i7-660UE vs Atom x5-E3940
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2706 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | 5x Intel Atom | Intel Core i7 |
| Power efficiency | 4.39 | no data |
| Designer | Intel | Intel |
| Manufacturer | Intel | Intel |
| Architecture codename | Apollo Lake (2014−2016) | Arrandale (2010−2011) |
| Release date | 30 August 2014 (11 years ago) | 2 August 2010 (15 years ago) |
| Launch price (MSRP) | no data | $301 |
Detailed specifications
Atom x5-E3940 and Core i7-660UE 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 | 4 (Quad-Core) | 2 (Dual-core) |
| Threads | 4 | 4 |
| Base clock speed | 1.6 GHz | 1.33 GHz |
| Boost clock speed | 1.8 GHz | 2.4 GHz |
| Bus type | no data | DMI 1.0 |
| Bus rate | no data | 1 × 2.5 GT/s |
| Multiplier | no data | 10 |
| L1 cache | 56K (per core) | 64 KB (per core) |
| L2 cache | 2 MB (shared) | 256 KB (per core) |
| L3 cache | 0 KB | 4 MB (shared) |
| Chip lithography | 14 nm | 32 nm |
| Die size | no data | 81 mm2 |
| Maximum core temperature | no data | 105 °C |
| Maximum case temperature (TCase) | 103 °C | no data |
| Number of transistors | no data | 382 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Atom x5-E3940 and Core i7-660UE 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 (Uniprocessor) |
| Socket | Intel BGA 1296 | BGA1288 |
| Power consumption (TDP) | 10 Watt | 18 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Atom x5-E3940 and Core i7-660UE. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE4.1, Intel® SSE4.2 |
| AES-NI | + | + |
| FMA | - | + |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | no data | 1.0 |
| Hyper-Threading Technology | no data | + |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| Flex Memory Access | no data | + |
| PAE | no data | 36 Bit |
| FDI | no data | + |
| Fast Memory Access | no data | + |
Security technologies
Atom x5-E3940 and Core i7-660UE technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Atom x5-E3940 and Core i7-660UE are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Atom x5-E3940 and Core i7-660UE. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3-1866 | DDR3-800 |
| Maximum memory size | 8 GB | 8.79 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 12.799 GB/s |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel HD Graphics 500 | Intel HD Graphics for Previous Generation Intel Processors |
| Clear Video | no data | + |
| Clear Video HD | no data | + |
| Graphics max frequency | no data | 500 MHz |
Graphics interfaces
Available interfaces and connections of Atom x5-E3940 and Core i7-660UE integrated GPUs.
| Number of displays supported | no data | 2 |
Peripherals
Specifications and connection of peripherals supported by Atom x5-E3940 and Core i7-660UE.
| PCIe version | 2.0 | 2.0 |
| PCI Express lanes | 4 | 16 |
Pros & cons summary
| Recency | 30 August 2014 | 2 August 2010 |
| Physical cores | 4 | 2 |
| Chip lithography | 14 nm | 32 nm |
| Power consumption (TDP) | 10 Watt | 18 Watt |
Atom x5-E3940 has an age advantage of 4 years, 100% more physical cores, a 128.6% more advanced lithography process, and 80% lower power consumption.
We couldn't decide between Intel Atom x5-E3940 and Intel Core i7-660UE. We've got no test results to judge.
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