AMD EPYC 7643 processor review

EPYC 7643 processor released by AMD; release date: 15 Mar 2021. At the time of release, the processor cost $4995. The processor is designed for server-computers and based on Zen 3 microarchitecture.

CPU is unlocked for overclocking. Total number of cores - 48, threads - 96. Maximum CPU clock speed - 3.6 GHz. Manufacturing process technology - 7 nm+. Cache size: L1 - 3 MB, L2 - 24 MB, L3 - 256 MB.

Supported memory types: DDR4-3200. Maximum memory size: 4 TB.

Supported socket types: SP3. Power consumption (TDP): 240 Watt.

Benchmarks

PassMark
Single thread mark

Top 1 CPU

This CPU

4843

2020

PassMark
CPU mark

Top 1 CPU

This CPU

185062

91554

Name	Value
PassMark - Single thread mark	2020
PassMark - CPU mark	91554

Specifications (specs)

Essentials
Architecture codename	Zen 3
Launch date	15 Mar 2021
Launch price (MSRP)	$4995
OPN PIB	100-100000326WOF
OPN Tray	100-000000326
Place in performance rating	238
Vertical segment	Server
Performance
Base frequency	2.3 GHz
L1 cache	3 MB
L2 cache	24 MB
L3 cache	256 MB
Manufacturing process technology	7 nm+
Maximum frequency	3.6 GHz
Number of cores	48
Number of threads	96
Unlocked

Memory
ECC memory support
Max memory channels	8
Maximum memory bandwidth	190.73 GB/s
Maximum memory size	4 TB
Supported memory types	DDR4-3200
Compatibility
Configurable TDP	225-240 Watt
Socket Count	1P/2P
Sockets supported	SP3
Thermal Design Power (TDP)	240 Watt
Peripherals
Max number of PCIe lanes	128
PCI Express revision	4.0
Advanced Technologies
AMD SenseMI
Fused Multiply-Add 3 (FMA3)
Intel® Advanced Vector Extensions (AVX)
Intel® Advanced Vector Extensions 2 (AVX2)
Intel® AES New Instructions
Virtualization
AMD Virtualization (AMD-V™)