Intel Xeon W-2191B vs AMD EPYC 7251

Comparative analysis of Intel Xeon W-2191B and AMD EPYC 7251 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Peripherals, Security & Reliability, Advanced Technologies, Virtualization. Benchmark processor performance analysis: CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s), PassMark - Single thread mark, PassMark - CPU mark.

Intel Xeon W-2191B

AMD EPYC 7251

Differences

Reasons to consider the Intel Xeon W-2191B

10 more cores, run more applications at once: 18 vs 8
20 more threads: 36 vs 16
Around 148176% higher clock speed: 4300 MHz vs 2.9 GHz
Around 50% more L1 cache; more data can be stored in the L1 cache for quick access later
4.5x more L2 cache, more data can be stored in the L2 cache for quick access later
Around 52% better performance in PassMark - Single thread mark: 2541 vs 1671
Around 90% better performance in PassMark - CPU mark: 28371 vs 14935

Specifications (specs)
Number of cores	18 vs 8
Number of threads	36 vs 16
Maximum frequency	4300 MHz vs 2.9 GHz
L1 cache	1.125 MB vs 96 KB (per core)
L2 cache	18 MB vs 512 KB (per core)
Benchmarks
PassMark - Single thread mark	2541 vs 1671
PassMark - CPU mark	28371 vs 14935

Reasons to consider the AMD EPYC 7251

Processor is unlocked, an unlocked multiplier allows for easier overclocking
Around 29% 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 24.75 MB

Compare benchmarks

CPU 1: Intel Xeon W-2191B
CPU 2: AMD EPYC 7251

PassMark - Single thread mark

CPU 1

CPU 2

2541

1671

PassMark - CPU mark

CPU 1

CPU 2

28371

14935

Name	Intel Xeon W-2191B	AMD EPYC 7251
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	18.199
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	119.388
CompuBench 1.5 Desktop - T-Rex (Frames/s)	1.17
CompuBench 1.5 Desktop - Video Composition (Frames/s)	9.337
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	26.355
PassMark - Single thread mark	2541	1671
PassMark - CPU mark	28371	14935

Compare specifications (specs)

	Intel Xeon W-2191B	AMD EPYC 7251
Essentials
Architecture codename	Skylake W	Zen
Family	Xeon W	AMD EPYC
Launch date	5 June 2017	June 2017
Place in performance rating	1130	1181
Processor Number	W-2191B
Series	W-2000	AMD EPYC 7000 Series
Vertical segment	Server	Server
Performance
64 bit support
Base frequency	2300 MHz	2.1 GHz
Bus Speed	8 GT/s DMI
L1 cache	1.125 MB	96 KB (per core)
L2 cache	18 MB	512 KB (per core)
L3 cache	24.75 MB	32 MB
Manufacturing process technology	14 nm	14 nm
Maximum frequency	4300 MHz	2.9 GHz
Number of cores	18	8
Number of threads	36	16
Unlocked
Die size		192 mm
Transistor count		4800 million
Memory
ECC memory support
Max memory channels	4	8
Maximum memory bandwidth	79.47 GB/s	307 GB/s
Maximum memory size	512 GB
Supported memory types	DDR4-2666	DDR4
Supported memory frequency		2400 MHz
Compatibility
Sockets supported	FCLGA-2066 (R4)	TR4
Max number of CPUs in a configuration		2
Socket Count		1P/2P
Thermal Design Power (TDP)		120 Watt
Peripherals
Max number of PCIe lanes	48
PCI Express revision	3.0	x128
PCIe configurations	1x16, 1x8, 1x4
Security & Reliability
Intel® Identity Protection technology
Intel® Memory Protection Extensions (Intel® MPX)
Intel® OS Guard
Intel® Secure Key technology
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Enhanced Intel SpeedStep® technology
Fused Multiply-Add 3 (FMA3)
Intel® Advanced Vector Extensions (AVX)
Intel® Advanced Vector Extensions 2 (AVX2)
Intel® AES New Instructions
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Intel® vPro™ Platform Eligibility
Speed Shift technology
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™)