Ultra 9 285K vs Xeon W-2123

Primary details

Comparing Xeon W-2123 and Core Ultra 9 285K processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1168	49
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	8.52	70.90
Market segment	Server	Desktop processor
Series	Intel Xeon W	no data
Power efficiency	4.20	32.79
Architecture codename	Skylake (server) (2017−2018)	Arrow Lake-S (2024−2025)
Release date	29 August 2017 (7 years ago)	24 October 2024 (less than a year ago)
Launch price (MSRP)	$294	$589

Cost-effectiveness evaluation

Performance per price, higher is better.

Ultra 9 285K has 732% better value for money than Xeon W-2123.

Detailed specifications

Xeon W-2123 and Core Ultra 9 285K 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	4 (Quad-Core)	24 (Tetracosa-Core)
Threads	8	24
Base clock speed	3.6 GHz	3.7 GHz
Boost clock speed	3.9 GHz	5.7 GHz
Bus type	DMI 3.0	no data
Bus rate	4 × 8 GT/s	250 MHz
Multiplier	36	no data
L1 cache	64K (per core)	112 KB (per core)
L2 cache	1 MB (per core)	3 MB (per core)
L3 cache	8.25 MB (shared)	36 MB (shared)
Chip lithography	14 nm	3 nm
Die size	484 mm2	243 mm2
Maximum case temperature (TCase)	64 °C	no data
Number of transistors	no data	17,800 million
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	-	+

Compatibility

Information on Xeon W-2123 and Core Ultra 9 285K 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 (Uniprocessor)	1
Socket	FCLGA2066	1851
Power consumption (TDP)	120 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon W-2123 and Core Ultra 9 285K. 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	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	+	+
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	-	no data
Demand Based Switching	+	no data
PAE	46 Bit	no data
Turbo Boost Max 3.0	-	no data

Security technologies

Xeon W-2123 and Core Ultra 9 285K technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	no data
Secure Key	+	no data
MPX	+	-
Identity Protection	+	-
SGX	-	no data
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon W-2123 and Core Ultra 9 285K are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon W-2123 and Core Ultra 9 285K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-1600, DDR4-1866, DDR4-2133, DDR4-2400, DDR4-2666	DDR5 Depends on motherboard
Maximum memory size	512 GB	no data
Max memory channels	4	no data
Maximum memory bandwidth	85.33 GB/s	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

Arc Xe-LPG Graphics 64EU

Peripherals

Specifications and connection of peripherals supported by Xeon W-2123 and Core Ultra 9 285K.

PCIe version	3.0	5.0
PCI Express lanes	48	20

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

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Pros & cons summary

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Performance score	5.33	43.31
Recency	29 August 2017	24 October 2024
Physical cores	4	24
Threads	8	24
Chip lithography	14 nm	3 nm
Power consumption (TDP)	120 Watt	125 Watt

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Should you still have questions on choice between Xeon W-2123 and Core Ultra 9 285K, ask them in Comments section, and we shall answer.

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