i5-1240P vs Atom E645CT
Primary details
Comparing Atom E645CT and Core i5-1240P processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 717 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | no data | Intel Alder Lake-P |
| Power efficiency | no data | 36.37 |
| Architecture codename | Stellarton (2010) | Alder Lake-P (2022) |
| Release date | 22 November 2010 (14 years ago) | 23 February 2022 (2 years ago) |
Detailed specifications
Atom E645CT and Core i5-1240P 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 | 1 (Single-Core) | 12 (Dodeca-Core) |
| Threads | 2 | 16 |
| Base clock speed | no data | 1.7 GHz |
| Boost clock speed | 1 GHz | 4.4 GHz |
| L1 cache | 64 KB (per core) | 80K (per core) |
| L2 cache | 512 KB (per core) | 1.25 MB (per core) |
| L3 cache | 0 KB | 12 MB (shared) |
| Chip lithography | 45 nm | Intel 7 nm |
| Die size | 26 mm2 | 217 mm2 |
| Maximum core temperature | no data | 100 °C |
| Number of transistors | 47 million | no data |
| 64 bit support | - | + |
| Windows 11 compatibility | - | + |
Compatibility
Information on Atom E645CT and Core i5-1240P 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 | Intel BGA1466 | FCBGA1744 |
| Power consumption (TDP) | 4 Watt | 28 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Atom E645CT and Core i5-1240P. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 |
| AES-NI | - | + |
| FMA | - | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | + | + |
| Speed Shift | no data | + |
| Hyper-Threading Technology | + | + |
| TSX | - | + |
| Thermal Monitoring | - | + |
| Flex Memory Access | no data | + |
| Deep Learning Boost | - | + |
Security technologies
Atom E645CT and Core i5-1240P 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 Atom E645CT and Core i5-1240P are enumerated here.
| VT-d | no data | + |
| VT-x | no data | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Atom E645CT and Core i5-1240P. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR2 | DDR4, DDR5 |
| Maximum memory size | no data | 64 GB |
| Max memory channels | no data | 2 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel GMA 600 | Intel® Iris® Xe Graphics eligible |
| Quick Sync Video | - | + |
| Graphics max frequency | no data | 1.3 GHz |
| Execution Units | no data | 80 |
Graphics interfaces
Available interfaces and connections of Atom E645CT and Core i5-1240P integrated GPUs.
| Number of displays supported | no data | 4 |
Graphics image quality
Maximum display resolutions supported by Atom E645CT and Core i5-1240P integrated GPUs, including resolutions over different interfaces.
| Max resolution over HDMI 1.4 | no data | 4096 x 2304 @ 60Hz |
| Max resolution over eDP | no data | 4096 x 2304 @ 120Hz |
| Max resolution over DisplayPort | no data | 7680 x 4320 @ 60Hz |
Graphics API support
APIs supported by Atom E645CT and Core i5-1240P integrated GPUs, sometimes API versions are included.
| DirectX | no data | 12.1 |
| OpenGL | no data | 4.6 |
Peripherals
Specifications and connection of peripherals supported by Atom E645CT and Core i5-1240P.
| PCIe version | no data | 4.0 |
| PCI Express lanes | no data | 20 |
Pros & cons summary
| Recency | 22 November 2010 | 23 February 2022 |
| Physical cores | 1 | 12 |
| Threads | 2 | 16 |
| Power consumption (TDP) | 4 Watt | 28 Watt |
Atom E645CT has 600% lower power consumption.
i5-1240P, on the other hand, has an age advantage of 11 years, and 1100% more physical cores and 700% more threads.
We couldn't decide between Atom E645CT and Core i5-1240P. We've got no test results to judge.
Should you still have questions on choice between Atom E645CT and Core i5-1240P, ask them in Comments section, and we shall answer.
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