AMD EPYC 7643 vs AMD EPYC 7502

Comparative analysis of AMD EPYC 7643 and AMD EPYC 7502 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 7502

Differences

Reasons to consider the AMD EPYC 7643

CPU is newer: launch date 1 year(s) 7 month(s) later
16 more cores, run more applications at once: 48 vs 32
32 more threads: 96 vs 64
Around 7% higher clock speed: 3.6 GHz vs 3.35 GHz
Around 50% more L1 cache; more data can be stored in the L1 cache for quick access later
Around 50% 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 10% better performance in PassMark - CPU mark: 88348 vs 80300

Specifications (specs)
Launch date	15 Mar 2021 vs 7 Aug 2019
Number of cores	48 vs 32
Number of threads	96 vs 64
Maximum frequency	3.6 GHz vs 3.35 GHz
L1 cache	3 MB vs 2 MB
L2 cache	24 MB vs 16 MB
L3 cache	256 MB vs 128 MB
Benchmarks
PassMark - CPU mark	88348 vs 80300

Reasons to consider the AMD EPYC 7502

Around 33% lower typical power consumption: 180 Watt vs 240 Watt
Around 14% better performance in PassMark - Single thread mark: 2189 vs 1915

Specifications (specs)
Thermal Design Power (TDP)	180 Watt vs 240 Watt
Benchmarks
PassMark - Single thread mark	2189 vs 1915

Compare benchmarks

CPU 1: AMD EPYC 7643
CPU 2: AMD EPYC 7502

PassMark - Single thread mark

CPU 1

CPU 2

1915

2189

PassMark - CPU mark

CPU 1

CPU 2

88348

80300

Name	AMD EPYC 7643	AMD EPYC 7502
PassMark - Single thread mark	1915	2189
PassMark - CPU mark	88348	80300

Compare specifications (specs)

	AMD EPYC 7643	AMD EPYC 7502
Essentials
Architecture codename	Zen 3	Zen 2
Launch date	15 Mar 2021	7 Aug 2019
Launch price (MSRP)	$4995	$2600
OPN PIB	100-100000326WOF	100-100000054WOF
OPN Tray	100-000000326	100-000000054
Place in performance rating	224	215
Vertical segment	Server	Server
Family		EPYC
Processor Number		7502
Series		7002
Performance
Base frequency	2.3 GHz	2.5 GHz
L1 cache	3 MB	2 MB
L2 cache	24 MB	16 MB
L3 cache	256 MB	128 MB
Manufacturing process technology	7 nm+
Maximum frequency	3.6 GHz	3.35 GHz
Number of cores	48	32
Number of threads	96	64
Unlocked
Memory
ECC memory support
Max memory channels	8	8
Maximum memory bandwidth	190.73 GB/s	204.8 GB/s
Maximum memory size	4 TB	4 TB
Supported memory types	DDR4-3200	DDR4-3200
Compatibility
Configurable TDP	225-240 Watt
Socket Count	1P/2P	1P/2P
Sockets supported	SP3	SP3
Thermal Design Power (TDP)	240 Watt	180 Watt
Peripherals
Max number of PCIe lanes	128	128
PCI Express revision	4.0	4.0
PCIe configurations		x16, x8
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™)