Atom Z650 vs Celeron N2940
Primary details
Comparing Celeron N2940 and Atom Z650 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2737 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Celeron | Intel Atom |
| Power efficiency | 8.86 | no data |
| Architecture codename | Bay Trail-M (2013−2014) | Lincroft (2010−2011) |
| Release date | 22 May 2014 (10 years ago) | 11 April 2011 (13 years ago) |
Detailed specifications
Celeron N2940 and Atom Z650 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) | 1 (Single-Core) |
| Threads | 4 | 2 |
| Base clock speed | 1.83 GHz | 1.2 GHz |
| Boost clock speed | 2.25 GHz | 1.2 GHz |
| Bus type | no data | cDMI |
| Bus rate | no data | 400 MT/s |
| Multiplier | no data | 8 |
| L1 cache | 56K (per core) | 56 KB |
| L2 cache | 512K (per core) | 512 KB (per core) |
| L3 cache | 0 KB | 0 KB |
| Chip lithography | 22 nm | 45 nm |
| Die size | no data | 65 mm2 |
| Maximum core temperature | 100 °C | 90 °C |
| Number of transistors | no data | 140 million |
| 64 bit support | + | - |
| Windows 11 compatibility | - | - |
Compatibility
Information on Celeron N2940 and Atom Z650 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 | FCBGA1170 | T-PBGA518 |
| Power consumption (TDP) | 7.5 Watt | 3 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Celeron N2940 and Atom Z650. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE, Intel® SSE2, Intel® SSE3 |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | - | no data |
| Hyper-Threading Technology | - | + |
| Idle States | + | + |
| Thermal Monitoring | - | + |
| Smart Connect | + | no data |
Security technologies
Celeron N2940 and Atom Z650 technologies aimed at improving security, for example, by protecting against hacks.
| EDB | + | + |
| Secure Key | + | no data |
| Anti-Theft | - | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Celeron N2940 and Atom Z650 are enumerated here.
| VT-d | - | - |
| VT-x | + | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Celeron N2940 and Atom Z650. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR2 |
| Maximum memory size | 8 GB | 2.93 GB |
| Max memory channels | 2 | 1 |
| Maximum memory bandwidth | 21.32 GB/s | 3.2 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel® HD Graphics for Intel Atom® Processor Z3700 Series | PowerVR SGX535 |
| Quick Sync Video | + | - |
| Graphics max frequency | 854 MHz | no data |
Graphics interfaces
Available interfaces and connections of Celeron N2940 and Atom Z650 integrated GPUs.
| Number of displays supported | 2 | no data |
| LVDS | no data | + |
Peripherals
Specifications and connection of peripherals supported by Celeron N2940 and Atom Z650.
| PCIe version | 2.0 | no data |
| PCI Express lanes | 4 | no data |
| PCI support | no data | - |
| USB revision | 3.0 and 2.0 | no data |
| Total number of SATA ports | 2 | no data |
| Number of USB ports | 5 | no data |
Pros & cons summary
| Recency | 22 May 2014 | 11 April 2011 |
| Physical cores | 4 | 1 |
| Threads | 4 | 2 |
| Chip lithography | 22 nm | 45 nm |
| Power consumption (TDP) | 7 Watt | 3 Watt |
Celeron N2940 has an age advantage of 3 years, 300% more physical cores and 100% more threads, and a 104.5% more advanced lithography process.
Atom Z650, on the other hand, has 133.3% lower power consumption.
We couldn't decide between Celeron N2940 and Atom Z650. We've got no test results to judge.
Should you still have questions on choice between Celeron N2940 and Atom Z650, ask them in Comments section, and we shall answer.
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