Celeron 3855U vs N2940
Aggregate performance score
Celeron 3855U outperforms Celeron N2940 by a moderate 18% based on our aggregate benchmark results.
Primary details
Comparing Celeron N2940 and Celeron 3855U processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2738 | 2632 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Celeron | Intel Celeron |
| Power efficiency | 8.86 | 4.86 |
| Architecture codename | Bay Trail-M (2013−2014) | Skylake (2015−2016) |
| Release date | 22 May 2014 (10 years ago) | 15 August 2015 (9 years ago) |
| Launch price (MSRP) | no data | $107 |
Detailed specifications
Celeron N2940 and Celeron 3855U 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 | 1.6 GHz |
| Boost clock speed | 2.25 GHz | 1.6 GHz |
| Bus type | no data | OPI |
| Bus rate | no data | 4 GT/s |
| Multiplier | no data | 16 |
| L1 cache | 56K (per core) | 128 KB |
| L2 cache | 512K (per core) | 512 KB |
| L3 cache | 0 KB | 2 MB |
| Chip lithography | 22 nm | 14 nm |
| Die size | no data | 98.57 mm2 |
| Maximum core temperature | 100 °C | 100 °C |
| Number of transistors | no data | 1750 Million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Celeron N2940 and Celeron 3855U 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 | FCBGA1356 |
| Power consumption (TDP) | 7.5 Watt | 15 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Celeron N2940 and Celeron 3855U. 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 | - | + |
| Enhanced SpeedStep (EIST) | + | + |
| My WiFi | no data | + |
| Turbo Boost Technology | - | - |
| Hyper-Threading Technology | - | - |
| Idle States | + | + |
| Thermal Monitoring | - | + |
| Flex Memory Access | no data | + |
| Smart Response | no data | + |
| Smart Connect | + | no data |
Security technologies
Celeron N2940 and Celeron 3855U technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | - |
| EDB | + | + |
| Secure Key | + | + |
| Identity Protection | - | + |
| SGX | no data | Yes with Intel® ME |
| OS Guard | no data | - |
| Anti-Theft | - | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Celeron N2940 and Celeron 3855U are enumerated here.
| VT-d | - | + |
| VT-x | + | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Celeron N2940 and Celeron 3855U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR4-1866/2133, LPDDR3-1600/1866, DDR3L-1333/1600 |
| Maximum memory size | 8 GB | 32 GB |
| Max memory channels | 2 | 2 |
| Maximum memory bandwidth | 21.32 GB/s | 34.134 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel® HD Graphics for Intel Atom® Processor Z3700 Series | Intel HD Graphics 510 |
| Max video memory | no data | 32 GB |
| Quick Sync Video | + | + |
| Clear Video HD | - | + |
| Graphics max frequency | 854 MHz | 900 MHz |
Graphics interfaces
Available interfaces and connections of Celeron N2940 and Celeron 3855U integrated GPUs.
| Number of displays supported | 2 | 3 |
| eDP | no data | + |
| DisplayPort | - | + |
| HDMI | - | + |
| DVI | no data | + |
Graphics image quality
Maximum display resolutions supported by Celeron N2940 and Celeron 3855U integrated GPUs, including resolutions over different interfaces.
| 4K resolution support | no data | + |
| Max resolution over HDMI 1.4 | no data | 4096x2304@24Hz |
| Max resolution over eDP | no data | 4096x2304@60Hz |
| Max resolution over DisplayPort | no data | 4096x2304@60Hz |
| Max resolution over VGA | no data | N/A |
Graphics API support
APIs supported by Celeron N2940 and Celeron 3855U integrated GPUs, sometimes API versions are included.
| DirectX | no data | 12 |
| OpenGL | no data | 4.4 |
Peripherals
Specifications and connection of peripherals supported by Celeron N2940 and Celeron 3855U.
| PCIe version | 2.0 | 2.0 |
| PCI Express lanes | 4 | 10 |
| USB revision | 3.0 and 2.0 | no data |
| Total number of SATA ports | 2 | no data |
| Number of USB ports | 5 | no data |
Synthetic benchmark performance
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. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
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.
GeekBench 5 Single-Core
GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.
GeekBench 5 Multi-Core
GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.
Pros & cons summary
| Performance score | 0.68 | 0.80 |
| Recency | 22 May 2014 | 15 August 2015 |
| Physical cores | 4 | 2 |
| Threads | 4 | 2 |
| Chip lithography | 22 nm | 14 nm |
| Power consumption (TDP) | 7 Watt | 15 Watt |
Celeron N2940 has 100% more physical cores and 100% more threads, and 114.3% lower power consumption.
Celeron 3855U, on the other hand, has a 17.6% higher aggregate performance score, an age advantage of 1 year, and a 57.1% more advanced lithography process.
The Celeron 3855U is our recommended choice as it beats the Celeron N2940 in performance tests.
Should you still have questions on choice between Celeron N2940 and Celeron 3855U, ask them in Comments section, and we shall answer.
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