Ultra 7 255H vs Ultra 9 285K

Primary details

Comparing Core Ultra 9 285K and Core Ultra 7 255H processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	60	343
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	74.49	no data
Market segment	Desktop processor	Laptop
Power efficiency	32.31	14.93
Architecture codename	Arrow Lake-S (2024−2025)	no data
Release date	24 October 2024 (less than a year ago)	1 January 2025 (less than a year ago)
Launch price (MSRP)	$589	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core Ultra 9 285K and Core Ultra 7 255H 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)	16 (Hexadeca-Core)
Performance-cores	8	6
Efficient-cores	16	8
Low Power Efficient-cores	no data	2
Threads	24	16
Base clock speed	3.7 GHz	no data
Boost clock speed	5.6 GHz	5.1 GHz
Bus rate	250 MHz	no data
L1 cache	192 KB (per core)	no data
L2 cache	3 MB (per core)	no data
L3 cache	36 MB (shared)	24 MB
Chip lithography	3 nm	no data
Die size	243 mm2	no data
Number of transistors	17,800 million	no data
64 bit support	+	+
Unlocked multiplier	+	-

Compatibility

Information on Core Ultra 9 285K and Core Ultra 7 255H 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	FCLGA1851	FCBGA2049
Power consumption (TDP)	125 Watt	115 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core Ultra 9 285K and Core Ultra 7 255H. 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)	+	no data
Speed Shift	+	+
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	no data	-
Idle States	+	no data
Thermal Monitoring	+	+
SIPP	+	-
Turbo Boost Max 3.0	+	+
Deep Learning Boost	+	+
Supported AI Software Frameworks	OpenVINO™, WindowsML, DirectML, ONNX RT, WebNN	OpenVINO™, WindowsML, DirectML, ONNX RT, WebNN

Security technologies

Core Ultra 9 285K and Core Ultra 7 255H 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 9 285K and Core Ultra 7 255H are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core Ultra 9 285K and Core Ultra 7 255H. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR5-6400	DDR5-6400
Maximum memory size	192 GB	128 GB
Max memory channels	2	2
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® Graphics	Intel® Arc™ 140T GPU
Quick Sync Video	+	+
Graphics max frequency	2 GHz	2.25 GHz

Graphics interfaces

Available interfaces and connections of Core Ultra 9 285K and Core Ultra 7 255H integrated GPUs.

Number of displays supported

4

4

Graphics image quality

Maximum display resolutions supported by Core Ultra 9 285K and Core Ultra 7 255H integrated GPUs, including resolutions over different interfaces.

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

Graphics API support

APIs supported by Core Ultra 9 285K and Core Ultra 7 255H integrated GPUs, sometimes API versions are included.

DirectX	12	12.2
OpenGL	4.5	4.6

Peripherals

Specifications and connection of peripherals supported by Core Ultra 9 285K and Core Ultra 7 255H.

PCIe version	5.0 and 4.0	no data
PCI Express lanes	20	28
PCI support	no data	5.0 and 4.0

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

---

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.

---

Pros & cons summary

---

Performance score	42.38	18.02
Recency	24 October 2024	1 January 2025
Physical cores	24	16
Threads	24	16
Power consumption (TDP)	125 Watt	115 Watt

---

Should you still have questions on choice between Core Ultra 9 285K and Core Ultra 7 255H, 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.

---