Xeon Platinum 8256 vs Platinum 9221

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Primary details

Comparing Xeon Platinum 9221 and Xeon Platinum 8256 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the rankingnot rated741
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data1.68
Market segmentServerServer
SeriesIntel Xeon PlatinumIntel Xeon Platinum
Power efficiencyno data9.53
Architecture codenameCascade Lake-AP (2019)Cascade Lake-SP (2018)
Release date2 April 2019 (5 years ago)11 December 2018 (6 years ago)
Launch price (MSRP)no data$7,007

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Xeon Platinum 9221 and Xeon Platinum 8256 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 cores32 (Dotriaconta-Core)4 (Quad-Core)
Threads648
Base clock speed2.3 GHz3.8 GHz
Boost clock speed3.7 GHz3.9 GHz
Bus typeDMI 3.0no data
Bus rate4 × 8 GT/sno data
Multiplier2138
L1 cache64K (per core)64 KB (per core)
L2 cache1 MB (per core)1 MB (per core)
L3 cache71.5 MB (shared)16.5 MB (shared)
Chip lithography14 nm14 nm
Maximum core temperatureno data72 °C
Number of transistors8,000 million8,000 million
64 bit support++
Windows 11 compatibility++

Compatibility

Information on Xeon Platinum 9221 and Xeon Platinum 8256 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 configuration88 (Multiprocessor)
SocketIntel BGA5903FCLGA3647
Power consumption (TDP)250 Watt105 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon Platinum 9221 and Xeon Platinum 8256. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® AVX-512Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512
AES-NI++
AVX++
vPro++
Enhanced SpeedStep (EIST)++
Speed Shift++
Turbo Boost Technology2.02.0
Hyper-Threading Technology++
TSX++
Turbo Boost Max 3.0no data-
Deep Learning Boost-+

Security technologies

Xeon Platinum 9221 and Xeon Platinum 8256 technologies aimed at improving security, for example, by protecting against hacks.

TXT++
EDBno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon Platinum 9221 and Xeon Platinum 8256 are enumerated here.

VT-d++
VT-x++
EPTno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon Platinum 9221 and Xeon Platinum 8256. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4-2933DDR4-2933
Maximum memory size2 TiB1 TB
Max memory channels126
Maximum memory bandwidth281.6 GB/s140.8 GB/s
ECC memory support++

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataN/A

Peripherals

Specifications and connection of peripherals supported by Xeon Platinum 9221 and Xeon Platinum 8256.

PCIe version3.03.0
PCI Express lanesno data48

Pros & cons summary


Recency 2 April 2019 11 December 2018
Physical cores 32 4
Threads 64 8
Power consumption (TDP) 250 Watt 105 Watt

Xeon Platinum 9221 has an age advantage of 3 months, and 700% more physical cores and 700% more threads.

Xeon Platinum 8256, on the other hand, has 138.1% lower power consumption.

We couldn't decide between Xeon Platinum 9221 and Xeon Platinum 8256. We've got no test results to judge.


Should you still have questions on choice between Xeon Platinum 9221 and Xeon Platinum 8256, ask them in Comments section, and we shall answer.

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Intel Xeon Platinum 9221
Xeon Platinum 9221
Intel Xeon Platinum 8256
Xeon Platinum 8256

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Community ratings

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3.4 42 votes

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2.7 6 votes

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