Xeon Silver 4509Y vs Gold 5420

Primary details

Comparing Xeon Gold 5420 and Xeon Silver 4509Y 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
Architecture codename	no data	Sapphire Rapids (2023−2024)
Release date	1 January 2023 (1 year ago)	14 December 2023 (less than a year ago)
Launch price (MSRP)	no data	$563

Detailed specifications

Xeon Gold 5420 and Xeon Silver 4509Y 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	28 (Octacosa-Core)	8 (Octa-Core)
Threads	56	16
Base clock speed	2 GHz	2.6 GHz
Boost clock speed	4.1 GHz	4.1 GHz
L1 cache	no data	80 KB (per core)
L2 cache	no data	2 MB (per core)
L3 cache	52.5 MB	22.5 MB (shared)
Chip lithography	Intel 7 nm	Intel 7 nm
Maximum core temperature	84 °C	no data
Maximum case temperature (TCase)	no data	84 °C
64 bit support	-	+

Compatibility

Information on Xeon Gold 5420 and Xeon Silver 4509Y 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	no data	2
Socket	FCLGA4677	FCLGA4677
Power consumption (TDP)	205 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon Gold 5420 and Xeon Silver 4509Y. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AMX, Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512	Intel® AMX, 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 Gold 5420 and Xeon Silver 4509Y technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
SGX	Yes with Intel® SPS	Yes with Intel® SPS
OS Guard	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon Gold 5420 and Xeon Silver 4509Y are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon Gold 5420 and Xeon Silver 4509Y. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR5-4400	DDR5 @ 4400 MT/s (1 DPC &2DPC)
Maximum memory size	4 TB	4 TB
Max memory channels	8	8
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 Gold 5420 and Xeon Silver 4509Y.

PCIe version	5	5
PCI Express lanes	80	80

Pros & cons summary

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Recency	1 January 2023	14 December 2023
Physical cores	28	8
Threads	56	16
Power consumption (TDP)	205 Watt	125 Watt

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Should you still have questions on choice between Xeon Gold 5420 and Xeon Silver 4509Y, ask them in Comments section, and we shall answer.

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