Ultra X9 388H vs Ultra 9 285H

Primary details

Comparing processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	353	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	27.69	no data
Market segment	Laptop	Laptop
Power efficiency	18.47	no data
Designer	Intel	Intel
Manufacturer	TSMC	no data
Architecture codename	Arrow Lake-H (2025)	Panther Lake
Release date	13 January 2025 (less than a year ago)	no data
Launch price (MSRP)	$651	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Performance to price scatter graph

Detailed specifications

Core Ultra 9 285H and Core Ultra X9 388H 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)	16 (Hexadeca-Core)
Performance-cores	6	4
Efficient-cores	8	8
Low Power Efficient-cores	2	4
Threads	16	16
Base clock speed	2.9 GHz	no data
Boost clock speed	5.4 GHz	5.1 GHz
L1 cache	192 KB (per core)	no data
L2 cache	3 MB (per core)	no data
L3 cache	24 MB (shared)	18 MB Intel® Smart Cache
Chip lithography	3 nm	no data
Maximum core temperature	110 °C	no data
64 bit support	+	+

Compatibility

Information on Core Ultra 9 285H and Core Ultra X9 388H 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	no data
Socket	FCBGA2049	FCBGA2540
Power consumption (TDP)	45 Watt	25 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core Ultra 9 285H and Core Ultra X9 388H. 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	+	no data
Enhanced SpeedStep (EIST)	+	+
Speed Shift	+	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	-	no data
Thermal Monitoring	+	+
SIPP	+	+
Turbo Boost Max 3.0	+	+
Deep Learning Boost	+	+
Supported AI Software Frameworks	OpenVINO™, WindowsML, ONNX RT, DirectML, WebNN	OpenVINO™, WindowsML, DirectML, ONNX RT, WebNN

Security technologies

Core Ultra 9 285H and Core Ultra X9 388H technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
OS Guard	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core Ultra 9 285H and Core Ultra X9 388H are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core Ultra 9 285H and Core Ultra X9 388H. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR5-6400	LPDDR5X-9600
Maximum memory size	128 GB	96 GB
Max memory channels	2	2

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® Arc™ 140T GPU	Intel® Arc™ B390 GPU
Quick Sync Video	+	+
Graphics max frequency	2.35 GHz	2.5 GHz

Graphics interfaces

Available interfaces and connections of Core Ultra 9 285H and Core Ultra X9 388H integrated GPUs.

Number of displays supported

4

4

Graphics image quality

Maximum display resolutions supported by Core Ultra 9 285H and Core Ultra X9 388H 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 (HDMI 2.1 FRL)	no data
Max resolution over eDP	3840 x 2400 @ 120Hz	3840 x 2400 @ 120Hz
Max resolution over DisplayPort	7680 x 4320 @ 60Hz	7680 x 4320 @ 60Hz

Graphics API support

APIs supported by Core Ultra 9 285H and Core Ultra X9 388H integrated GPUs, sometimes API versions are included.

DirectX	12.2	DirectX 12 Ultimate
OpenGL	4.6	4.6

Peripherals

Specifications and connection of peripherals supported by Core Ultra 9 285H and Core Ultra X9 388H.

PCIe version	5.0 and 4.0	5.0 and 4.0
PCI Express lanes	24	12

Pros & cons summary

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Power consumption (TDP)

45 Watt

25 Watt

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