Xeon Gold 6423N vs Platinum 8351N

Primary details

Comparing Xeon Platinum 8351N and Xeon Gold 6423N processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	95
Place by popularity	not in top-100	not in top-100
Market segment	Server	Server
Power efficiency	no data	17.55
Architecture codename	Ice Lake-SP (2021)	no data
Release date	6 April 2021 (3 years ago)	1 July 2023 (1 year ago)

Detailed specifications

Xeon Platinum 8351N and Xeon Gold 6423N 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	36	28 (Octacosa-Core)
Threads	72	56
Base clock speed	2.4 GHz	2 GHz
Boost clock speed	3.5 GHz	3.6 GHz
L1 cache	64K (per core)	no data
L2 cache	1 MB (per core)	no data
L3 cache	54 MB (shared)	52.5 MB
Chip lithography	10 nm	Intel 7 nm
Maximum core temperature	no data	85 °C
Maximum case temperature (TCase)	76 °C	no data
64 bit support	+	-
Windows 11 compatibility	+	no data

Compatibility

Information on Xeon Platinum 8351N and Xeon Gold 6423N 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	1	no data
Socket	FCLGA4189	FCLGA4677
Power consumption (TDP)	225 Watt	195 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon Platinum 8351N and Xeon Gold 6423N. 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® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512
AES-NI	+	+
AVX	+	-
vPro	+	no data
Enhanced SpeedStep (EIST)	+	no data
Speed Shift	+	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	+	+
Deep Learning Boost	+	+

Security technologies

Xeon Platinum 8351N and Xeon Gold 6423N technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon Platinum 8351N and Xeon Gold 6423N are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon Platinum 8351N and Xeon Gold 6423N. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2933	DDR5-4400
Maximum memory size	6 TB	4 TB
Max memory channels	8	8
ECC memory support	+	+

Peripherals

Specifications and connection of peripherals supported by Xeon Platinum 8351N and Xeon Gold 6423N.

PCIe version	4.0	4
PCI Express lanes	64	64

Pros & cons summary

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Recency	6 April 2021	1 July 2023
Physical cores	36	28
Threads	72	56
Power consumption (TDP)	225 Watt	195 Watt

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Should you still have questions on choice between Xeon Platinum 8351N and Xeon Gold 6423N, ask them in Comments section, and we shall answer.

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