AMD EPYC 3451 vs AMD EPYC 7551P

Comparative analysis of AMD EPYC 3451 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 3451

AMD EPYC 7551P

Differences

Reasons to consider the AMD EPYC 3451

CPU is newer: launch date 8 month(s) later
Around 80% lower typical power consumption: 100 Watt vs 180 Watt

Launch date	21 Feb 2018 vs June 2017
Thermal Design Power (TDP)	100 Watt vs 180 Watt

Reasons to consider the AMD EPYC 7551P

Processor is unlocked, an unlocked multiplier allows for easier overclocking
16 more cores, run more applications at once: 32 vs 16
32 more threads: 64 vs 32
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
2097152x more L3 cache, more data can be stored in the L3 cache for quick access later
Around 4% better performance in PassMark - Single thread mark: 1772 vs 1700
Around 96% better performance in PassMark - CPU mark: 38198 vs 19532

Specifications (specs)
Unlocked	Unlocked vs Locked
Number of cores	32 vs 16
Number of threads	64 vs 32
L1 cache	96 KB (per core) vs 96K (per core)
L2 cache	512 KB (per core) vs 512K (per core)
L3 cache	64 MB vs 32MB (shared)
Benchmarks
PassMark - Single thread mark	1772 vs 1700
PassMark - CPU mark	38198 vs 19532

Compare benchmarks

CPU 1: AMD EPYC 3451
CPU 2: AMD EPYC 7551P

PassMark - Single thread mark

CPU 1

CPU 2

1700

1772

PassMark - CPU mark

CPU 1

CPU 2

19532

38198

Name	AMD EPYC 3451	AMD EPYC 7551P
PassMark - Single thread mark	1700	1772
PassMark - CPU mark	19532	38198
Geekbench 4 - Single Core		609
Geekbench 4 - Multi-Core		6648

Compare specifications (specs)

	AMD EPYC 3451	AMD EPYC 7551P
Essentials
Architecture codename	Zen (Snowy Owl)	Zen
Launch date	21 Feb 2018	June 2017
Place in performance rating	1217	1284
Family		AMD EPYC
Series		AMD EPYC 7000 Series
Vertical segment		Server
Performance
Base frequency	2.15 GHz	2 GHz
Die size	2x 213 mm²	192 mm
L1 cache	96K (per core)	96 KB (per core)
L2 cache	512K (per core)	512 KB (per core)
L3 cache	32MB (shared)	64 MB
Manufacturing process technology	14 nm	14 nm
Maximum core temperature	105°C
Maximum frequency	3 GHz	3 GHz
Number of cores	16	32
Number of threads	32	64
Transistor count	4,800 million	4800 million
Unlocked
64 bit support
Memory
ECC memory support
Supported memory types	DDR4-2666 MHz, Dual-channel	DDR4
Max memory channels		8
Maximum memory bandwidth		341 GB/s
Supported memory frequency		2666 MHz
Compatibility
Configurable TDP	80-100 W
Max number of CPUs in a configuration	1	1
Sockets supported	AMD BGA SP4r2	TR4
Thermal Design Power (TDP)	100 Watt	180 Watt
Socket Count		1P
Peripherals
PCIe configurations	Gen 3, 64 Lanes, (CPU only)
PCI Express revision		x128
Virtualization
AMD Virtualization (AMD-V™)