Ultra 9 285K vs Ultra 5 125U

Primary details

Comparing Core Ultra 5 125U and Core Ultra 9 285K processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	716	54
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	74.26
Market segment	Laptop	Desktop processor
Series	Intel Meteor Lake-U	no data
Power efficiency	69.21	32.56
Architecture codename	Meteor Lake-P (2023)	Arrow Lake-S (2024−2025)
Release date	14 December 2023 (1 year ago)	24 October 2024 (less than a year ago)
Launch price (MSRP)	$363	$589

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core Ultra 5 125U 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)
Performance-cores	2	8
Efficient-cores	8	16
Low Power Efficient-cores	2	no data
Threads	14	24
Base clock speed	1.3 GHz	3.7 GHz
Boost clock speed	4.3 GHz	5.6 GHz
Bus rate	no data	250 MHz
L1 cache	112 KB (per core)	112 KB (per core)
L2 cache	2 MB (per core)	3 MB (per core)
L3 cache	12 MB (shared)	36 MB (shared)
Chip lithography	Intel 4 nm	3 nm
Die size	no data	243 mm2
Maximum core temperature	110 °C	no data
Number of transistors	no data	17,800 million
64 bit support	+	+
Unlocked multiplier	-	+

Compatibility

Information on Core Ultra 5 125U 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	FCBGA2049	FCLGA1851
Power consumption (TDP)	15 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core Ultra 5 125U 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	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	+	+
AVX	+	+
vPro	+	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	+	+
Turbo Boost Technology	no data	2.0
Hyper-Threading Technology	+	no data
TSX	+	+
Idle States	no data	+
Thermal Monitoring	+	+
Flex Memory Access	+	no data
SIPP	-	+
Turbo Boost Max 3.0	-	+
Deep Learning Boost	+	+
Supported AI Software Frameworks	OpenVINO™, WindowsML, ONNX RT	OpenVINO™, WindowsML, DirectML, ONNX RT, WebNN

Security technologies

Core Ultra 5 125U and Core Ultra 9 285K technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	+	+
OS Guard	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core Ultra 5 125U and Core Ultra 9 285K are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core Ultra 5 125U and Core Ultra 9 285K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR5	DDR5-6400
Maximum memory size	96 GB	192 GB
Max memory channels	2	2
ECC memory support	-	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® Graphics	Intel® Graphics
Quick Sync Video	+	+
Graphics max frequency	1.85 GHz	2 GHz

Graphics interfaces

Available interfaces and connections of Core Ultra 5 125U and Core Ultra 9 285K integrated GPUs.

Number of displays supported

4

4

Graphics image quality

Maximum display resolutions supported by Core Ultra 5 125U and Core Ultra 9 285K integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	4096 x 2304 @ 60Hz (HDMI 2.1 TMDS) 7680 x 4320 @ 60Hz (HDMI2.1 FRL)	4K @ 60Hz (HDMI 2.1 TMDS) 8K @ 60Hz (HDMI2.1 FRL)
Max resolution over eDP	3840x2400 @ 120Hz	4K @ 60Hz
Max resolution over DisplayPort	7680 x 4320 @ 60Hz	8K @ 60Hz

Graphics API support

APIs supported by Core Ultra 5 125U and Core Ultra 9 285K integrated GPUs, sometimes API versions are included.

DirectX	12.2	12
OpenGL	4.6	4.5

Peripherals

Specifications and connection of peripherals supported by Core Ultra 5 125U and Core Ultra 9 285K.

PCIe version	4.0	5.0 and 4.0
PCI Express lanes	12	20
PCI support	4.0	no data

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	10.97	43.01
Recency	14 December 2023	24 October 2024
Physical cores	12	24
Threads	14	24
Power consumption (TDP)	15 Watt	125 Watt

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Should you still have questions on choice between Core Ultra 5 125U and Core Ultra 9 285K, ask them in Comments section, and we shall answer.

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