i7-6660U vs Athlon 64 X2 6400+ BE
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 2092 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 0.15 |
| Market segment | Desktop processor | Laptop |
| Series | no data | Intel Core i7 |
| Power efficiency | no data | 14.68 |
| Designer | AMD | Intel |
| Architecture codename | Windsor (2006−2007) | Skylake (2015−2016) |
| Release date | August 2007 (18 years ago) | 20 March 2016 (9 years ago) |
| Launch price (MSRP) | no data | $415 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
Athlon 64 X2 6400+ BE and Core i7-6660U 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) | 2 (Dual-core) |
| Threads | 2 | 4 |
| Base clock speed | no data | 2.4 GHz |
| Boost clock speed | 3.2 GHz | 3.4 GHz |
| Bus type | no data | OPI |
| Bus rate | no data | 4 GT/s |
| Multiplier | no data | 24 |
| L1 cache | 256 KB | 128 KB |
| L2 cache | 1 MB | 512 KB |
| L3 cache | 0 KB | 4 MB |
| Chip lithography | 90 nm | 14 nm |
| Die size | 230 mm2 | no data |
| Maximum core temperature | no data | 100 °C |
| Number of transistors | 227 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | + | - |
Compatibility
Information on Athlon 64 X2 6400+ BE and Core i7-6660U 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 (Uniprocessor) |
| Socket | AM2 | FCBGA1356 |
| Power consumption (TDP) | 125 Watt | 15 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Athlon 64 X2 6400+ BE and Core i7-6660U. 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 | - | + |
| vPro | no data | + |
| Enhanced SpeedStep (EIST) | no data | + |
| eDRAM | no data | 64 MB |
| My WiFi | no data | + |
| Turbo Boost Technology | no data | 2.0 |
| Hyper-Threading Technology | no data | + |
| TSX | - | + |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| Flex Memory Access | no data | + |
| SIPP | - | + |
| Smart Response | no data | + |
Security technologies
Athlon 64 X2 6400+ BE and Core i7-6660U technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
| EDB | no data | + |
| MPX | - | + |
| Identity Protection | - | + |
| SGX | no data | Yes with Intel® ME |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Athlon 64 X2 6400+ BE and Core i7-6660U 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 Athlon 64 X2 6400+ BE and Core i7-6660U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR4-2133, LPDDR3-1866, DDR3L-1600 |
| Maximum memory size | no data | 32 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 34.134 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Intel Iris Graphics 540 |
| Max video memory | no data | 32 GB |
| Quick Sync Video | - | + |
| Clear Video | no data | + |
| Clear Video HD | no data | + |
| Graphics max frequency | no data | 1.05 GHz |
| InTru 3D | no data | + |
Graphics interfaces
Available interfaces and connections of Athlon 64 X2 6400+ BE and Core i7-6660U integrated GPUs.
| Number of displays supported | no data | 3 |
| eDP | no data | + |
| DisplayPort | - | + |
| HDMI | - | + |
| DVI | no data | + |
Graphics image quality
Maximum display resolutions supported by Athlon 64 X2 6400+ BE and Core i7-6660U integrated GPUs, including resolutions over different interfaces.
| 4K resolution support | no data | + |
| Max resolution over HDMI 1.4 | no data | 4096x2304@24Hz |
| Max resolution over eDP | no data | 4096x2304@60Hz |
| Max resolution over DisplayPort | no data | 4096x2304@60Hz |
Graphics API support
APIs supported by Athlon 64 X2 6400+ BE and Core i7-6660U integrated GPUs, sometimes API versions are included.
| DirectX | no data | 12 |
| OpenGL | no data | 4.5 |
Peripherals
Specifications and connection of peripherals supported by Athlon 64 X2 6400+ BE and Core i7-6660U.
| PCIe version | no data | 3.0 |
| PCI Express lanes | no data | 12 |
Pros & cons summary
| Threads | 2 | 4 |
| Chip lithography | 90 nm | 14 nm |
| Power consumption (TDP) | 125 Watt | 15 Watt |
i7-6660U has 100% more threads, a 542.9% more advanced lithography process, and 733.3% lower power consumption.
We couldn't decide between AMD Athlon 64 X2 6400+ BE and Intel Core i7-6660U. We've got no test results to judge.
Note that Athlon 64 X2 6400+ BE is a desktop processor while Core i7-6660U is a notebook one.
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