Athlon II M340 vs Celeron B820
Aggregate performance score
Athlon II M340 outperforms Celeron B820 by a minimal 2% based on our aggregate benchmark results.
Primary details
Comparing Celeron B820 and Athlon II M340 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2869 | 2865 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Celeron | AMD Athlon II |
| Power efficiency | 1.35 | 1.38 |
| Architecture codename | Sandy Bridge (2011−2013) | Caspian (2009) |
| Release date | 1 July 2012 (12 years ago) | 10 September 2009 (15 years ago) |
| Launch price (MSRP) | $86 | no data |
Detailed specifications
Celeron B820 and Athlon II M340 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 | 1.7 GHz | no data |
| Boost clock speed | 1.7 GHz | 2.2 GHz |
| Bus type | DMI 2.0 | no data |
| Bus rate | 4 × 5 GT/s | 3200 MHz |
| Multiplier | 17 | no data |
| L1 cache | 64K (per core) | 128 KB |
| L2 cache | 256K (per core) | 1 MB |
| L3 cache | 2 MB (shared) | no data |
| Chip lithography | 32 nm | 45 nm |
| Die size | 131 mm2 | no data |
| Maximum core temperature | 100 °C | no data |
| Number of transistors | 504 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Celeron B820 and Athlon II M340 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 (Uniprocessor) | no data |
| Socket | FCPGA988,PGA988 | Socket S1 (S1g3) |
| Power consumption (TDP) | 35 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Celeron B820 and Athlon II M340. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2 | MMX, SSE, SSE2, SSE3, Enhanced 3DNow!, NX bit, AMD64, PowerNow!, AMD Virtualization |
| FMA | + | - |
| PowerNow | - | + |
| Enhanced SpeedStep (EIST) | + | no data |
| My WiFi | - | no data |
| Turbo Boost Technology | - | no data |
| Hyper-Threading Technology | - | no data |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
| Flex Memory Access | + | no data |
| Demand Based Switching | - | no data |
| FDI | + | no data |
| Fast Memory Access | + | no data |
Security technologies
Celeron B820 and Athlon II M340 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | no data |
| EDB | + | no data |
| Anti-Theft | - | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Celeron B820 and Athlon II M340 are enumerated here.
| VT-d | - | no data |
| VT-x | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Celeron B820 and Athlon II M340. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR2 |
| Maximum memory size | 16 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 21.335 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel® HD Graphics for 2nd Generation Intel® Processors | no data |
| Graphics max frequency | 1.05 GHz | no data |
Graphics interfaces
Available interfaces and connections of Celeron B820 and Athlon II M340 integrated GPUs.
| Number of displays supported | 2 | no data |
| eDP | + | no data |
| DisplayPort | + | - |
| HDMI | + | - |
| SDVO | + | no data |
| CRT | + | no data |
Peripherals
Specifications and connection of peripherals supported by Celeron B820 and Athlon II M340.
| PCIe version | 2.0 | no data |
| PCI Express lanes | 16 | 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.
Pros & cons summary
| Performance score | 0.52 | 0.53 |
| Recency | 1 July 2012 | 10 September 2009 |
| Chip lithography | 32 nm | 45 nm |
Celeron B820 has an age advantage of 2 years, and a 40.6% more advanced lithography process.
Athlon II M340, on the other hand, has a 1.9% higher aggregate performance score.
Given the minimal performance differences, no clear winner can be declared between Celeron B820 and Athlon II M340.
Should you still have questions on choice between Celeron B820 and Athlon II M340, ask them in Comments section, and we shall answer.
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