A6-7400K vs Ultra 7 155H

Primary details

Comparing Core Ultra 7 155H and A6-7400K processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	425	2441
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Desktop processor
Series	Intel Meteor Lake-H	no data
Power efficiency	53.37	1.50
Architecture codename	Meteor Lake-H (2023)	Kaveri (2014−2015)
Release date	14 December 2023 (less than a year ago)	31 July 2014 (10 years ago)
Launch price (MSRP)	$503	no data

Detailed specifications

Core Ultra 7 155H and A6-7400K 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)	2 (Dual-core)
Threads	22	2
Base clock speed	3.8 GHz	3.5 GHz
Boost clock speed	4.8 GHz	3.9 GHz
L1 cache	112 KB (per core)	128 KB
L2 cache	2 MB (per core)	1024 KB
L3 cache	24 MB (shared)	no data
Chip lithography	Intel 4 nm	28 nm
Die size	no data	245 mm2
Maximum core temperature	110 °C	70 °C
Maximum case temperature (TCase)	no data	72 °C
Number of transistors	no data	2,411 million
64 bit support	+	+
Unlocked multiplier	-	+

Compatibility

Information on Core Ultra 7 155H and A6-7400K 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	FM2+
Power consumption (TDP)	28 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core Ultra 7 155H and A6-7400K. 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	+	+
FMA	-	+
AVX	+	+
FRTC	-	+
FreeSync	-	+
TrueAudio	-	+
PowerNow	-	+
PowerGating	-	+
Out-of-band client management	-	+
VirusProtect	-	+
HSA	-	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	no data
Speed Shift	+	no data
Hyper-Threading Technology	+	no data
TSX	+	-
Thermal Monitoring	+	-
Flex Memory Access	+	no data
Turbo Boost Max 3.0	+	no data
Deep Learning Boost	+	-
Supported AI Software Frameworks	OpenVINO™, WindowsML, ONNX RT	-

Security technologies

Core Ultra 7 155H and A6-7400K 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 7 155H and A6-7400K are enumerated here.

AMD-V	-	+
VT-d	+	no data
VT-x	+	no data
EPT	+	no data
IOMMU 2.0	-	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core Ultra 7 155H and A6-7400K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR5	DDR3-1866
Maximum memory size	96 GB	no data
Max memory channels	2	2

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® Arc™ graphics	AMD Radeon R5 Graphics
iGPU core count	no data	4
Number of pipelines	no data	256
Quick Sync Video	+	-
Enduro	-	+
Switchable graphics	-	+
UVD	-	+
VCE	-	+
Graphics max frequency	2.25 GHz	no data

Graphics interfaces

Available interfaces and connections of Core Ultra 7 155H and A6-7400K integrated GPUs.

Number of displays supported	4	no data
DisplayPort	-	+
HDMI	-	+

Graphics image quality

Maximum display resolutions supported by Core Ultra 7 155H and A6-7400K 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)	no data
Max resolution over eDP	3840x2400 @ 120Hz	no data
Max resolution over DisplayPort	7680 x 4320 @ 60Hz	no data

Graphics API support

APIs supported by Core Ultra 7 155H and A6-7400K integrated GPUs, sometimes API versions are included.

DirectX	12.2	DirectX® 12
OpenGL	4.6	no data
Vulkan	-	+

Peripherals

Specifications and connection of peripherals supported by Core Ultra 7 155H and A6-7400K.

PCIe version	5.0	3.0
PCI Express lanes	8	16
PCI support	5.0 and 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	15.79	1.03
Recency	14 December 2023	31 July 2014
Physical cores	16	2
Threads	22	2
Power consumption (TDP)	28 Watt	65 Watt

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Should you still have questions on choice between Core Ultra 7 155H and A6-7400K, ask them in Comments section, and we shall answer.

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