AMD EPYC 7643 vs AMD EPYC 7702

Comparative analysis of AMD EPYC 7643 and AMD EPYC 7702 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 7702

Differences

Reasons to consider the AMD EPYC 7643

CPU is newer: launch date 1 year(s) 7 month(s) later
Around 7% higher clock speed: 3.6 GHz vs 3.35 GHz
Around 29% better performance in PassMark - Single thread mark: 2689 vs 2077
Around 24% better performance in PassMark - CPU mark: 115676 vs 93263

Specifications (specs)
Launch date	15 Mar 2021 vs 7 Aug 2019
Maximum frequency	3.6 GHz vs 3.35 GHz
Benchmarks
PassMark - Single thread mark	2689 vs 2077
PassMark - CPU mark	115676 vs 93263

Reasons to consider the AMD EPYC 7702

16 more cores, run more applications at once: 64 vs 48
32 more threads: 128 vs 96
Around 33% more L1 cache; more data can be stored in the L1 cache for quick access later
Around 33% more L2 cache; more data can be stored in the L2 cache for quick access later
Around 20% lower typical power consumption: 200 Watt vs 240 Watt

Number of cores	64 vs 48
Number of threads	128 vs 96
L1 cache	4 MB vs 3 MB
L2 cache	32 MB vs 24 MB
Thermal Design Power (TDP)	200 Watt vs 240 Watt

Compare benchmarks

CPU 1: AMD EPYC 7643
CPU 2: AMD EPYC 7702

PassMark - Single thread mark

CPU 1

CPU 2

2689

2077

PassMark - CPU mark

CPU 1

CPU 2

115676

93263

Name	AMD EPYC 7643	AMD EPYC 7702
PassMark - Single thread mark	2689	2077
PassMark - CPU mark	115676	93263

Compare specifications (specs)

	AMD EPYC 7643	AMD EPYC 7702
Essentials
Architecture codename	Zen 3	Zen 2
Launch date	15 Mar 2021	7 Aug 2019
Launch price (MSRP)	$4995	$6450
OPN PIB	100-100000326WOF	100-100000038WOF
OPN Tray	100-000000326	100-000000038
Place in performance rating	22	124
Vertical segment	Server	Server
Performance
Base frequency	2.3 GHz	2.0 GHz
L1 cache	3 MB	4 MB
L2 cache	24 MB	32 MB
L3 cache	256 MB	256 MB
Manufacturing process technology	7 nm+	7 nm, 14 nm
Maximum frequency	3.6 GHz	3.35 GHz
Number of cores	48	64
Number of threads	96	128
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	200 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™)