AMD EPYC 7542 vs AMD EPYC 7551

Comparative analysis of AMD EPYC 7542 and AMD EPYC 7551 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, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core.

AMD EPYC 7542

AMD EPYC 7551

Differences

Reasons to consider the AMD EPYC 7542

CPU is newer: launch date 2 year(s) 2 month(s) later
Around 13% higher clock speed: 3.4 GHz vs 3 GHz
A newer manufacturing process allows for a more powerful, yet cooler running processor: 7 nm, 14 nm vs 14 nm
2x more L3 cache, more data can be stored in the L3 cache for quick access later
Around 16% better performance in PassMark - Single thread mark: 2073 vs 1789
Around 28% better performance in PassMark - CPU mark: 73885 vs 57865

Specifications (specs)
Launch date	7 Aug 2019 vs June 2017
Maximum frequency	3.4 GHz vs 3 GHz
Manufacturing process technology	7 nm, 14 nm vs 14 nm
L3 cache	128 MB vs 64 MB
Benchmarks
PassMark - Single thread mark	2073 vs 1789
PassMark - CPU mark	73885 vs 57865

Reasons to consider the AMD EPYC 7551

Processor is unlocked, an unlocked multiplier allows for easier overclocking
Around 50% more L1 cache; more data can be stored in the L1 cache for quick access later
Around 25% lower typical power consumption: 180 Watt vs 225 Watt

Unlocked	Unlocked vs Locked
L1 cache	96 KB (per core) vs 2 MB
Thermal Design Power (TDP)	180 Watt vs 225 Watt

Compare benchmarks

CPU 1: AMD EPYC 7542
CPU 2: AMD EPYC 7551

PassMark - Single thread mark

CPU 1

CPU 2

2073

1789

PassMark - CPU mark

CPU 1

CPU 2

73885

57865

Name	AMD EPYC 7542	AMD EPYC 7551
PassMark - Single thread mark	2073	1789
PassMark - CPU mark	73885	57865
Geekbench 4 - Single Core		2956
Geekbench 4 - Multi-Core		20125

Compare specifications (specs)

	AMD EPYC 7542	AMD EPYC 7551
Essentials
Architecture codename	Zen 2	Zen
Launch date	7 Aug 2019	June 2017
Launch price (MSRP)	$3400
OPN PIB	100-100000075WOF
OPN Tray	100-000000075
Place in performance rating	292	258
Vertical segment	Server	Server
Family		AMD EPYC
Price now		$3,813.99
Series		AMD EPYC 7000 Series
Value for money (0-100)		1.43
Performance
Base frequency	2.9 GHz	2 GHz
L1 cache	2 MB	96 KB (per core)
L2 cache	16 MB	512 KB (per core)
L3 cache	128 MB	64 MB
Manufacturing process technology	7 nm, 14 nm	14 nm
Maximum frequency	3.4 GHz	3 GHz
Number of cores	32	32
Number of threads	64	64
Unlocked
64 bit support
Die size		192 mm
Transistor count		4800 million
Memory
ECC memory support
Max memory channels	8	8
Maximum memory bandwidth	190.7 GB/s	341 GB/s
Maximum memory size	4 TB
Supported memory types	DDR4-3200	DDR4
Supported memory frequency		2666 MHz
Compatibility
Socket Count	1P/2P	1P/2P
Sockets supported	SP3	TR4
Thermal Design Power (TDP)	225 Watt	180 Watt
Max number of CPUs in a configuration		2
Peripherals
Max number of PCIe lanes	128
PCI Express revision	4.0	x128
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™)