Xeon Platinum 9221: specs and benchmarks

Summary

Intel started Xeon Platinum 9221 sales 2 April 2019. This is a Cascade Lake-AP architecture desktop processor primarily aimed at professional systems. It has 32 cores and 64 threads, and is based on 14 nm manufacturing technology, with a maximum frequency of 3700 MHz and a locked multiplier.

Compatibility-wise, this is Intel BGA5903 processor with a TDP of 250 Watt. It supports DDR4-2933 memory.

Primary details

Xeon Platinum 9221 processor market type (desktop or notebook), architecture, sales start time and pricing.

Place in the ranking	not rated
Place by popularity	not in top-100
Market segment	Server
Series	Intel Xeon Platinum
Architecture codename	Cascade Lake-AP (2019)
Release date	2 April 2019 (5 years ago)

Detailed specifications

Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.

Physical cores	32 (Dotriaconta-Core)
Threads	64
Base clock speed	2.3 GHz	of 4.7 GHz (Ryzen 9 7900X)
Boost clock speed	3.7 GHz	of 6.2 GHz (Core i9-14900KS)
Bus type	DMI 3.0
Bus rate	4 × 8 GT/s
Multiplier	21	of 42 (Core i7-7700K)
L1 cache	64K (per core)	of 80 KB (EPYC 9965)
L2 cache	1 MB (per core)	of 2 MB (Xeon 6980P)
L3 cache	71.5 MB (shared)	of 1152 MB (EPYC 9684X)
Chip lithography	14 nm	of 3 nm (Core Ultra 9 285K)
Number of transistors	8,000 million	of 135,240 million (EPYC 9684X)
64 bit support	+
Windows 11 compatibility	+

Compatibility

Information on Xeon Platinum 9221 compatibility with other computer components and devices: 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
Socket	Intel BGA5903
Power consumption (TDP)	250 Watt	of 3100 ‑ 4500 (Ryzen 7 7435H)

Technologies and extensions

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

Instruction set extensions	Intel® AVX-512
AES-NI	+
AVX	+
vPro	+
Enhanced SpeedStep (EIST)	+
Speed Shift	+
Turbo Boost Technology	2.0
Hyper-Threading Technology	+
TSX	+

Security technologies

Processor technologies aimed at improving security, for example, by protecting against hacks.

TXT

+

Virtualization technologies

Supported virtual machine optimization technologies. Some are specific to Intel only, some to AMD.

VT-d	+
VT-x	+

Memory specs

Types, maximum amount and channel number of RAM supported by Xeon Platinum 9221's memory controller. Depending on the motherboard, higher memory frequency may be supported.

Supported memory types	DDR4-2933
Maximum memory size	2 TiB	of 6 TiB (EPYC 9654)
Max memory channels	12
Maximum memory bandwidth	281.6 GB/s	of 460.8 GB/s (EPYC 9654)
ECC memory support	+

Peripherals

Specifications and connection types of supported peripherals.

PCIe version

3.0

of 5.0 (EPYC 9655P)

Benchmark performance

Single-core and multi-core benchmark results of Xeon Platinum 9221. Overall benchmark performance is measured in points in 0-100 range, higher is better.

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