Ultra 9 285K vs Xeon Platinum 9221

Primary details

Comparing Xeon Platinum 9221 and Core Ultra 9 285K processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	55
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	69.32
Market segment	Server	Desktop processor
Series	Intel Xeon Platinum	no data
Power efficiency	no data	32.29
Architecture codename	Cascade Lake-AP (2019)	Arrow Lake-S (2024−2025)
Release date	2 April 2019 (5 years ago)	24 October 2024 (recently)
Launch price (MSRP)	no data	$589

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon Platinum 9221 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	32 (Dotriaconta-Core)	24 (Tetracosa-Core)
Threads	64	24
Base clock speed	2.3 GHz	3.7 GHz
Boost clock speed	3.7 GHz	5.7 GHz
Bus type	DMI 3.0	no data
Bus rate	4 × 8 GT/s	250 MHz
Multiplier	21	no data
L1 cache	2 MB	112 KB (per core)
L2 cache	32 MB	3 MB (per core)
L3 cache	71.5 MB (shared)	36 MB (shared)
Chip lithography	14 nm	3 nm
Die size	no data	243 mm2
Number of transistors	8,000 million	17,800 million
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	-	+

Compatibility

Information on Xeon Platinum 9221 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	8	1
Socket	Intel BGA5903	1851
Power consumption (TDP)	250 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon Platinum 9221 and Core Ultra 9 285K. You'll probably need this information if you require some particular technology.

Instruction set extensions	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	+	+

Security technologies

Xeon Platinum 9221 and Core Ultra 9 285K technologies aimed at improving security, for example, by protecting against hacks.

TXT

+

+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon Platinum 9221 and Core Ultra 9 285K are enumerated here.

VT-d	+	+
VT-x	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon Platinum 9221 and Core Ultra 9 285K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2933	DDR5 Depends on motherboard
Maximum memory size	2 TiB	no data
Max memory channels	12	no data
Maximum memory bandwidth	281.6 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 Platinum 9221 and Core Ultra 9 285K.

PCIe version	3.0	5.0
PCI Express lanes	no data	20

Pros & cons summary

---

Recency	2 April 2019	24 October 2024
Physical cores	32	24
Threads	64	24
Chip lithography	14 nm	3 nm
Power consumption (TDP)	250 Watt	125 Watt

---

Should you still have questions on choice between Xeon Platinum 9221 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.

---