Ultra 9 285K vs i9-12900K

Primary details

Comparing Core i9-12900K and Core Ultra 9 285K processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	185	52
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	35.67	70.59
Market segment	Desktop processor	Desktop processor
Series	Intel Core i9	no data
Power efficiency	19.77	32.65
Architecture codename	Alder Lake, Golden Cove, Gracemont (2021)	Arrow Lake-S (2024−2025)
Release date	27 October 2021 (3 years ago)	24 October 2024 (recently)
Launch price (MSRP)	$589	$589

Cost-effectiveness evaluation

Performance per price, higher is better.

Ultra 9 285K has 98% better value for money than i9-12900K.

Detailed specifications

Core i9-12900K 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	16 (Hexadeca-Core)	24 (Tetracosa-Core)
Threads	24	24
Base clock speed	3.2 GHz	3.7 GHz
Boost clock speed	5.2 GHz	5.7 GHz
Bus type	DMI 4.0	no data
Bus rate	8 × 16 GT/s	250 MHz
Multiplier	32	no data
L1 cache	768 KB	112 KB (per core)
L2 cache	4 MB	3 MB (per core)
L3 cache	6 MB	36 MB (shared)
Chip lithography	10 nm	3 nm
Die size	215.25 mm2"	243 mm2
Maximum core temperature	100 °C	no data
Maximum case temperature (TCase)	72 °C	no data
Number of transistors	no data	17,800 million
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	+	+

Compatibility

Information on Core i9-12900K 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	FCLGA1700	1851
Power consumption (TDP)	125 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-12900K and Core Ultra 9 285K. 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	+	+
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	+	-
SIPP	+	-
Turbo Boost Max 3.0	+	no data
Deep Learning Boost	+	-

Security technologies

Core i9-12900K and Core Ultra 9 285K technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-12900K 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 Core i9-12900K and Core Ultra 9 285K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4, DDR5	DDR5 Depends on motherboard
Maximum memory size	128 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	76.805 GB/s	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel UHD Graphics 770	Arc Xe-LPG Graphics 64EU
Quick Sync Video	+	-
Clear Video HD	+	no data
Graphics max frequency	1.55 GHz	no data
Execution Units	32	no data

Graphics interfaces

Available interfaces and connections of Core i9-12900K and Core Ultra 9 285K integrated GPUs.

Number of displays supported

4

no data

Graphics image quality

Maximum display resolutions supported by Core i9-12900K and Core Ultra 9 285K integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	4096 x 2160 @ 60Hz	no data
Max resolution over eDP	5120 x 3200 @ 120Hz	no data
Max resolution over DisplayPort	7680 x 4320 @ 60Hz	no data

Graphics API support

APIs supported by Core i9-12900K and Core Ultra 9 285K 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 i9-12900K and Core Ultra 9 285K.

PCIe version	5.0 and 4.0	5.0
PCI Express lanes	20	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	26.11	43.12
Recency	27 October 2021	24 October 2024
Physical cores	16	24
Chip lithography	10 nm	3 nm

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Should you still have questions on choice between Core i9-12900K and Core Ultra 9 285K, ask them in Comments section, and we shall answer.

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