AMD EPYC 7643 vs AMD EPYC 7443P

Comparative analysis of AMD EPYC 7643 and AMD EPYC 7443P processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Peripherals, Advanced Technologies, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark.

AMD EPYC 7643

AMD EPYC 7443P

Differences

Reasons to consider the AMD EPYC 7643

24 more cores, run more applications at once: 48 vs 24
48 more threads: 96 vs 48
2x more L1 cache, more data can be stored in the L1 cache for quick access later
2x more L2 cache, more data can be stored in the L2 cache for quick access later
2x more L3 cache, more data can be stored in the L3 cache for quick access later
Around 61% better performance in PassMark - CPU mark: 91554 vs 56948

Specifications (specs)
Number of cores	48 vs 24
Number of threads	96 vs 48
L1 cache	3 MB vs 1536 KB
L2 cache	24 MB vs 12 MB
L3 cache	256 MB vs 128 MB
Benchmarks
PassMark - CPU mark	91554 vs 56948

Reasons to consider the AMD EPYC 7443P

Around 11% higher clock speed: 4.0 GHz vs 3.6 GHz
Around 20% lower typical power consumption: 200 Watt vs 240 Watt
Around 44% better performance in PassMark - Single thread mark: 2908 vs 2020

Specifications (specs)
Maximum frequency	4.0 GHz vs 3.6 GHz
Thermal Design Power (TDP)	200 Watt vs 240 Watt
Benchmarks
PassMark - Single thread mark	2908 vs 2020

Compare benchmarks

CPU 1: AMD EPYC 7643
CPU 2: AMD EPYC 7443P

PassMark - Single thread mark

CPU 1

CPU 2

2020

2908

PassMark - CPU mark

CPU 1

CPU 2

91554

56948

Name	AMD EPYC 7643	AMD EPYC 7443P
PassMark - Single thread mark	2020	2908
PassMark - CPU mark	91554	56948

Compare specifications (specs)

	AMD EPYC 7643	AMD EPYC 7443P
Essentials
Architecture codename	Zen 3	Zen 3
Launch date	15 Mar 2021	15 Mar 2021
Launch price (MSRP)	$4995	$1337
OPN PIB	100-100000326WOF	100-100000342WOF
OPN Tray	100-000000326	100-000000342
Place in performance rating	238	243
Vertical segment	Server	Server
Performance
Base frequency	2.3 GHz	2.85 GHz
L1 cache	3 MB	1536 KB
L2 cache	24 MB	12 MB
L3 cache	256 MB	128 MB
Manufacturing process technology	7 nm+	7 nm+
Maximum frequency	3.6 GHz	4.0 GHz
Number of cores	48	24
Number of threads	96	48
Unlocked
Memory
ECC memory support
Max memory channels	8	8
Maximum memory bandwidth	190.73 GB/s	190.73 GB/s
Maximum memory size	4 TB	4 TB
Supported memory types	DDR4-3200	DDR4-3200
Compatibility
Configurable TDP	225-240 Watt	165-200 Watt
Socket Count	1P/2P	1P
Sockets supported	SP3	SP3
Thermal Design Power (TDP)	240 Watt	200 Watt
Peripherals
Max number of PCIe lanes	128	128
PCI Express revision	4.0	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™)