Celeron N2840 vs Athlon II X2 255
Primary details
Comparing Athlon II X2 255 and Celeron N2840 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 2558 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.02 | no data |
| Market segment | Desktop processor | Laptop |
| Series | no data | Intel Celeron |
| Architecture codename | Regor (2009−2013) | Bay Trail-M (2013−2014) |
| Release date | 25 January 2010 (14 years ago) | 22 May 2014 (10 years ago) |
| Launch price (MSRP) | $60 | no data |
| Current price | $16.55 (0.3x MSRP) | $287 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Athlon II X2 255 and Celeron N2840 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) | 2 (Dual-core) |
| Threads | 2 | 2 |
| Base clock speed | 3.1 GHz | 2.16 GHz |
| Boost clock speed | 3.1 GHz | 2.58 GHz |
| L1 cache | 128 KB | 56K (per core) |
| L2 cache | 1 MB | 512K (per core) |
| L3 cache | 0 KB | 0 KB |
| Chip lithography | 45 nm | 22 nm |
| Die size | 117 mm2 | no data |
| Maximum core temperature | no data | 100 °C |
| Number of transistors | 410 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | No | No |
Compatibility
Information on Athlon II X2 255 and Celeron N2840 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 | AM3 | FCBGA1170 |
| Power consumption (TDP) | 65 Watt | 7.5 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Athlon II X2 255 and Celeron N2840. You'll probably need this information if you require some particular technology.
| AES-NI | no data | - |
| Enhanced SpeedStep (EIST) | no data | + |
| Turbo Boost Technology | no data | - |
| Hyper-Threading Technology | no data | - |
| Idle States | no data | + |
| Smart Connect | no data | + |
| Status | no data | Discontinued |
Security technologies
Athlon II X2 255 and Celeron N2840 technologies aimed at improving security, for example, by protecting against hacks.
| EDB | no data | + |
| Secure Key | no data | + |
| Anti-Theft | no data | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Athlon II X2 255 and Celeron N2840 are enumerated here.
| VT-d | no data | - |
| VT-x | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Athlon II X2 255 and Celeron N2840. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3 |
| Maximum memory size | no data | 8 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 21.32 GB/s |
| ECC memory support | no data | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Intel® HD Graphics for Intel Atom® Processor Z3700 Series |
| Quick Sync Video | no data | + |
| Graphics max frequency | no data | 792 MHz |
Graphics interfaces
Available interfaces and connections of Athlon II X2 255 and Celeron N2840 integrated GPUs.
| Number of displays supported | no data | 2 |
Peripherals
Specifications and connection of peripherals supported by Athlon II X2 255 and Celeron N2840.
| PCIe version | 2.0 | 2.0 |
| PCI Express lanes | no data | 4 |
| USB revision | no data | 3.0 and 2.0 |
| Total number of SATA ports | no data | 2 |
| Number of USB ports | no data | 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.
Benchmark coverage: 68%
Athlon II X2 255 outperforms Celeron N2840 by 99% 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%
Athlon II X2 255 outperforms Celeron N2840 by 83% 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%
Athlon II X2 255 outperforms Celeron N2840 by 81% in GeekBench 5 Multi-Core.
Pros & cons summary
| Recency | 25 January 2010 | 22 May 2014 |
| Chip lithography | 45 nm | 22 nm |
| Power consumption (TDP) | 65 Watt | 7 Watt |
We couldn't decide between Athlon II X2 255 and Celeron N2840. We've got no test results to judge.
Note that Athlon II X2 255 is a desktop processor while Celeron N2840 is a notebook one.
Should you still have questions on choice between Athlon II X2 255 and Celeron N2840, ask them in Comments section, and we shall answer.
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