Ultra 9 285T vs Xeon Platinum 8558P

Primary details

Comparing Xeon Platinum 8558P and Core Ultra 9 285T 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	Desktop processor
Architecture codename	Emerald Rapids (2023)	Arrow Lake-S (2024−2025)
Release date	14 December 2023 (less than a year ago)	January 2025
Launch price (MSRP)	$6,759	no data

Detailed specifications

Xeon Platinum 8558P and Core Ultra 9 285T 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	48 (Octatetraconta-Core)	24 (Tetracosa-Core)
Threads	96	24
Base clock speed	2.7 GHz	1.4 GHz
Boost clock speed	4 GHz	5.4 GHz
L1 cache	80 KB (per core)	112 KB (per core)
L2 cache	2 MB (per core)	3 MB (per core)
L3 cache	260 MB (shared)	36 MB (shared)
Chip lithography	Intel 7 nm	3 nm
Die size	2x 763 mm2	243 mm2
Maximum case temperature (TCase)	81 °C	no data
Number of transistors	no data	17,800 million
64 bit support	+	+

Compatibility

Information on Xeon Platinum 8558P and Core Ultra 9 285T 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	1
Socket	FCLGA4677	1851
Power consumption (TDP)	350 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon Platinum 8558P and Core Ultra 9 285T. 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	no data
AES-NI	+	+
AVX	+	+
vPro	+	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	+	no data
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	no data
TSX	+	+
Deep Learning Boost	+	-

Security technologies

Xeon Platinum 8558P and Core Ultra 9 285T technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon Platinum 8558P and Core Ultra 9 285T are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon Platinum 8558P and Core Ultra 9 285T. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR5 @ 5600 MT/s (1 DPC)	DDR5 Depends on motherboard
Maximum memory size	4 TB	no data
Max memory channels	8	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

N/A

Arc Xe2 Graphics 64EU

Peripherals

Specifications and connection of peripherals supported by Xeon Platinum 8558P and Core Ultra 9 285T.

PCIe version	5.0	5.0
PCI Express lanes	80	20

Pros & cons summary

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Physical cores	48	24
Threads	96	24
Power consumption (TDP)	350 Watt	35 Watt

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Should you still have questions on choice between Xeon Platinum 8558P and Core Ultra 9 285T, ask them in Comments section, and we shall answer.

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