Atom D425 vs i9-7940X
Primary details
Comparing Core i9-7940X and Atom D425 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 400 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 3.01 | no data |
| Market segment | Desktop processor | Laptop |
| Series | Intel Core i9 | no data |
| Power efficiency | 9.37 | no data |
| Architecture codename | Skylake (server) (2017−2019) | Pineview (2009−2011) |
| Release date | 30 May 2017 (7 years ago) | 21 June 2010 (14 years ago) |
| Launch price (MSRP) | $1,399 | $993 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Core i9-7940X and Atom D425 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 | 14 (Tetradeca-Core) | 1 (Single-Core) |
| Threads | 28 | 2 |
| Base clock speed | 3.1 GHz | 1.8 GHz |
| Boost clock speed | 4.4 GHz | 1.83 GHz |
| Bus type | DMI 3.0 | no data |
| Bus rate | 4 × 8 GT/s | no data |
| L1 cache | 896 KB | 64 KB (per core) |
| L2 cache | 14 MB | 512 KB (per core) |
| L3 cache | 19.25 MB (shared) | 0 KB |
| Chip lithography | 14 nm | 45 nm |
| Die size | 484 mm2 | 66 mm2 |
| Maximum core temperature | 102 °C | 100 °C |
| Number of transistors | no data | 123 million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | - |
| Unlocked multiplier | + | - |
Compatibility
Information on Core i9-7940X and Atom D425 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 (Uniprocessor) | 1 |
| Socket | FCLGA2066 | FCBGA559 |
| Power consumption (TDP) | 165 Watt | 10 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i9-7940X and Atom D425. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512 | Intel® SSE2, Intel® SSE3, Intel® SSSE3 |
| AES-NI | + | - |
| AVX | + | - |
| Enhanced SpeedStep (EIST) | + | - |
| Turbo Boost Technology | 2.0 | - |
| Hyper-Threading Technology | + | + |
| TSX | + | - |
| Idle States | no data | - |
| Demand Based Switching | no data | - |
| PAE | no data | 32 Bit |
| Turbo Boost Max 3.0 | + | no data |
Security technologies
Core i9-7940X and Atom D425 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | - |
| EDB | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i9-7940X and Atom D425 are enumerated here.
| VT-d | + | - |
| VT-x | + | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i9-7940X and Atom D425. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-2666 | DDR2, DDR3 |
| Maximum memory size | 128 GB | 4 GB |
| Max memory channels | 4 | 1 |
| Maximum memory bandwidth | 85.33 GB/s | 6.4 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | Intel GMA 3150 |
Peripherals
Specifications and connection of peripherals supported by Core i9-7940X and Atom D425.
| PCIe version | 3.0 | no data |
| PCI Express lanes | 44 | no data |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
Pros & cons summary
| Recency | 30 May 2017 | 21 June 2010 |
| Physical cores | 14 | 1 |
| Threads | 28 | 2 |
| Chip lithography | 14 nm | 45 nm |
| Power consumption (TDP) | 165 Watt | 10 Watt |
i9-7940X has an age advantage of 6 years, 1300% more physical cores and 1300% more threads, and a 221.4% more advanced lithography process.
Atom D425, on the other hand, has 1550% lower power consumption.
We couldn't decide between Core i9-7940X and Atom D425. We've got no test results to judge.
Note that Core i9-7940X is a desktop processor while Atom D425 is a notebook one.
Should you still have questions on choice between Core i9-7940X and Atom D425, ask them in Comments section, and we shall answer.
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