EPYC 9555 vs Ultra 9 285K

Primary details

Comparing Core Ultra 9 285K and EPYC 9555 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	54	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	74.20	no data
Market segment	Desktop processor	Server
Power efficiency	32.51	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	$9,826

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core Ultra 9 285K and EPYC 9555 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)	64 (Tetrahexaconta-Core)
Performance-cores	8	no data
Efficient-cores	16	no data
Threads	24	128
Base clock speed	3.7 GHz	3.2 GHz
Boost clock speed	5.6 GHz	4.4 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)	256 MB (shared)
Chip lithography	3 nm	4 nm
Die size	243 mm2	8x 70.6 mm2
Number of transistors	17,800 million	66,520 million
64 bit support	+	+
Unlocked multiplier	+	-

Compatibility

Information on Core Ultra 9 285K and EPYC 9555 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	FCLGA1851	SP5
Power consumption (TDP)	125 Watt	360 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core Ultra 9 285K and EPYC 9555. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	no data
AES-NI	+	+
AVX	+	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	no data
Speed Shift	+	no data
Turbo Boost Technology	2.0	no data
TSX	+	-
Idle States	+	no data
Thermal Monitoring	+	-
SIPP	+	-
Turbo Boost Max 3.0	+	no data
Precision Boost 2	no data	+
Deep Learning Boost	+	-
Supported AI Software Frameworks	OpenVINO™, WindowsML, DirectML, ONNX RT, WebNN	-

Security technologies

Core Ultra 9 285K and EPYC 9555 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	no data
Secure Key	+	no data
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core Ultra 9 285K and EPYC 9555 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core Ultra 9 285K and EPYC 9555. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR5-6400	DDR5
Maximum memory size	192 GB	no data
Max memory channels	2	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® Graphics	N/A
Quick Sync Video	+	-
Graphics max frequency	2 GHz	no data

Graphics interfaces

Available interfaces and connections of Core Ultra 9 285K and EPYC 9555 integrated GPUs.

Number of displays supported

4

no data

Graphics image quality

Maximum display resolutions supported by Core Ultra 9 285K and EPYC 9555 integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	4K @ 60Hz (HDMI 2.1 TMDS) 8K @ 60Hz (HDMI2.1 FRL)	no data
Max resolution over eDP	4K @ 60Hz	no data
Max resolution over DisplayPort	8K @ 60Hz	no data

Graphics API support

APIs supported by Core Ultra 9 285K and EPYC 9555 integrated GPUs, sometimes API versions are included.

DirectX	12	no data
OpenGL	4.5	no data

Peripherals

Specifications and connection of peripherals supported by Core Ultra 9 285K and EPYC 9555.

PCIe version	5.0 and 4.0	5.0
PCI Express lanes	20	128

Pros & cons summary

---

Physical cores	24	64
Threads	24	128
Chip lithography	3 nm	4 nm
Power consumption (TDP)	125 Watt	360 Watt

---

Should you still have questions on choice between Core Ultra 9 285K and EPYC 9555, 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.

---