Celeron N2805 vs N2940
Primary details
Comparing Celeron N2940 and Celeron N2805 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2740 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Celeron | Intel Celeron |
| Power efficiency | 8.92 | no data |
| Architecture codename | Bay Trail-M (2013−2014) | Bay Trail-M (2013−2014) |
| Release date | 22 May 2014 (10 years ago) | 11 September 2013 (11 years ago) |
| Launch price (MSRP) | no data | $107 |
Detailed specifications
Celeron N2940 and Celeron N2805 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 | 2 |
| Base clock speed | 1.83 GHz | 1.46 GHz |
| Boost clock speed | 2.25 GHz | 1.46 GHz |
| L1 cache | 56K (per core) | 56K (per core) |
| L2 cache | 512K (per core) | 512K (per core) |
| L3 cache | 0 KB | 0 KB |
| Chip lithography | 22 nm | 22 nm |
| Maximum core temperature | 100 °C | 80 °C |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Celeron N2940 and Celeron N2805 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 |
| Socket | FCBGA1170 | FCBGA1170 |
| Power consumption (TDP) | 7.5 Watt | 4.3 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Celeron N2940 and Celeron N2805. You'll probably need this information if you require some particular technology.
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | - | - |
| Hyper-Threading Technology | - | - |
| Idle States | + | + |
| Smart Connect | + | + |
| RST | no data | - |
Security technologies
Celeron N2940 and Celeron N2805 technologies aimed at improving security, for example, by protecting against hacks.
| EDB | + | + |
| Secure Key | + | no data |
| Anti-Theft | - | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Celeron N2940 and Celeron N2805 are enumerated here.
| VT-d | - | - |
| VT-x | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Celeron N2940 and Celeron N2805. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3 |
| Maximum memory size | 8 GB | 4 GB |
| Max memory channels | 2 | 1 |
| Maximum memory bandwidth | 21.32 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel® HD Graphics for Intel Atom® Processor Z3700 Series | Intel® HD Graphics for Intel Atom® Processor Z3700 Series |
| Quick Sync Video | + | - |
| Clear Video HD | - | - |
| Graphics max frequency | 854 MHz | 667 MHz |
| InTru 3D | - | - |
Graphics interfaces
Available interfaces and connections of Celeron N2940 and Celeron N2805 integrated GPUs.
| Number of displays supported | 2 | 2 |
Peripherals
Specifications and connection of peripherals supported by Celeron N2940 and Celeron N2805.
| PCIe version | 2.0 | 2.0 |
| PCI Express lanes | 4 | 4 |
| USB revision | 3.0 and 2.0 | 3.0 and 2.0 |
| Total number of SATA ports | 2 | 2 |
| Number of USB ports | 5 | 5 |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
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.
Cinebench 10 32-bit single-core
Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.
Cinebench 10 32-bit multi-core
Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.
3DMark06 CPU
3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.
wPrime 32
wPrime 32M is a math multi-thread processor test, which calculates square roots of first 32 million integer numbers. Its result is measured in seconds, so that the less is benchmark result, the faster the processor.
Cinebench 15 64-bit multi-core
Cinebench Release 15 Multi Core is a variant of Cinebench R15 which uses all the processor threads.
Cinebench 15 64-bit single-core
Cinebench R15 (standing for Release 15) is a benchmark made by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version (sometimes called Single-Thread) only uses a single processor thread to render a room full of reflective spheres and light sources.
TrueCrypt AES
TrueCrypt is a discontinued piece of software that was widely used for on-the-fly-encryption of disk partitions, now superseded by VeraCrypt. It contains several embedded performance tests, one of them being TrueCrypt AES, which measures data encryption speed using AES algorithm. Result is encryption speed in gigabytes per second.
x264 encoding pass 2
x264 Pass 2 is a slower variant of x264 video compression that produces a variable bit rate output file, which results in better quality since the higher bit rate is used when it is needed more. Benchmark result is still measured in frames per second.
x264 encoding pass 1
x264 version 4.0 is a video encoding benchmark uses MPEG 4 x264 compression method to compress a sample HD (720p) video. Pass 1 is a faster variant that produces a constant bit rate output file. Its result is measured in frames per second, which means how many frames of the source video file were encoded per second.
Pros & cons summary
| Recency | 22 May 2014 | 11 September 2013 |
| Physical cores | 4 | 2 |
| Threads | 4 | 2 |
| Power consumption (TDP) | 7 Watt | 4 Watt |
Celeron N2940 has an age advantage of 8 months, and 100% more physical cores and 100% more threads.
Celeron N2805, on the other hand, has 75% lower power consumption.
We couldn't decide between Celeron N2940 and Celeron N2805. We've got no test results to judge.
Should you still have questions on choice between Celeron N2940 and Celeron N2805, ask them in Comments section, and we shall answer.
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