AMD EPYC 7642 vs AMD EPYC 7702

Comparative analysis of AMD EPYC 7642 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 7642

AMD EPYC 7702

Differences

Reasons to consider the AMD EPYC 7642

Processor is unlocked, an unlocked multiplier allows for easier overclocking
Around 1% higher clock speed: 3.4 GHz vs 3.35 GHz
Around 13% more L1 cache; more data can be stored in the L1 cache for quick access later
Around 3% better performance in PassMark - Single thread mark: 2140 vs 2077
Around 1% better performance in PassMark - CPU mark: 94050 vs 93263

Specifications (specs)
Unlocked	Unlocked vs Locked
Maximum frequency	3.4 GHz vs 3.35 GHz
L1 cache	4.5 MB vs 4 MB
Benchmarks
PassMark - Single thread mark	2140 vs 2077
PassMark - CPU mark	94050 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 L2 cache; more data can be stored in the L2 cache for quick access later
Around 13% lower typical power consumption: 200 Watt vs 225 Watt

Number of cores	64 vs 48
Number of threads	128 vs 96
L2 cache	32 MB vs 24 MB
Thermal Design Power (TDP)	200 Watt vs 225 Watt

Compare benchmarks

CPU 1: AMD EPYC 7642
CPU 2: AMD EPYC 7702

PassMark - Single thread mark

CPU 1

CPU 2

2140

2077

PassMark - CPU mark

CPU 1

CPU 2

94050

93263

Name	AMD EPYC 7642	AMD EPYC 7702
PassMark - Single thread mark	2140	2077
PassMark - CPU mark	94050	93263

Compare specifications (specs)

	AMD EPYC 7642	AMD EPYC 7702
Essentials
Architecture codename	Zen 2	Zen 2
Launch date	7 Aug 2019	7 Aug 2019
Place in performance rating	112	128
Vertical segment	Server	Server
Launch price (MSRP)		$6450
OPN PIB		100-100000038WOF
OPN Tray		100-000000038
Performance
Base frequency	2.4 GHz	2.0 GHz
L1 cache	4.5 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	3.4 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	190.7 GB/s	204.8 GB/s
Maximum memory size	4 TB	4 TB
Supported memory types	DDR4-3200	DDR4-3200
Compatibility
Max number of CPUs in a configuration	2
Sockets supported	SP3	SP3
Thermal Design Power (TDP)	225 Watt	200 Watt
Socket Count		1P/2P
Peripherals
Max number of PCIe lanes	128	128
PCI Express revision	4.0	4.0
PCIe configurations	x16, x8	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™)