Atom E645CT vs Athlon II X3 400e
Primary details
Comparing Athlon II X3 400e and Atom E645CT processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2596 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.07 | no data |
| Market segment | Desktop processor | Laptop |
| Power efficiency | 1.74 | no data |
| Architecture codename | Rana (2009−2011) | Stellarton (2010) |
| Release date | 20 October 2009 (15 years ago) | 22 November 2010 (14 years ago) |
| Launch price (MSRP) | $107 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Athlon II X3 400e and Atom E645CT 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 | 3 (Tri-Core) | 1 (Single-Core) |
| Threads | 3 | 2 |
| Base clock speed | 2.2 GHz | no data |
| Boost clock speed | 2.2 GHz | 1 GHz |
| L1 cache | 128 KB (per core) | 64 KB (per core) |
| L2 cache | 512 KB (per core) | 512 KB (per core) |
| L3 cache | 0 KB | 0 KB |
| Chip lithography | 45 nm | 45 nm |
| Die size | 169 mm2 | 26 mm2 |
| Number of transistors | 300 million | 47 million |
| 64 bit support | + | - |
| Windows 11 compatibility | - | - |
Compatibility
Information on Athlon II X3 400e and Atom E645CT 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 | AM3 | Intel BGA1466 |
| Power consumption (TDP) | 45 Watt | 4 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Athlon II X3 400e and Atom E645CT. You'll probably need this information if you require some particular technology.
| Enhanced SpeedStep (EIST) | no data | + |
| Hyper-Threading Technology | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Athlon II X3 400e and Atom E645CT. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR2 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | On certain motherboards (Chipset feature) | Intel GMA 600 |
Peripherals
Specifications and connection of peripherals supported by Athlon II X3 400e and Atom E645CT.
| PCIe version | 2.0 | no data |
Pros & cons summary
| Recency | 20 October 2009 | 22 November 2010 |
| Physical cores | 3 | 1 |
| Threads | 3 | 2 |
| Power consumption (TDP) | 45 Watt | 4 Watt |
Athlon II X3 400e has 200% more physical cores and 50% more threads.
Atom E645CT, on the other hand, has an age advantage of 1 year, and 1025% lower power consumption.
We couldn't decide between Athlon II X3 400e and Atom E645CT. We've got no test results to judge.
Note that Athlon II X3 400e is a desktop processor while Atom E645CT is a notebook one.
Should you still have questions on choice between Athlon II X3 400e and Atom E645CT, ask them in Comments section, and we shall answer.
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