155,294

passmark_integer_math

390,775

214,076

passmark_multithread

77,307

57,970

passmark_physics

8,002

4,105

passmark_random_string_sorting

160,274

98,119

passmark_single_thread

2,655

2,829

passmark_singlethread

2,655

2,829

DETAILED SPECIFICATIONS

SPECIFICATION

EPYC 7643P

6521P

Core Specs

Cores

48

24 -50.0%

Threads

96

48 -50.0%

Base Clock (GHz)

2.3

2.6 +13.0%

Boost Clock (GHz)

3.6

4.1 +13.9%

Frequency (GHz)

2.3

2.6 +13.0%

Turbo Clock (GHz)

3.6

4.1 +13.9%

Multiplier

23

26 +13.0%

SMP CPUs

1

1 0.0%

Cache

L1 Cache

64 KB (per core)

112 KB (per core)

L2 Cache

512 KB (per core)

2 MB (per core)

L3 Cache

256 MB (shared)

144 MB (shared)

Power

TDP (W)

225

225 0.0%

Configurable TDP

240 W

—

Architecture

Architecture

Zen 3

Granite Rapids

Codename

Milan

Granite Rapids

Generation

EPYC (Zen 3 (Milan))

Xeon 6 (Granite Rapids-SP)

Process Size

7 nm

5 nm

Transistors

33,200 million

—

Die Size

8x 81 mm²

598 mm²

Foundry

TSMC

Intel

Memory

Memory Support

DDR4

DDR5

Memory Bus

Eight-channel

Eight-channel

Memory Bandwidth

204.8 GB/s

409.6 GB/s

ECC Memory

Yes

Yes

Platform

Socket

AMD Socket SP3

Intel Socket 4710

PCIe

Gen 4, 128 Lanes(CPU only)

Gen 5, 136 Lanes(CPU only)

AMD Multi-Die

CCDs

8

—

Cores per CCD

8

—

IO Process Size

12 nm

10 nm

Interconnect

CXL

—

Gen 2.0, 64 Lanes (Shared with PCI-E)

Other

Market

Server/Workstation

Server/Workstation

Production Status

Active

Active

Launch Price

$2722

$1250

Part Number

100-000001285

SRVNS

Package

FCLGA-4094

FC-LGA18N

Tj Max

—

100°C

Bundled Cooler

—

None

View EPYC 7643P Details View Xeon 6521P Details