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
3778
2713
PassMark
CPU mark
Top 1 CPU
This CPU
87767
77101
Name Value
PassMark - Single thread mark 2713
PassMark - CPU mark 77101

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 7
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™)