EPYC 9255 vs Ultra 9 285K

Primary details

Comparing Core Ultra 9 285K and EPYC 9255 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	49	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	70.90	no data
Market segment	Desktop processor	Server
Power efficiency	32.79	no data
Architecture codename	Arrow Lake-S (2024−2025)	Turin (2024)
Release date	24 October 2024 (less than a year ago)	10 October 2024 (less than a year ago)
Launch price (MSRP)	$589	$2,495

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core Ultra 9 285K and EPYC 9255 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	24 (Tetracosa-Core)	24 (Tetracosa-Core)
Threads	24	48
Base clock speed	3.7 GHz	3.25 GHz
Boost clock speed	5.7 GHz	4.8 GHz
Bus rate	250 MHz	no data
L1 cache	112 KB (per core)	80 KB (per core)
L2 cache	3 MB (per core)	1 MB (per core)
L3 cache	36 MB (shared)	128 MB (shared)
Chip lithography	3 nm	4 nm
Die size	243 mm2	4x 70.6 mm2
Number of transistors	17,800 million	33,260 million
64 bit support	+	+
Unlocked multiplier	+	-

Compatibility

Information on Core Ultra 9 285K and EPYC 9255 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	2
Socket	1851	SP5
Power consumption (TDP)	125 Watt	200 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core Ultra 9 285K and EPYC 9255. You'll probably need this information if you require some particular technology.

AES-NI	+	+
AVX	+	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	no data
TSX	+	-
Precision Boost 2	no data	+

Security technologies

Core Ultra 9 285K and EPYC 9255 technologies aimed at improving security, for example, by protecting against hacks.

TXT

+

no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core Ultra 9 285K and EPYC 9255 are enumerated here.

AMD-V	-	+
VT-d	+	no data
VT-x	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core Ultra 9 285K and EPYC 9255. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR5 Depends on motherboard

DDR5

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

Arc Xe-LPG Graphics 64EU

N/A

Peripherals

Specifications and connection of peripherals supported by Core Ultra 9 285K and EPYC 9255.

PCIe version	5.0	5.0
PCI Express lanes	20	128

Pros & cons summary

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Threads	24	48
Chip lithography	3 nm	4 nm
Power consumption (TDP)	125 Watt	200 Watt

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