Atom x5-E3940 vs Z620
Primary details
Comparing Atom Z620 and Atom x5-E3940 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 2324 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Atom | 5x Intel Atom |
| Power efficiency | no data | 11.63 |
| Architecture codename | Lincroft (2010−2011) | Apollo Lake (2014−2016) |
| Release date | 4 May 2010 (14 years ago) | 30 August 2014 (10 years ago) |
Detailed specifications
Atom Z620 and Atom x5-E3940 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 | 1 (Single-Core) | 4 (Quad-Core) |
| Threads | 1 | 4 |
| Base clock speed | no data | 1.6 GHz |
| Boost clock speed | 0.9 GHz | 1.8 GHz |
| Bus type | cDMI | no data |
| Bus rate | 400 MT/s | no data |
| Multiplier | 9 | no data |
| L1 cache | 64K (per core) | 56K (per core) |
| L2 cache | 512 KB (per core) | 2 MB (shared) |
| L3 cache | 0 KB | 0 KB |
| Chip lithography | 45 nm | 14 nm |
| Die size | 65.2526 mm2 | no data |
| Maximum case temperature (TCase) | no data | 103 °C |
| Number of transistors | 140 million | no data |
| 64 bit support | - | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Atom Z620 and Atom x5-E3940 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 | Intel BGA 518 | Intel BGA 1296 |
| Power consumption (TDP) | 1.3 Watt | 10 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Atom Z620 and Atom x5-E3940. You'll probably need this information if you require some particular technology.
| AES-NI | - | + |
| Enhanced SpeedStep (EIST) | + | + |
Security technologies
Atom Z620 and Atom x5-E3940 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Atom Z620 and Atom x5-E3940 are enumerated here.
| VT-d | no data | + |
| VT-x | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Atom Z620 and Atom x5-E3940. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2 | DDR3-1866 |
| Maximum memory size | 2 GB | 8 GB |
| Max memory channels | 1 | no data |
| Maximum memory bandwidth | 3.2 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | PowerVR SGX535 | Intel HD Graphics 500 |
Peripherals
Specifications and connection of peripherals supported by Atom Z620 and Atom x5-E3940.
| PCIe version | no data | 2.0 |
| PCI Express lanes | no data | 4 |
Pros & cons summary
| Recency | 4 May 2010 | 30 August 2014 |
| Physical cores | 1 | 4 |
| Threads | 1 | 4 |
| Chip lithography | 45 nm | 14 nm |
| Power consumption (TDP) | 1 Watt | 10 Watt |
Atom Z620 has 900% lower power consumption.
Atom x5-E3940, on the other hand, has an age advantage of 4 years, 300% more physical cores and 300% more threads, and a 221.4% more advanced lithography process.
We couldn't decide between Atom Z620 and Atom x5-E3940. We've got no test results to judge.
Should you still have questions on choice between Atom Z620 and Atom x5-E3940, ask them in Comments section, and we shall answer.
Similar processor comparisons
We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.
