Xeon Platinum 9221 vs Silver 4208

Primary details

Comparing Xeon Silver 4208 and Xeon Platinum 9221 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1003	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	18.08	no data
Market segment	Server	Server
Series	Intel Xeon Silver	Intel Xeon Platinum
Power efficiency	7.86	no data
Architecture codename	Cascade Lake (2019−2020)	Cascade Lake-AP (2019)
Release date	2 April 2019 (5 years ago)	2 April 2019 (5 years ago)
Launch price (MSRP)	$417	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon Silver 4208 and Xeon Platinum 9221 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)	32 (Dotriaconta-Core)
Threads	16	64
Base clock speed	2.1 GHz	2.3 GHz
Boost clock speed	3.2 GHz	3.7 GHz
Bus type	no data	DMI 3.0
Bus rate	no data	4 × 8 GT/s
Multiplier	21	21
L1 cache	512 KB	64K (per core)
L2 cache	8 MB	1 MB (per core)
L3 cache	11 MB	71.5 MB (shared)
Chip lithography	14 nm	14 nm
Maximum core temperature	78 °C	no data
Number of transistors	no data	8,000 million
64 bit support	+	+
Windows 11 compatibility	+	+

Compatibility

Information on Xeon Silver 4208 and Xeon Platinum 9221 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)	8
Socket	FCLGA3647	Intel BGA5903
Power consumption (TDP)	85 Watt	250 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon Silver 4208 and Xeon Platinum 9221. 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	Intel® AVX-512
AES-NI	+	+
AVX	+	+
vPro	+	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	+	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	+	+
Turbo Boost Max 3.0	-	no data
Deep Learning Boost	+	-

Security technologies

Xeon Silver 4208 and Xeon Platinum 9221 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon Silver 4208 and Xeon Platinum 9221 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon Silver 4208 and Xeon Platinum 9221. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2400	DDR4-2933
Maximum memory size	1 TB	2 TiB
Max memory channels	6	12
Maximum memory bandwidth	115.212 GB/s	281.6 GB/s
ECC memory support	+	+

Peripherals

Specifications and connection of peripherals supported by Xeon Silver 4208 and Xeon Platinum 9221.

PCIe version	3.0	3.0
PCI Express lanes	48	no data

Pros & cons summary

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Physical cores	8	32
Threads	16	64
Power consumption (TDP)	85 Watt	250 Watt

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Should you still have questions on choice between Xeon Silver 4208 and Xeon Platinum 9221, ask them in Comments section, and we shall answer.

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