EPYC 7251 vs Xeon Silver 4208

Primary details

Comparing Xeon Silver 4208 and EPYC 7251 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	991	805
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	18.54	2.79
Market segment	Server	Server
Series	Intel Xeon Silver	AMD EPYC
Power efficiency	7.88	7.41
Architecture codename	Cascade Lake (2019−2020)	Naples (2017−2018)
Release date	2 April 2019 (5 years ago)	29 June 2017 (7 years ago)
Launch price (MSRP)	$417	$574

Cost-effectiveness evaluation

Performance per price, higher is better.

Xeon Silver 4208 has 565% better value for money than EPYC 7251.

Detailed specifications

Xeon Silver 4208 and EPYC 7251 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	8 (Octa-Core)	8 (Octa-Core)
Threads	16	16
Base clock speed	2.1 GHz	2.1 GHz
Boost clock speed	3.2 GHz	2.9 GHz
Multiplier	21	21
L1 cache	512 KB	96K (per core)
L2 cache	8 MB	512K (per core)
L3 cache	11 MB	32 MB (shared)
Chip lithography	14 nm	14 nm
Die size	no data	192 mm2
Maximum core temperature	78 °C	no data
Number of transistors	no data	4,800 million
64 bit support	+	+
Windows 11 compatibility	+	-
Unlocked multiplier	-	+

Compatibility

Information on Xeon Silver 4208 and EPYC 7251 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	2 (Multiprocessor)	2 (Multiprocessor)
Socket	FCLGA3647	TR4
Power consumption (TDP)	85 Watt	120 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon Silver 4208 and EPYC 7251. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512	no data
AES-NI	+	+
AVX	+	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	no data
Speed Shift	+	no data
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	no data
TSX	+	-
Turbo Boost Max 3.0	-	no data
Deep Learning Boost	+	-

Security technologies

Xeon Silver 4208 and EPYC 7251 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon Silver 4208 and EPYC 7251 are enumerated here.

AMD-V	-	+
VT-d	+	no data
VT-x	+	no data
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon Silver 4208 and EPYC 7251. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2400	DDR4 Eight-channel
Maximum memory size	1 TB	2 TiB
Max memory channels	6	8
Maximum memory bandwidth	115.212 GB/s	153.652 GB/s
ECC memory support	+	+

Peripherals

Specifications and connection of peripherals supported by Xeon Silver 4208 and EPYC 7251.

PCIe version	3.0	3.0
PCI Express lanes	48	128

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

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Pros & cons summary

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Performance score	7.08	9.40
Recency	2 April 2019	29 June 2017
Power consumption (TDP)	85 Watt	120 Watt

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Should you still have questions on choice between Xeon Silver 4208 and EPYC 7251, ask them in Comments section, and we shall answer.

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