i7-1255U vs A9-9400 SoC
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 ranking | not rated | 896 |
| Place by popularity | not in top-100 | 74 |
| Market segment | Desktop processor | Laptop |
| Series | no data | Intel Alder Lake-M |
| Power efficiency | no data | 53.78 |
| Architecture codename | Stoney Ridge (2016−2019) | Alder Lake-U (2022) |
| Release date | 31 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 cores | 2 (Dual-core) | 10 (Deca-Core) |
| Threads | 2 | 12 |
| Base clock speed | 2.4 GHz | 1.7 GHz |
| Boost clock speed | 3.2 GHz | 4.7 GHz |
| L1 cache | 160 KB | 80K (per core) |
| L2 cache | 1 MB (per core) | 1.25 MB (per core) |
| L3 cache | 0 KB | 12 MB (shared) |
| Chip lithography | 28 nm | 10 nm |
| Die size | 125 mm2 | no data |
| Maximum core temperature | no data | 100 °C |
| Maximum case temperature (TCase) | 74 °C | no data |
| Number of transistors | 1,200 million | no 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 configuration | 1 | 1 |
| Socket | FT4 | Intel BGA 1744 |
| Power consumption (TDP) | 10 Watt | 15 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.
| AES-NI | + | + |
| FMA | + | + |
| AVX | + | + |
| Enhanced SpeedStep (EIST) | no data | + |
| TSX | - | + |
Security technologies
A9-9400 SoC and Core i7-1255U technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by A9-9400 SoC and Core i7-1255U are enumerated here.
| AMD-V | + | - |
| VT-d | no data | + |
| VT-x | no 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 types | DDR4 | DDR4, DDR5 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Radeon R5 3CU | Intel Iris Xe Graphics G7 96EUs ( - 1250 MHz) |
Peripherals
Specifications and connection of peripherals supported by A9-9400 SoC and Core i7-1255U.
| PCIe version | 3.0 | 4.0 |
| PCI Express lanes | 8 | 20 |
Pros & cons summary
| Recency | 31 May 2016 | 23 February 2022 |
| Physical cores | 2 | 10 |
| Threads | 2 | 12 |
| Chip lithography | 28 nm | 10 nm |
| 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, 400% more physical cores and 500% more threads, and a 180% more advanced lithography process.
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.
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