i7-660UE vs i5-9400F
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1374 | not rated |
| Place by popularity | 22 | not in top-100 |
| Cost-effectiveness evaluation | 5.63 | no data |
| Market segment | Desktop processor | Laptop |
| Series | Intel Core i5 | Intel Core i7 |
| Power efficiency | 3.51 | no data |
| Designer | Intel | Intel |
| Manufacturer | Intel | Intel |
| Architecture codename | Coffee Lake-R (2018−2019) | Arrandale (2010−2011) |
| Release date | 7 January 2019 (7 years ago) | 15 August 2010 (15 years ago) |
| Launch price (MSRP) | $182 | $301 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
Basic parameters of Core i5-9400F and Core i7-660UE: 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 | 6 (Hexa-Core) | 2 (Dual-core) |
| Threads | 6 | 4 |
| Base clock speed | 2.9 GHz | 1.33 GHz |
| Boost clock speed | 4.1 GHz | 2.4 GHz |
| Bus type | DMI 3.0 | DMI 1.0 |
| Bus rate | 4 × 8 GT/s | 1 × 2.5 GT/s |
| Multiplier | 29 | 10 |
| L1 cache | 385 KB | 128 KB |
| L2 cache | 1.5 MB | 512 KB |
| L3 cache | 9 MB (shared) | 4 MB (shared) |
| Chip lithography | 14 nm | 32 nm |
| Die size | 149 mm2 | 81 mm2 |
| Maximum core temperature | 100 °C | 105 °C |
| Maximum case temperature (TCase) | 72 °C | no data |
| Number of transistors | no data | 382 million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | - |
Compatibility
Information on Core i5-9400F 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 | FCLGA1151 | BGA1288 |
| Power consumption (TDP) | 65 Watt | 18 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i5-9400F and Core i7-660UE. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 | Intel® SSE4.1, Intel® SSE4.2 |
| AES-NI | + | + |
| FMA | - | + |
| AVX | + | - |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | 2.0 | 1.0 |
| Hyper-Threading Technology | - | + |
| Idle States | + | + |
| Thermal Monitoring | + | + |
| Flex Memory Access | no data | + |
| PAE | no data | 36 Bit |
| FDI | no data | + |
| Fast Memory Access | no data | + |
Security technologies
Core i5-9400F and Core i7-660UE technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | + |
| EDB | + | + |
| MPX | + | - |
| Identity Protection | + | - |
| SGX | Yes with Intel® ME | no data |
| OS Guard | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i5-9400F and Core i7-660UE are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i5-9400F and Core i7-660UE. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-2666 | DDR3-800 |
| Maximum memory size | 128 GB | 8.79 GB |
| Max memory channels | 2 | 2 |
| Maximum memory bandwidth | 42.671 GB/s | 12.799 GB/s |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | 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 Core i5-9400F and Core i7-660UE integrated GPUs.
| Number of displays supported | no data | 2 |
Peripherals
Specifications and connection of peripherals supported by Core i5-9400F and Core i7-660UE.
| PCIe version | 3.0 | 2.0 |
| PCI Express lanes | 16 | 16 |
Pros & cons summary
| Recency | 7 January 2019 | 15 August 2010 |
| Physical cores | 6 | 2 |
| Threads | 6 | 4 |
| Chip lithography | 14 nm | 32 nm |
| Power consumption (TDP) | 65 Watt | 18 Watt |
i5-9400F has an age advantage of 8 years, 200% more physical cores and 50% more threads, and a 129% more advanced lithography process.
i7-660UE, on the other hand, has 261% lower power consumption.
We couldn't decide between Intel Core i5-9400F and Intel Core i7-660UE. We've got no test results to judge.
Note that Core i5-9400F is a desktop processor while Core i7-660UE is a notebook one.
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