Intel Xeon Platinum 8558U: specs and benchmarks

Summary

Intel started Xeon Platinum 8558U sales 1 October 2023. This is an Emerald Rapids architecture desktop processor primarily aimed at professional systems. It has 48 cores and 96 threads, and is based on Intel 7 manufacturing technology, with a maximum frequency of 4000 MHz and a locked multiplier.

Compatibility-wise, this is FCLGA4677 processor with a TDP of 300 Watt and a maximum temperature of 78 °C. It supports DDR5 @ 4800 MT/s (1 DPC) memory.

Primary details

Xeon Platinum 8558U processor market type (desktop or notebook), architecture, sales start time and pricing.

Place in performance ranking	not rated
Place by popularity	not in top-100
Market segment	Server
Architecture codename	Emerald Rapids
Release date	1 October 2023 (less than a year ago)

Detailed specifications

Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.

Physical cores	48 (Octatetraconta-Core)
Threads	96
Base clock speed	2 GHz	of 4.7 (FX-9590)
Boost clock speed	4 GHz	of 6.2 (Core i9-14900KS)
L1 cache	80 KB (per core)	of 7475.2 (Apple M2 Pro 10-Core)
L2 cache	2 MB (per core)	of 96 (Ryzen Threadripper PRO 7995WX)
L3 cache	260 MB (shared)	of 768 (EPYC 7373X)
Chip lithography	Intel 7 nm	of 3 (Apple M3 Max 16-Core)
Die size	2x 763 mm2
Maximum core temperature	78 °C	of 110 (Atom x7-E3950)
Maximum case temperature (TCase)	78 °C	of 105 (Core i7-5950HQ)
64 bit support	+
Unlocked multiplier	No

Compatibility

Information on Xeon Platinum 8558U compatibility with other computer components and devices: 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	of 8 (Opteron 842)
Socket	FCLGA4677
Power consumption (TDP)	300 Watt	of 400 (Xeon Platinum 9282)

Technologies and extensions

Technological capabilities and additional instructions supported by Xeon Platinum 8558U. 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
AES-NI	+
AVX	+
vPro	+
Enhanced SpeedStep (EIST)	+
Speed Shift	+
Turbo Boost Technology	2.0
Hyper-Threading Technology	+
TSX	+
Status	Launched

Security technologies

Processor technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Supported virtual machine optimization technologies. Some are specific to Intel only, some to AMD.

VT-d	+
VT-x	+
EPT	+

Memory specs

Types, maximum amount and channel number of RAM supported by Xeon Platinum 8558U's memory controller. Depending on the motherboard, higher memory frequency may be supported.

Supported memory types	DDR5 @ 4800 MT/s (1 DPC)
Maximum memory size	4 TB	of 786 (Xeon E5-2670 v3)
Max memory channels	8	of 12 (Xeon Platinum 9221)
ECC memory support	+

Graphics specifications

General parameters of a GPU integrated into Xeon Platinum 8558U.

Integrated graphics card

N/A

Peripherals

Specifications and connection types of supported peripherals.

PCIe version	5.0
PCI Express lanes	80	of 128 (EPYC 7551P)

Benchmark performance

Single-core and multi-core benchmark results of Xeon Platinum 8558U. Overall benchmark performance is measured in points in 0-100 range, higher is better.

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