AMD EPYC 7642 vs AMD EPYC 7662

Comparative analysis of AMD EPYC 7642 and AMD EPYC 7662 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 7662

Differences

Reasons to consider the AMD EPYC 7642

Processor is unlocked, an unlocked multiplier allows for easier overclocking
Around 3% higher clock speed: 3.4 GHz vs 3.3 GHz
Around 13% more L1 cache; more data can be stored in the L1 cache for quick access later
Around 2% better performance in PassMark - Single thread mark: 2140 vs 2089

Specifications (specs)
Unlocked	Unlocked vs Locked
Maximum frequency	3.4 GHz vs 3.3 GHz
L1 cache	4.5 MB vs 4 MB
Benchmarks
PassMark - Single thread mark	2140 vs 2089

Reasons to consider the AMD EPYC 7662

CPU is newer: launch date 6 month(s) later
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 3% better performance in PassMark - CPU mark: 97178 vs 94050

Specifications (specs)
Launch date	19 Feb 2020 vs 7 Aug 2019
Number of cores	64 vs 48
Number of threads	128 vs 96
L2 cache	32 MB vs 24 MB
Benchmarks
PassMark - CPU mark	97178 vs 94050

Compare benchmarks

CPU 1: AMD EPYC 7642
CPU 2: AMD EPYC 7662

PassMark - Single thread mark

CPU 1

CPU 2

2140

2089

PassMark - CPU mark

CPU 1

CPU 2

94050

97178

Name	AMD EPYC 7642	AMD EPYC 7662
PassMark - Single thread mark	2140	2089
PassMark - CPU mark	94050	97178

Compare specifications (specs)

	AMD EPYC 7642	AMD EPYC 7662
Essentials
Architecture codename	Zen 2	Zen 3
Launch date	7 Aug 2019	19 Feb 2020
Place in performance rating	112	104
Vertical segment	Server	Server
OPN PIB		100-100000137WOF
OPN Tray		100-000000137
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	3.3 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	190.73 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	225 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™)