Intel Core i7-7660U vs Intel Atom Z3740D
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CPU comparison with benchmarks
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| Intel Core i7-7660U | Intel Atom Z3740D | |
CPU comparisonIn this CPU comparison, we compare the Intel Core i7-7660U and the Intel Atom Z3740D and use benchmarks to check which processor is faster.
We compare the Intel Core i7-7660U 2 core processor released in Q4/2016 with the Intel Atom Z3740D which has 4 CPU cores and was introduced in Q3/2013. |
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| Intel Core i7 (298) | Family | Intel Atom (108) |
| Intel Core i 7000U (18) | CPU group | Intel Atom Z3700 (16) |
| 7 | Generation | 4 |
| Kaby Lake U | Architecture | Bay Trail |
| Mobile | Segment | Mobile |
| Intel Core i7-6660U | Predecessor | -- |
| -- | Successor | -- |
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CPU Cores and Base FrequencyThe Intel Core i7-7660U is a 2 core processor with a clock frequency of 2.50 GHz (4.00 GHz). The processor can compute 4 threads at the same time. The Intel Atom Z3740D clocks with 1.33 GHz (1.83 GHz), has 4 CPU cores and can calculate 4 threads in parallel. |
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| Intel Core i7-7660U | Characteristic | Intel Atom Z3740D |
| 2 | Cores | 4 |
| 4 | Threads | 4 |
| normal | Core architecture | normal |
| Yes | Hyperthreading | No |
| No | Overclocking ? | No |
| 2.50 GHz | Frequency | 1.33 GHz |
| 4.00 GHz | Turbo Frequency (1 Core) | 1.83 GHz |
| 3.80 GHz | Turbo Frequency (All Cores) | -- |
Integrated graphics (iGPU)Graphics (iGPU) integrated into the processor not only enable image output without having to rely on a dedicated graphics solution, but can also efficiently accelerate video playback. |
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| Intel Iris Plus Graphics 640 | GPU | Intel HD Graphics (Bay Trail GT1) |
| 0.30 GHz | GPU frequency | 0.31 GHz |
| 1.05 GHz | GPU (Turbo) | 0.69 GHz |
| 9.5 | GPU Generation | 7 |
| 14 nm | Technology | 22 nm |
| 3 | Max. displays | 2 |
| 48 | Compute units | 4 |
| 384 | Shader | 32 |
| No | Hardware Raytracing | No |
| No | Frame Generation | No |
| 32 GB | Max. GPU Memory | 2 GB |
| 12 | DirectX Version | 11.2 |
Hardware codec supportA photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos. |
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| Intel Iris Plus Graphics 640 | GPU | Intel HD Graphics (Bay Trail GT1) |
| Decode / Encode | Codec h265 / HEVC (8 bit) | No |
| Decode / Encode | Codec h265 / HEVC (10 bit) | No |
| Decode / Encode | Codec h264 | Decode / Encode |
| Decode / Encode | Codec VP9 | No |
| Decode / Encode | Codec VP8 | No |
| No | Codec AV1 | No |
| Decode / Encode | Codec AVC | Decode / Encode |
| Decode | Codec VC-1 | Decode |
| Decode / Encode | Codec JPEG | Decode |
Memory & PCIeUp to 32 GB of memory in a maximum of 2 memory channels is supported by the Intel Core i7-7660U, while the Intel Atom Z3740D supports a maximum of 2 GB of memory with a maximum memory bandwidth of 10.6 GB/s enabled. |
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| Intel Core i7-7660U | Characteristic | Intel Atom Z3740D |
| DDR4-2133, DDR3-1866 | Memory | DDR3L-1333 |
| 32 GB | Max. Memory | 2 GB |
| 2 (Dual Channel) | Memory channels | 1 (Single Channel) |
| 34.1 GB/s | Max. Bandwidth | 10.6 GB/s |
| No | ECC | No |
| -- | L2 Cache | -- |
| 4.00 MB | L3 Cache | 2.00 MB |
| 3.0 | PCIe version | -- |
| 12 | PCIe lanes | -- |
| 11.8 GB/s | PCIe Bandwidth | -- |
Thermal ManagementThe Intel Core i7-7660U has a TDP of 15 W. The TDP of the Intel Atom Z3740D is 4 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution. |
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| Intel Core i7-7660U | Characteristic | Intel Atom Z3740D |
| 15 W | TDP (PL1 / PBP) | 4 W |
| -- | TDP (PL2) | -- |
| -- | TDP up | -- |
| -- | TDP down | -- |
| -- | Tjunction max. | 90 °C |
Technical detailsThe Intel Core i7-7660U has 4.00 MB cache and is manufactured in 14 nm. The cache of Intel Atom Z3740D is at 2.00 MB. The processor is manufactured in 22 nm. |
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| Intel Core i7-7660U | Characteristic | Intel Atom Z3740D |
| 14 nm | Technology | 22 nm |
| Monolithic | Chip design | Monolithic |
| x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
| SSE4.1, SSE4.2, AVX2 | ISA extensions | SSE4.1, SSE4.2 |
| BGA 1356 | Socket | BGA 592 |
| VT-x, VT-x EPT, VT-d | Virtualization | VT-x, VT-x EPT |
| Yes | AES-NI | Yes |
| Windows 10, Linux | Operating systems | |
| Q4/2016 | Release date | Q3/2013 |
| -- | Release price | -- |
| show more data | show more data | |
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4C 4T @ 1.33 GHz (1.83 GHz) buy now on Amazon and save!
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Rate these processors
Average performance in benchmarks
⌀ Single core performance in 1 CPU benchmarks
⌀ Multi core performance in 2 CPU benchmarks
Geekbench 5, 64bit (Single-Core)
Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
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Intel Core i7-7660U
2C 4T @ 4.00 GHz |
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Intel Atom Z3740D
4C 4T @ 1.83 GHz |
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Geekbench 5, 64bit (Multi-Core)
Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
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Intel Core i7-7660U
2C 4T @ 3.80 GHz |
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Intel Atom Z3740D
4C 4T @ 1.33 GHz |
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iGPU - FP32 Performance (Single-precision GFLOPS)
The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
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Intel Core i7-7660U
Intel Iris Plus Graphics 640 @ 1.05 GHz |
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Intel Atom Z3740D
Intel HD Graphics (Bay Trail GT1) @ 0.69 GHz |
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Estimated results for PassMark CPU Mark
Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
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Intel Core i7-7660U
2C 4T @ 3.80 GHz |
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Intel Atom Z3740D
4C 4T @ 1.33 GHz |
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Cinebench R23 (Single-Core)
Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
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Intel Core i7-7660U
2C 4T @ 4.00 GHz |
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Intel Atom Z3740D
4C 4T @ 1.83 GHz |
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Cinebench R23 (Multi-Core)
Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
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Intel Core i7-7660U
2C 4T @ 3.80 GHz |
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Intel Atom Z3740D
4C 4T @ 1.33 GHz |
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Geekbench 6 (Single-Core)
Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
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Intel Core i7-7660U
2C 4T @ 4.00 GHz |
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Intel Atom Z3740D
4C 4T @ 1.83 GHz |
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Geekbench 6 (Multi-Core)
Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
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Intel Core i7-7660U
2C 4T @ 3.80 GHz |
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Intel Atom Z3740D
4C 4T @ 1.33 GHz |
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Cinebench R15 (Single-Core)
Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
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Intel Core i7-7660U
2C 4T @ 4.00 GHz |
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Intel Atom Z3740D
4C 4T @ 1.83 GHz |
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Cinebench R15 (Multi-Core)
Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
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Intel Core i7-7660U
2C 4T @ 3.80 GHz |
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Intel Atom Z3740D
4C 4T @ 1.33 GHz |
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Devices using this processor |
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| Intel Core i7-7660U | Intel Atom Z3740D |
| Apple MacBook Pro 13 (2017) | Unknown |
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