Ultra 9 285K vs Xeon w5-2455X

Primary details

Comparing Xeon w5-2455X and Core Ultra 9 285K processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	208	58
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	62.29	70.27
Market segment	Server	Desktop processor
Power efficiency	11.27	31.40
Architecture codename	Sapphire Rapids (2023−2024)	Arrow Lake-S (2024−2025)
Release date	15 February 2023 (1 year ago)	24 October 2024 (recently)
Launch price (MSRP)	$1,039	$589

Cost-effectiveness evaluation

Performance per price, higher is better.

Ultra 9 285K has 13% better value for money than Xeon w5-2455X.

Detailed specifications

Xeon w5-2455X 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	12 (Dodeca-Core)	24 (Tetracosa-Core)
Threads	24	24
Base clock speed	3.2 GHz	3.7 GHz
Boost clock speed	4.6 GHz	5.7 GHz
Bus rate	no data	250 MHz
L1 cache	80 KB (per core)	112 KB (per core)
L2 cache	2 MB (per core)	3 MB (per core)
L3 cache	30 MB	36 MB (shared)
Chip lithography	Intel 7 nm	3 nm
Die size	no data	243 mm2
Maximum case temperature (TCase)	77 °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 w5-2455X 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	1
Socket	FCLGA4677	1851
Power consumption (TDP)	200 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon w5-2455X and Core Ultra 9 285K. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® AMX, Intel® SSE4.2, 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	+	+
Turbo Boost Max 3.0	+	no data
Deep Learning Boost	+	-

Security technologies

Xeon w5-2455X and Core Ultra 9 285K technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	no data
SGX	-	no data
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon w5-2455X 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 w5-2455X and Core Ultra 9 285K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR5-4800	DDR5 Depends on motherboard
Maximum memory size	2 TB	no data
Max memory channels	4	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

N/A

Arc Xe-2 Graphics 64EU

Peripherals

Specifications and connection of peripherals supported by Xeon w5-2455X and Core Ultra 9 285K.

PCIe version	5.0	5.0
PCI Express lanes	64	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.

---

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.

---

Pros & cons summary

---

Performance score	24.71	43.04
Recency	15 February 2023	24 October 2024
Physical cores	12	24
Power consumption (TDP)	200 Watt	125 Watt

---

Should you still have questions on choice between Xeon w5-2455X and Core Ultra 9 285K, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.

---