Intel Xeon E5-2643 v3 vs AMD EPYC Embedded 3251

Comparative analysis of Intel Xeon E5-2643 v3 and AMD EPYC Embedded 3251 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Peripherals, Security & Reliability, Advanced Technologies, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark.

Intel Xeon E5-2643 v3

AMD EPYC Embedded 3251

Differences

Reasons to consider the Intel Xeon E5-2643 v3

Around 19% higher clock speed: 3.70 GHz vs 3.1 GHz
Around 50% higher maximum memory size: 768 GB vs 512 GB
Around 10% better performance in PassMark - Single thread mark: 2062 vs 1881
Around 29% better performance in PassMark - CPU mark: 17911 vs 13912

Specifications (specs)
Maximum frequency	3.70 GHz vs 3.1 GHz
Maximum memory size	768 GB vs 512 GB
Max number of CPUs in a configuration	2 vs 1
Benchmarks
PassMark - Single thread mark	2062 vs 1881
PassMark - CPU mark	17911 vs 13912

Reasons to consider the AMD EPYC Embedded 3251

Processor is unlocked, an unlocked multiplier allows for easier overclocking
2 more cores, run more applications at once: 8 vs 6
4 more threads: 16 vs 12
A newer manufacturing process allows for a more powerful, yet cooler running processor: 14 nm vs 22 nm
2.7x lower typical power consumption: 50 Watt vs 135 Watt

Unlocked	Unlocked vs Locked
Number of cores	8 vs 6
Number of threads	16 vs 12
Manufacturing process technology	14 nm vs 22 nm
Thermal Design Power (TDP)	50 Watt vs 135 Watt

Compare benchmarks

CPU 1: Intel Xeon E5-2643 v3
CPU 2: AMD EPYC Embedded 3251

PassMark - Single thread mark

CPU 1

CPU 2

2062

1881

PassMark - CPU mark

CPU 1

CPU 2

17911

13912

Name	Intel Xeon E5-2643 v3	AMD EPYC Embedded 3251
PassMark - Single thread mark	2062	1881
PassMark - CPU mark	17911	13912

Compare specifications (specs)

	Intel Xeon E5-2643 v3	AMD EPYC Embedded 3251
Essentials
Architecture codename	Haswell	Zen
Launch date	Q3'14	21 Feb 2018
Place in performance rating	927	1089
Processor Number	E5-2643V3
Series	Intel® Xeon® Processor E5 v3 Family
Status	Launched
Vertical segment	Server	Server
Performance
64 bit support
Base frequency	3.40 GHz	2.5 GHz
Bus Speed	9.6 GT/s QPI
Manufacturing process technology	22 nm	14 nm
Maximum core temperature	77.3°C
Maximum frequency	3.70 GHz	3.1 GHz
Number of cores	6	8
Number of QPI Links	2
Number of threads	12	16
VID voltage range	0.65V–1.30V
Die size		192 mm
L1 cache		768 KB
L2 cache		4 MB
L3 cache		16 MB
Transistor count		4800 million
Unlocked
Memory
Max memory channels	4	2
Maximum memory bandwidth	68 GB/s	39.74 GB/s
Maximum memory size	768 GB	512 GB
Supported memory types	DDR4 1600/1866/2133	DDR4-2666
ECC memory support
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	2	1
Package Size	52.5mm x 45mm
Sockets supported	FCLGA2011-3
Thermal Design Power (TDP)	135 Watt	50 Watt
Peripherals
Max number of PCIe lanes	40	32
PCI Express revision	3.0	3.0
PCIe configurations	x4, x8, x16	x16, x8, x4, x2
Scalability	2S
Integrated LAN
Total number of SATA ports		8
USB revision		3.0
Security & Reliability
Execute Disable Bit (EDB)
Intel® Identity Protection technology
Intel® OS Guard
Intel® Secure Key technology
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Enhanced Intel SpeedStep® technology
Idle States
Instruction set extensions	Intel® AVX2
Intel 64
Intel® AES New Instructions
Intel® Demand Based Switching
Intel® Flex Memory Access
Intel® Hyper-Threading technology
Intel® TSX-NI
Intel® Turbo Boost technology
Intel® vPro™ Platform Eligibility
Physical Address Extensions (PAE)	46-bit
Thermal Monitoring
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)
AMD Virtualization (AMD-V™)