i7-4940MX Extreme Edition vs i7-5557U
Primary details
Comparing Core i7-5557U and Core i7-4940MX Extreme Edition processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1943 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Core i7 | Intel Core i7EE |
| Power efficiency | 6.59 | no data |
| Architecture codename | Broadwell-U (2015) | Haswell (2013−2015) |
| Release date | 1 March 2015 (9 years ago) | 19 January 2014 (10 years ago) |
| Launch price (MSRP) | $426 | no data |
Detailed specifications
Core i7-5557U and Core i7-4940MX Extreme Edition 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 | 2 (Dual-core) | 4 (Quad-Core) |
| Threads | 4 | 8 |
| Base clock speed | 3.1 GHz | no data |
| Boost clock speed | 3.4 GHz | 3.1 GHz |
| Bus type | no data | DMI |
| Bus rate | 5 GT/s | 5 GT/s |
| Multiplier | no data | 31 |
| L1 cache | 64K (per core) | no data |
| L2 cache | 256K (per core) | 1 MB |
| L3 cache | 4 MB (shared) | 8 MB |
| Chip lithography | 14 nm | 22 nm |
| Die size | 133 mm2 | no data |
| Maximum core temperature | 105 °C | no data |
| Maximum case temperature (TCase) | 105 °C | no data |
| Number of transistors | 1900 Million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
Compatibility
Information on Core i7-5557U and Core i7-4940MX Extreme Edition 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 | no data |
| Socket | FCBGA1168 | no data |
| Power consumption (TDP) | 28 Watt | 57 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-5557U and Core i7-4940MX Extreme Edition. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 | no data |
| AES-NI | + | + |
| AVX | + | + |
| vPro | no data | + |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | 2.0 | no data |
| Hyper-Threading Technology | + | no data |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
| Flex Memory Access | + | no data |
| Smart Response | + | no data |
| FDI | + | no data |
| Fast Memory Access | + | no data |
Security technologies
Core i7-5557U and Core i7-4940MX Extreme Edition technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | + |
| EDB | + | no data |
| Secure Key | + | no data |
| Identity Protection | + | - |
| OS Guard | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i7-5557U and Core i7-4940MX Extreme Edition are enumerated here.
| AMD-V | + | - |
| VT-d | + | no data |
| VT-x | + | no data |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i7-5557U and Core i7-4940MX Extreme Edition. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | no data |
| Maximum memory size | 16 GB | 32 GB |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 25.6 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel Iris Graphics 6100 | no data |
| Max video memory | 16 GB | no data |
| Quick Sync Video | + | - |
| Clear Video | + | no data |
| Clear Video HD | + | no data |
| Graphics max frequency | 1.1 GHz | no data |
| InTru 3D | + | no data |
Graphics interfaces
Available interfaces and connections of Core i7-5557U and Core i7-4940MX Extreme Edition integrated GPUs.
| Number of displays supported | 3 | no data |
| eDP | + | no data |
| DisplayPort | + | - |
| HDMI | + | - |
Graphics image quality
Maximum display resolutions supported by Core i7-5557U and Core i7-4940MX Extreme Edition integrated GPUs, including resolutions over different interfaces.
| Max resolution over HDMI 1.4 | 2560x1600@60Hz | no data |
| Max resolution over DisplayPort | 3840x2160@60Hz | no data |
Graphics API support
APIs supported by Core i7-5557U and Core i7-4940MX Extreme Edition integrated GPUs, sometimes API versions are included.
| DirectX | 11.2/12 | no data |
| OpenGL | 4.3 | no data |
Peripherals
Specifications and connection of peripherals supported by Core i7-5557U and Core i7-4940MX Extreme Edition.
| PCIe version | 2.0 | 3.0 |
| PCI Express lanes | 12 | 16 |
Pros & cons summary
| Recency | 1 March 2015 | 19 January 2014 |
| Physical cores | 2 | 4 |
| Threads | 4 | 8 |
| Chip lithography | 14 nm | 22 nm |
| Power consumption (TDP) | 28 Watt | 57 Watt |
i7-5557U has an age advantage of 1 year, a 57.1% more advanced lithography process, and 103.6% lower power consumption.
i7-4940MX Extreme Edition, on the other hand, has 100% more physical cores and 100% more threads.
We couldn't decide between Core i7-5557U and Core i7-4940MX Extreme Edition. We've got no test results to judge.
Should you still have questions on choice between Core i7-5557U and Core i7-4940MX Extreme Edition, ask them in Comments section, and we shall answer.
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