Intel Xeon E5-4640 v4 vs AMD EPYC Embedded 3251

Comparative analysis of Intel Xeon E5-4640 v4 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 E5-4640 v4

AMD EPYC Embedded 3251

Differences

Reasons to consider the Intel Xeon E5-4640 v4

4 more cores, run more applications at once: 12 vs 8
8 more threads: 24 vs 16
3x more maximum memory size: 1.5 TB vs 512 GB
Around 62% better performance in PassMark - CPU mark: 22559 vs 13912

Specifications (specs)
Number of cores	12 vs 8
Number of threads	24 vs 16
Maximum memory size	1.5 TB vs 512 GB
Max number of CPUs in a configuration	4 vs 1
Benchmarks
PassMark - CPU mark	22559 vs 13912

Reasons to consider the AMD EPYC Embedded 3251

Processor is unlocked, an unlocked multiplier allows for easier overclocking
Around 19% higher clock speed: 3.1 GHz vs 2.60 GHz
2.1x lower typical power consumption: 50 Watt vs 105 Watt
Around 20% better performance in PassMark - Single thread mark: 1881 vs 1573

Specifications (specs)
Unlocked	Unlocked vs Locked
Maximum frequency	3.1 GHz vs 2.60 GHz
Thermal Design Power (TDP)	50 Watt vs 105 Watt
Benchmarks
PassMark - Single thread mark	1881 vs 1573

Compare benchmarks

CPU 1: Intel Xeon E5-4640 v4
CPU 2: AMD EPYC Embedded 3251

PassMark - Single thread mark

CPU 1

CPU 2

1573

1881

PassMark - CPU mark

CPU 1

CPU 2

22559

13912

Name	Intel Xeon E5-4640 v4	AMD EPYC Embedded 3251
PassMark - Single thread mark	1573	1881
PassMark - CPU mark	22559	13912

Compare specifications (specs)

	Intel Xeon E5-4640 v4	AMD EPYC Embedded 3251
Essentials
Architecture codename	Broadwell	Zen
Launch date	Q2'16	21 Feb 2018
Place in performance rating	1199	1189
Processor Number	E5-4640V4
Series	Intel® Xeon® Processor E5 v4 Family
Status	Launched
Vertical segment	Server	Server
Performance
64 bit support
Base frequency	2.10 GHz	2.5 GHz
Bus Speed	8 GT/s QPI
Manufacturing process technology	14 nm	14 nm
Maximum core temperature	80
Maximum frequency	2.60 GHz	3.1 GHz
Number of cores	12	8
Number of QPI Links	2
Number of threads	24	16
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	1.5 TB	512 GB
Supported memory types	DDR4	DDR4-2666
ECC memory support
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	4	1
Package Size	45mm x 52.5mm
Sockets supported	FCLGA2011-3
Thermal Design Power (TDP)	105 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	4S
Integrated LAN
Total number of SATA ports		8
USB revision		3.0
Security & Reliability
Execute Disable Bit (EDB)
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® Flex Memory Access
Intel® Hyper-Threading technology
Intel® Instruction Replay Technology
Intel® TSX-NI
Intel® Turbo Boost technology
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™)