Xeon Platinum 8558 vs Silver 4509Y

Primary details

Comparing Xeon Silver 4509Y and Xeon Platinum 8558 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	Sapphire Rapids (2023−2024)	Emerald Rapids (2023)
Release date	14 December 2023 (less than a year ago)	14 December 2023 (less than a year ago)
Launch price (MSRP)	$563	$4,650

Detailed specifications

Xeon Silver 4509Y and Xeon Platinum 8558 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	8 (Octa-Core)	48 (Octatetraconta-Core)
Threads	16	96
Base clock speed	2.6 GHz	2.1 GHz
Boost clock speed	4.1 GHz	4 GHz
L1 cache	80 KB (per core)	80 KB (per core)
L2 cache	2 MB (per core)	2 MB (per core)
L3 cache	22.5 MB (shared)	260 MB (shared)
Chip lithography	Intel 7 nm	Intel 7 nm
Die size	no data	2x 763 mm2
Maximum case temperature (TCase)	84 °C	78 °C
64 bit support	+	+

Compatibility

Information on Xeon Silver 4509Y and Xeon Platinum 8558 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	2	2
Socket	FCLGA4677	FCLGA4677
Power consumption (TDP)	125 Watt	330 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon Silver 4509Y and Xeon Platinum 8558. 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	+	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	+	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	+	+
Deep Learning Boost	+	+

Security technologies

Xeon Silver 4509Y and Xeon Platinum 8558 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 Silver 4509Y and Xeon Platinum 8558 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon Silver 4509Y and Xeon Platinum 8558. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR5 @ 4400 MT/s (1 DPC &2DPC)	DDR5 @ 5200 MT/s (1 DPC)
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

N/A

N/A

Peripherals

Specifications and connection of peripherals supported by Xeon Silver 4509Y and Xeon Platinum 8558.

PCIe version	5	5.0
PCI Express lanes	80	80

Pros & cons summary

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Physical cores	8	48
Threads	16	96
Power consumption (TDP)	125 Watt	330 Watt

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Should you still have questions on choice between Xeon Silver 4509Y and Xeon Platinum 8558, ask them in Comments section, and we shall answer.

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