i7-1255U vs A9-9400 SoC

VS
Core i7-1065G7 Core i7-1165G7 Core i7-1185G7 Core i7-1250U Core i7-1255U Core i7-1260P Core i7-1260U Core i7-1265U Core i7-1270P Core i7-1280P Core i7-1355U Core i7-1360P

Contents

A9-9400 SoC A9-9400 SoC
i7-1255U i7-1255U

Primary details

Comparing A9-9400 SoC and Core i7-1255U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the rankingnot rated877
Place by popularitynot in top-10037
Market segmentDesktop processorLaptop
Seriesno dataIntel Alder Lake-M
Power efficiencyno data53.98
Architecture codenameStoney Ridge (2016−2019)Alder Lake-U (2022)
Release date31 May 2016 (8 years ago)23 February 2022 (2 years ago)

Detailed specifications

A9-9400 SoC and Core i7-1255U 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 cores2 (Dual-core)10 (Deca-Core)
Threads212
Base clock speed2.4 GHz1.7 GHz
Boost clock speed3.2 GHz4.7 GHz
L1 cache160 KB80K (per core)
L2 cache1 MB (per core)1.25 MB (per core)
L3 cache0 KB12 MB (shared)
Chip lithography28 nmIntel 7 nm
Die size125 mm2no data
Maximum core temperatureno data100 °C
Maximum case temperature (TCase)74 °Cno data
Number of transistors1,200 millionno data
64 bit support++
Windows 11 compatibility-+

Compatibility

Information on A9-9400 SoC and Core i7-1255U 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 configuration11
SocketFT4FCBGA1744
Power consumption (TDP)10 Watt15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by A9-9400 SoC and Core i7-1255U. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI++
FMA++
AVX++
Enhanced SpeedStep (EIST)no data+
Speed Shiftno data+
Hyper-Threading Technologyno data+
TSX-+
Thermal Monitoring-+
Flex Memory Accessno data+
Deep Learning Boost-+

Security technologies

A9-9400 SoC and Core i7-1255U technologies aimed at improving security, for example, by protecting against hacks.

TXTno data+
EDBno data+
Secure Keyno data+
OS Guardno data+

Virtualization technologies

Virtual machine speed-up technologies supported by A9-9400 SoC and Core i7-1255U are enumerated here.

AMD-V+-
VT-dno data+
VT-xno data+
EPTno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by A9-9400 SoC and Core i7-1255U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4DDR4, DDR5
Maximum memory sizeno data64 GB
Max memory channelsno data2

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardRadeon R5 3CUIntel® Iris® Xe Graphics eligible
Quick Sync Video-+
Graphics max frequencyno data1.25 GHz
Execution Unitsno data96

Graphics interfaces

Available interfaces and connections of A9-9400 SoC and Core i7-1255U integrated GPUs.

Number of displays supportedno data4

Graphics image quality

Maximum display resolutions supported by A9-9400 SoC and Core i7-1255U integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4no data4096 x 2304 @ 60Hz
Max resolution over eDPno data4096 x 2304 @ 120Hz
Max resolution over DisplayPortno data7680 x 4320 @ 60Hz

Graphics API support

APIs supported by A9-9400 SoC and Core i7-1255U integrated GPUs, sometimes API versions are included.

DirectXno data12.1
OpenGLno data4.6

Peripherals

Specifications and connection of peripherals supported by A9-9400 SoC and Core i7-1255U.

PCIe version3.04.0
PCI Express lanes820

Pros & cons summary

Recency 31 May 2016 23 February 2022
Physical cores 2 10
Threads 2 12
Power consumption (TDP) 10 Watt 15 Watt

A9-9400 SoC has 50% lower power consumption.

i7-1255U, on the other hand, has an age advantage of 5 years, and 400% more physical cores and 500% more threads.

We couldn't decide between A9-9400 SoC and Core i7-1255U. We've got no test results to judge.

Note that A9-9400 SoC is a desktop processor while Core i7-1255U is a notebook one.

Should you still have questions on choice between A9-9400 SoC and Core i7-1255U, 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.

AMD A9-9400 SoC
A9-9400 SoC
Intel Core i7-1255U
Core i7-1255U
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Community ratings

Here you can see how users rate the processors, as well as rate them yourself.

3.3 77 votes

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3.7 788 votes

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Questions & comments

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