Atom N455 vs Celeron N2820
Primary details
Comparing Celeron N2820 and Atom N455 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Celeron | Intel Atom |
| Architecture codename | Bay Trail-M (2013−2014) | Pinetrail (2009−2010) |
| Release date | 1 December 2013 (10 years ago) | 1 June 2010 (14 years ago) |
| Launch price (MSRP) | $107 | $64 |
| Current price | $215 (2x MSRP) | $163 (2.5x MSRP) |
Detailed specifications
Celeron N2820 and Atom N455 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 | 2 (Dual-core) | 1 (Single-Core) |
| Threads | 2 | 2 |
| Base clock speed | 2.13 GHz | 1.66 GHz |
| Boost clock speed | 2.39 GHz | 1.67 GHz |
| Bus support | no data | 533 MHz |
| L1 cache | 56K (per core) | 64 KB (per core) |
| L2 cache | 512K (per core) | 512K (per core) |
| L3 cache | 0 KB | 0 KB |
| Chip lithography | 22 nm | 45 nm |
| Die size | no data | 66 mm2 |
| Maximum core temperature | 105 °C | 100 °C |
| Number of transistors | no data | 123 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | No | No |
Compatibility
Information on Celeron N2820 and Atom N455 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 | FCBGA559 |
| Power consumption (TDP) | 7.5 Watt | 6.5 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Celeron N2820 and Atom N455. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE2, Intel® SSE3, Intel® SSSE3 |
| AES-NI | - | no data |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | - | - |
| Hyper-Threading Technology | - | + |
| Idle States | + | no data |
| Thermal Monitoring | no data | + |
| Demand Based Switching | no data | - |
| Smart Connect | + | no data |
| Status | Discontinued | Discontinued |
| RST | - | no data |
Security technologies
Celeron N2820 and Atom N455 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | - |
| EDB | + | + |
| Identity Protection | - | no data |
| Anti-Theft | - | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Celeron N2820 and Atom N455 are enumerated here.
| VT-d | - | - |
| VT-x | + | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Celeron N2820 and Atom N455. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3 |
| Maximum memory size | 8 GB | 2 GB |
| Max memory channels | 2 | 1 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel® HD Graphics for Intel Atom® Processor Z3700 Series | Intel GMA 3150 |
| Graphics max frequency | 756 MHz | no data |
Graphics interfaces
Available interfaces and connections of Celeron N2820 and Atom N455 integrated GPUs.
| Number of displays supported | 2 | no data |
Peripherals
Specifications and connection of peripherals supported by Celeron N2820 and Atom N455.
| PCIe version | 2.0 | no data |
| PCI Express lanes | 4 | 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 |
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.
Benchmark coverage: 68%
Celeron N2820 outperforms Atom N455 by 160% in Passmark.
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.
Benchmark coverage: 42%
Celeron N2820 outperforms Atom N455 by 281% in GeekBench 5 Single-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.
Benchmark coverage: 42%
Celeron N2820 outperforms Atom N455 by 345% in GeekBench 5 Multi-Core.
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.
Benchmark coverage: 20%
Celeron N2820 outperforms Atom N455 by 88% in Cinebench 10 32-bit single-core.
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.
Benchmark coverage: 19%
Celeron N2820 outperforms Atom N455 by 133% in Cinebench 10 32-bit multi-core.
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.
Benchmark coverage: 19%
Celeron N2820 outperforms Atom N455 by 189% in 3DMark06 CPU.
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.
Benchmark coverage: 18%
Atom N455 outperforms Celeron N2820 by 146% in wPrime 32.
Pros & cons summary
| Recency | 1 December 2013 | 1 June 2010 |
| Physical cores | 2 | 1 |
| Cost | $107 | $64 |
| Chip lithography | 22 nm | 45 nm |
| Power consumption (TDP) | 7 Watt | 6 Watt |
We couldn't decide between Celeron N2820 and Atom N455. We've got no test results to judge.
Should you still have questions on choice between Celeron N2820 and Atom N455, ask them in Comments section, and we shall answer.
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