i5-10400F vs Atom E645CT
Primary details
Comparing Atom E645CT and Core i5-10400F processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 915 |
| Place by popularity | not in top-100 | 12 |
| Cost-effectiveness evaluation | no data | 22.94 |
| Market segment | Laptop | Desktop processor |
| Power efficiency | no data | 11.94 |
| Architecture codename | Stellarton (2010) | Comet Lake (2020) |
| Release date | 22 November 2010 (14 years ago) | 30 April 2020 (4 years ago) |
| Launch price (MSRP) | no data | $155 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Atom E645CT and Core i5-10400F 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) | 6 (Hexa-Core) |
| Threads | 2 | 12 |
| Base clock speed | no data | 2.9 GHz |
| Boost clock speed | 1 GHz | 4.3 GHz |
| Bus rate | no data | 8 GT/s |
| L1 cache | 64 KB (per core) | 64K (per core) |
| L2 cache | 512 KB (per core) | 256K (per core) |
| L3 cache | 0 KB | 12 MB (shared) |
| Chip lithography | 45 nm | 14 nm |
| Die size | 26 mm2 | no data |
| Maximum core temperature | no data | 100 °C |
| Maximum case temperature (TCase) | no data | 72 °C |
| Number of transistors | 47 million | no data |
| 64 bit support | - | + |
| Windows 11 compatibility | - | + |
Compatibility
Information on Atom E645CT and Core i5-10400F 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 | FCLGA1200 |
| Power consumption (TDP) | 4 Watt | 65 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Atom E645CT and Core i5-10400F. 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 | - | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | no data | 2.0 |
| Hyper-Threading Technology | + | + |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| Turbo Boost Max 3.0 | no data | - |
Security technologies
Atom E645CT and Core i5-10400F technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
| EDB | no data | + |
| Secure Key | no data | + |
| Identity Protection | - | + |
| SGX | no data | Yes with Intel® ME |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Atom E645CT and Core i5-10400F 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 i5-10400F. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR2 | DDR4 |
| Maximum memory size | no data | 128 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 41.6 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel GMA 600 | no data |
Peripherals
Specifications and connection of peripherals supported by Atom E645CT and Core i5-10400F.
| PCIe version | no data | 3.0 |
| PCI Express lanes | no data | 16 |
Pros & cons summary
| Recency | 22 November 2010 | 30 April 2020 |
| Physical cores | 1 | 6 |
| Threads | 2 | 12 |
| Chip lithography | 45 nm | 14 nm |
| Power consumption (TDP) | 4 Watt | 65 Watt |
Atom E645CT has 1525% lower power consumption.
i5-10400F, on the other hand, has an age advantage of 9 years, 500% more physical cores and 500% more threads, and a 221.4% more advanced lithography process.
We couldn't decide between Atom E645CT and Core i5-10400F. We've got no test results to judge.
Be aware that Atom E645CT is a notebook processor while Core i5-10400F is a desktop one.
Should you still have questions on choice between Atom E645CT and Core i5-10400F, ask them in Comments section, and we shall answer.
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