Xeon Platinum 8558P vs Platinum 9221

Primary details

Comparing Xeon Platinum 9221 and Xeon Platinum 8558P 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)	Emerald Rapids (2023)
Release date	2 April 2019 (5 years ago)	14 December 2023 (1 year ago)
Launch price (MSRP)	no data	$6,759

Detailed specifications

Xeon Platinum 9221 and Xeon Platinum 8558P 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)	48 (Octatetraconta-Core)
Threads	64	96
Base clock speed	2.3 GHz	2.7 GHz
Boost clock speed	3.7 GHz	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)	2 MB (per core)
L3 cache	71.5 MB (shared)	260 MB (shared)
Chip lithography	14 nm	Intel 7 nm
Die size	no data	2x 763 mm2
Maximum case temperature (TCase)	no data	81 °C
Number of transistors	8,000 million	no data
64 bit support	+	+
Windows 11 compatibility	+	no data

Compatibility

Information on Xeon Platinum 9221 and Xeon Platinum 8558P 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	2
Socket	Intel BGA5903	FCLGA4677
Power consumption (TDP)	250 Watt	350 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon Platinum 9221 and Xeon Platinum 8558P. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX-512	Intel® AMX, Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512
AES-NI	+	+
AVX	+	+
vPro	+	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	+	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	+	+
Deep Learning Boost	-	+

Security technologies

Xeon Platinum 9221 and Xeon Platinum 8558P technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	no data	+
SGX	no data	Yes with Intel® SPS
OS Guard	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon Platinum 9221 and Xeon Platinum 8558P are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon Platinum 9221 and Xeon Platinum 8558P. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2933	DDR5 @ 5600 MT/s (1 DPC)
Maximum memory size	2 TiB	4 TB
Max memory channels	12	8
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 Xeon Platinum 8558P.

PCIe version	3.0	5.0
PCI Express lanes	no data	80

Pros & cons summary

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Recency	2 April 2019	14 December 2023
Physical cores	32	48
Threads	64	96
Power consumption (TDP)	250 Watt	350 Watt

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Should you still have questions on choice between Xeon Platinum 9221 and Xeon Platinum 8558P, ask them in Comments section, and we shall answer.

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