Atom D2500 vs Celeron B820
Primary details
Comparing Celeron B820 and Atom D2500 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2870 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Celeron | Intel Atom |
| Power efficiency | 1.35 | no data |
| Architecture codename | Sandy Bridge (2011−2013) | Cedarview (2011−2012) |
| Release date | 1 July 2012 (12 years ago) | 1 November 2011 (13 years ago) |
| Launch price (MSRP) | $86 | no data |
Detailed specifications
Celeron B820 and Atom D2500 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 | 1.86 GHz |
| Boost clock speed | 1.7 GHz | 1.87 GHz |
| Bus type | DMI 2.0 | no data |
| Bus rate | 4 × 5 GT/s | no data |
| Multiplier | 17 | no data |
| L1 cache | 64K (per core) | 64 KB (per core) |
| L2 cache | 256K (per core) | 512K (per core) |
| L3 cache | 2 MB (shared) | 0 KB |
| Chip lithography | 32 nm | 32 nm |
| Die size | 131 mm2 | 66 mm2 |
| Maximum core temperature | 100 °C | 100 °C |
| Number of transistors | 504 million | 176 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Celeron B820 and Atom D2500 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) | 1 |
| Socket | FCPGA988,PGA988 | FCBGA559 |
| Power consumption (TDP) | 35 Watt | 10 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Celeron B820 and Atom D2500. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2 | Intel® SSE2, Intel® SSE3, Intel® SSSE3 |
| FMA | + | - |
| Enhanced SpeedStep (EIST) | + | - |
| My WiFi | - | no data |
| Turbo Boost Technology | - | - |
| Hyper-Threading Technology | - | + |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
| Flex Memory Access | + | no data |
| Demand Based Switching | - | - |
| PAE | no data | 36 Bit |
| FDI | + | no data |
| Fast Memory Access | + | no data |
| AMT | no data | - |
| HD Audio | no data | + |
Security technologies
Celeron B820 and Atom D2500 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | no data |
| EDB | + | + |
| Anti-Theft | - | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Celeron B820 and Atom D2500 are enumerated here.
| VT-d | - | - |
| VT-x | + | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Celeron B820 and Atom D2500. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3 |
| Maximum memory size | 16 GB | 4 GB |
| Max memory channels | 2 | 1 |
| Maximum memory bandwidth | 21.335 GB/s | 6.4 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel® HD Graphics for 2nd Generation Intel® Processors | Intel GMA |
| Graphics max frequency | 1.05 GHz | no data |
Graphics interfaces
Available interfaces and connections of Celeron B820 and Atom D2500 integrated GPUs.
| Number of displays supported | 2 | 2 |
| eDP | + | no data |
| DisplayPort | + | - |
| HDMI | + | - |
| SDVO | + | no data |
| CRT | + | no data |
Peripherals
Specifications and connection of peripherals supported by Celeron B820 and Atom D2500.
| PCIe version | 2.0 | no data |
| PCI Express lanes | 16 | 4 |
| Total number of SATA ports | no data | 2 |
| Number of USB ports | no data | 8 |
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.
Pros & cons summary
| Recency | 1 July 2012 | 1 November 2011 |
| Power consumption (TDP) | 35 Watt | 10 Watt |
Celeron B820 has an age advantage of 8 months.
Atom D2500, on the other hand, has 250% lower power consumption.
We couldn't decide between Celeron B820 and Atom D2500. We've got no test results to judge.
Should you still have questions on choice between Celeron B820 and Atom D2500, ask them in Comments section, and we shall answer.
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