EPYC 9355P vs Xeon Platinum 9221

Primary details

Comparing Xeon Platinum 9221 and EPYC 9355P processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Server	Server
Series	Intel Xeon Platinum	no data
Architecture codename	Cascade Lake-AP (2019)	Turin (2024)
Release date	2 April 2019 (5 years ago)	10 October 2024 (less than a year ago)
Launch price (MSRP)	no data	$2,998

Detailed specifications

Xeon Platinum 9221 and EPYC 9355P 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	32 (Dotriaconta-Core)	32 (Dotriaconta-Core)
Threads	64	64
Base clock speed	2.3 GHz	3.55 GHz
Boost clock speed	3.7 GHz	4.4 GHz
Bus type	DMI 3.0	no data
Bus rate	4 × 8 GT/s	no data
Multiplier	21	no data
L1 cache	64K (per core)	80 KB (per core)
L2 cache	1 MB (per core)	1 MB (per core)
L3 cache	71.5 MB (shared)	256 MB (shared)
Chip lithography	14 nm	4 nm
Die size	no data	8x 70.6 mm2
Number of transistors	8,000 million	66,520 million
64 bit support	+	+
Windows 11 compatibility	+	no data

Compatibility

Information on Xeon Platinum 9221 and EPYC 9355P 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	8	1
Socket	Intel BGA5903	SP5
Power consumption (TDP)	250 Watt	280 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon Platinum 9221 and EPYC 9355P. You'll probably need this information if you require some particular technology.

Instruction set extensions	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	+	-
Precision Boost 2	no data	+

Security technologies

Xeon Platinum 9221 and EPYC 9355P technologies aimed at improving security, for example, by protecting against hacks.

TXT

+

no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon Platinum 9221 and EPYC 9355P are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon Platinum 9221 and EPYC 9355P. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2933	DDR5
Maximum memory size	2 TiB	no data
Max memory channels	12	no data
Maximum memory bandwidth	281.6 GB/s	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

N/A

Peripherals

Specifications and connection of peripherals supported by Xeon Platinum 9221 and EPYC 9355P.

PCIe version	3.0	5.0
PCI Express lanes	no data	128

Pros & cons summary

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Recency	2 April 2019	10 October 2024
Chip lithography	14 nm	4 nm
Power consumption (TDP)	250 Watt	280 Watt

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Should you still have questions on choice between Xeon Platinum 9221 and EPYC 9355P, ask them in Comments section, and we shall answer.

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