AMD Opteron 3365 vs AMD EPYC 7251

Comparative analysis of AMD Opteron 3365 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, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core.

AMD Opteron 3365

AMD EPYC 7251

Differences

Reasons to consider the AMD Opteron 3365

Around 14% higher clock speed: 3.3 GHz vs 2.9 GHz
2x more L2 cache, more data can be stored in the L2 cache for quick access later
Around 85% lower typical power consumption: 65 Watt vs 120 Watt

Maximum frequency	3.3 GHz vs 2.9 GHz
L2 cache	8 MB vs 512 KB (per core)
Thermal Design Power (TDP)	65 Watt vs 120 Watt

Reasons to consider the AMD EPYC 7251

Processor is unlocked, an unlocked multiplier allows for easier overclocking
8 more threads: 16 vs 8
A newer manufacturing process allows for a more powerful, yet cooler running processor: 14 nm vs 32 nm
2x more L1 cache, more data can be stored in the L1 cache for quick access later
4x more L3 cache, more data can be stored in the L3 cache for quick access later
Around 48% better performance in PassMark - Single thread mark: 1671 vs 1132
3.6x better performance in PassMark - CPU mark: 14935 vs 4105

Specifications (specs)
Unlocked	Unlocked vs Locked
Number of threads	16 vs 8
Manufacturing process technology	14 nm vs 32 nm
L1 cache	96 KB (per core) vs 384 KB
L3 cache	32 MB vs 8 MB
Benchmarks
PassMark - Single thread mark	1671 vs 1132
PassMark - CPU mark	14935 vs 4105

Compare benchmarks

CPU 1: AMD Opteron 3365
CPU 2: AMD EPYC 7251

PassMark - Single thread mark

CPU 1

CPU 2

1132

1671

PassMark - CPU mark

CPU 1

CPU 2

4105

14935

Name	AMD Opteron 3365	AMD EPYC 7251
PassMark - Single thread mark	1132	1671
PassMark - CPU mark	4105	14935
Geekbench 4 - Single Core	2048
Geekbench 4 - Multi-Core	6931

Compare specifications (specs)

	AMD Opteron 3365	AMD EPYC 7251
Essentials
Family	AMD Opteron	AMD EPYC
OPN Tray	OS3365OLW8KHK
Place in performance rating	1347	1273
Series	AMD Opteron 3300 Series Processor	AMD EPYC 7000 Series
Vertical segment	Server	Server
Architecture codename		Zen
Launch date		June 2017
Performance
Base frequency	2.3 GHz	2.1 GHz
L1 cache	384 KB	96 KB (per core)
L2 cache	8 MB	512 KB (per core)
L3 cache	8 MB	32 MB
Manufacturing process technology	32 nm	14 nm
Maximum core temperature	70.30°C
Maximum frequency	3.3 GHz	2.9 GHz
Number of cores	8	8
Number of threads	8	16
Unlocked
64 bit support
Die size		192 mm
Transistor count		4800 million
Memory
Supported memory frequency	2000 MHz	2400 MHz
Supported memory types	DDR3	DDR4
Max memory channels		8
Maximum memory bandwidth		307 GB/s
Compatibility
Sockets supported	AM3+	TR4
Thermal Design Power (TDP)	65 Watt	120 Watt
Max number of CPUs in a configuration		2
Socket Count		1P/2P
Peripherals
PCI Express revision		x128
Virtualization
AMD Virtualization (AMD-V™)