i7-660UM vs Atom x5-Z8550
Aggregate performance score
Core i7-660UM outperforms Atom x5-Z8550 by a moderate 12% based on our aggregate benchmark results.
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 3028 | 2943 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 0.02 |
| Market segment | Laptop | Laptop |
| Series | 5x Intel Atom | Intel Core i7 |
| Power efficiency | no data | 1.71 |
| Designer | Intel | Intel |
| Manufacturer | no data | Intel |
| Architecture codename | Cherry Trail (2015−2016) | Arrandale (2010−2011) |
| Release date | 8 February 2016 (10 years ago) | 24 May 2010 (15 years ago) |
| Launch price (MSRP) | no data | $317 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
Atom x5-Z8550 and Core i7-660UM 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 | 1.44 GHz | 1.33 GHz |
| Boost clock speed | 2.4 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 | no data | 64 KB (per core) |
| L2 cache | 2 MB | 256 KB (per core) |
| L3 cache | 0 KB | 4 MB (shared) |
| Chip lithography | 14 nm | 32 nm |
| Die size | no data | 81+144 mm2 |
| Maximum core temperature | 90 °C | 105 °C |
| Number of transistors | no data | 382+177 Million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Atom x5-Z8550 and Core i7-660UM 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 | UTFCBGA1380 | BGA1288 |
| Power consumption (TDP) | no data | 18 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Atom x5-Z8550 and Core i7-660UM. 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 | - | + |
| vPro | no data | + |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | no data | + |
| Hyper-Threading Technology | no data | + |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| Flex Memory Access | no data | + |
| PAE | no data | 36 Bit |
| Turbo Boost Max 3.0 | - | no data |
| FDI | no data | + |
| Fast Memory Access | no data | + |
Security technologies
Atom x5-Z8550 and Core i7-660UM technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
| EDB | no data | + |
| Secure Boot | + | no data |
| Identity Protection | + | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Atom x5-Z8550 and Core i7-660UM are enumerated here.
| VT-d | no data | + |
| VT-x | + | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Atom x5-Z8550 and Core i7-660UM. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3-800 |
| Maximum memory size | 8 GB | 8 GB |
| Max memory channels | 2 | 2 |
| Maximum memory bandwidth | 25.6 GB/s | 12.799 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel HD Graphics 400 (Braswell) (200 - 600 MHz) | Intel HD Graphics for Previous Generation Intel Processors |
| Max video memory | 8 GB | no data |
| Clear Video | no data | + |
| Clear Video HD | no data | + |
| Graphics max frequency | 600 MHz | 500 MHz |
| Execution Units | 12 | no data |
Graphics interfaces
Available interfaces and connections of Atom x5-Z8550 and Core i7-660UM integrated GPUs.
| Number of displays supported | 3 | 2 |
Graphics image quality
Maximum display resolutions supported by Atom x5-Z8550 and Core i7-660UM integrated GPUs, including resolutions over different interfaces.
| Max resolution over HDMI 1.4 | 3840x2160 | no data |
| Max resolution over eDP | 2560x1600 | no data |
Peripherals
Specifications and connection of peripherals supported by Atom x5-Z8550 and Core i7-660UM.
| PCIe version | 2.0 | 2.0 |
| PCI Express lanes | 2 | 16 |
| USB revision | 3.0 | no data |
| Number of USB ports | 3 | no data |
Synthetic benchmarks
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance. Other than that, Passmark measures multi-core performance.
Pros & cons summary
| Performance score | 0.65 | 0.73 |
| Integrated graphics card | 0.42 | 0.72 |
| Recency | 8 February 2016 | 24 May 2010 |
| Physical cores | 4 | 2 |
| Chip lithography | 14 nm | 32 nm |
Atom x5-Z8550 has an age advantage of 5 years, 100% more physical cores, and a 129% more advanced lithography process.
i7-660UM, on the other hand, has a 12% higher aggregate performance score, and 71% faster integrated GPU.
The Intel Core i7-660UM is our recommended choice as it beats the Intel Atom x5-Z8550 in performance tests.
Other comparisons
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