AMD EPYC 3451 vs AMD EPYC 7251

Comparative analysis of AMD EPYC 3451 and AMD EPYC 7251 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.

AMD EPYC 3451

AMD EPYC 7251

Differences

Reasons to consider the AMD EPYC 3451

CPU is newer: launch date 8 month(s) later
8 more cores, run more applications at once: 16 vs 8
16 more threads: 32 vs 16
Around 3% higher clock speed: 3 GHz vs 2.9 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
Around 20% lower typical power consumption: 100 Watt vs 120 Watt
Around 2% better performance in PassMark - Single thread mark: 1700 vs 1671
Around 31% better performance in PassMark - CPU mark: 19532 vs 14935

Specifications (specs)
Launch date	21 Feb 2018 vs June 2017
Number of cores	16 vs 8
Number of threads	32 vs 16
Maximum frequency	3 GHz vs 2.9 GHz
L1 cache	96K (per core) vs 96 KB (per core)
L2 cache	512K (per core) vs 512 KB (per core)
Thermal Design Power (TDP)	100 Watt vs 120 Watt
Benchmarks
PassMark - Single thread mark	1700 vs 1671
PassMark - CPU mark	19532 vs 14935

Reasons to consider the AMD EPYC 7251

Processor is unlocked, an unlocked multiplier allows for easier overclocking
1048576x more L3 cache, more data can be stored in the L3 cache for quick access later

Unlocked	Unlocked vs Locked
L3 cache	32 MB vs 32MB (shared)
Max number of CPUs in a configuration	2 vs 1

Compare benchmarks

CPU 1: AMD EPYC 3451
CPU 2: AMD EPYC 7251

PassMark - Single thread mark

CPU 1

CPU 2

1700

1671

PassMark - CPU mark

CPU 1

CPU 2

19532

14935

Name	AMD EPYC 3451	AMD EPYC 7251
PassMark - Single thread mark	1700	1671
PassMark - CPU mark	19532	14935

Compare specifications (specs)

	AMD EPYC 3451	AMD EPYC 7251
Essentials
Architecture codename	Zen (Snowy Owl)	Zen
Launch date	21 Feb 2018	June 2017
Place in performance rating	1184	1271
Family		AMD EPYC
Series		AMD EPYC 7000 Series
Vertical segment		Server
Performance
Base frequency	2.15 GHz	2.1 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)	32 MB
Manufacturing process technology	14 nm	14 nm
Maximum core temperature	105°C
Maximum frequency	3 GHz	2.9 GHz
Number of cores	16	8
Number of threads	32	16
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		307 GB/s
Supported memory frequency		2400 MHz
Compatibility
Configurable TDP	80-100 W
Max number of CPUs in a configuration	1	2
Sockets supported	AMD BGA SP4r2	TR4
Thermal Design Power (TDP)	100 Watt	120 Watt
Socket Count		1P/2P
Peripherals
PCIe configurations	Gen 3, 64 Lanes, (CPU only)
PCI Express revision		x128
Virtualization
AMD Virtualization (AMD-V™)