AMD EPYC 7281 vs AMD EPYC 7551P

Comparative analysis of AMD EPYC 7281 and AMD EPYC 7551P processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Peripherals, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core.

AMD EPYC 7281

AMD EPYC 7551P

Differences

Reasons to consider the AMD EPYC 7281

Around 6% lower typical power consumption: 155/170 Watt vs 180 Watt

Max number of CPUs in a configuration	2 vs 1
Thermal Design Power (TDP)	155/170 Watt vs 180 Watt

Reasons to consider the AMD EPYC 7551P

16 more cores, run more applications at once: 32 vs 16
32 more threads: 64 vs 32
Around 11% higher clock speed: 3 GHz vs 2.7 GHz
2x more L1 cache, more data can be stored in the L1 cache for quick access later
2x 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 9% better performance in PassMark - Single thread mark: 1780 vs 1626
Around 77% better performance in PassMark - CPU mark: 38362 vs 21621

Specifications (specs)
Number of cores	32 vs 16
Number of threads	64 vs 32
Maximum frequency	3 GHz vs 2.7 GHz
L1 cache	96 KB (per core) vs 96 KB (per core)
L2 cache	512 KB (per core) vs 512 KB (per core)
L3 cache	64 MB vs 32 MB
Benchmarks
PassMark - Single thread mark	1780 vs 1626
PassMark - CPU mark	38362 vs 21621

Compare benchmarks

CPU 1: AMD EPYC 7281
CPU 2: AMD EPYC 7551P

PassMark - Single thread mark

CPU 1

CPU 2

1626

1780

PassMark - CPU mark

CPU 1

CPU 2

21621

38362

Name	AMD EPYC 7281	AMD EPYC 7551P
PassMark - Single thread mark	1626	1780
PassMark - CPU mark	21621	38362
Geekbench 4 - Single Core		609
Geekbench 4 - Multi-Core		6648

Compare specifications (specs)

	AMD EPYC 7281	AMD EPYC 7551P
Essentials
Architecture codename	Zen	Zen
Family	AMD EPYC	AMD EPYC
Launch date	June 2017	June 2017
Place in performance rating	1096	1150
Series	AMD EPYC 7000 Series	AMD EPYC 7000 Series
Vertical segment	Server	Server
Performance
64 bit support
Base frequency	2.1 GHz	2 GHz
Die size	192 mm	192 mm
L1 cache	96 KB (per core)	96 KB (per core)
L2 cache	512 KB (per core)	512 KB (per core)
L3 cache	32 MB	64 MB
Manufacturing process technology	14 nm	14 nm
Maximum frequency	2.7 GHz	3 GHz
Number of cores	16	32
Number of threads	32	64
Transistor count	4800 million	4800 million
Unlocked
Memory
Max memory channels	8	8
Maximum memory bandwidth	307/341 GB/s	341 GB/s
Supported memory frequency	2400/2666 MHz	2666 MHz
Supported memory types	DDR4	DDR4
Compatibility
Max number of CPUs in a configuration	2	1
Socket Count	1P/2P	1P
Sockets supported	TR4	TR4
Thermal Design Power (TDP)	155/170 Watt	180 Watt
Peripherals
PCI Express revision	x128	x128
Virtualization
AMD Virtualization (AMD-V™)