Atom C3950 vs Celeron B820
Primary details
Comparing Celeron B820 and Atom C3950 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2869 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Server |
| Series | Intel Celeron | Intel Atom |
| Power efficiency | 1.35 | no data |
| Architecture codename | Sandy Bridge (2011−2013) | Goldmont (2016−2017) |
| Release date | 1 July 2012 (12 years ago) | 15 August 2017 (7 years ago) |
| Launch price (MSRP) | $86 | $389 |
Detailed specifications
Celeron B820 and Atom C3950 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) | 16 (Hexadeca-Core) |
| Threads | 2 | 16 |
| Base clock speed | 1.7 GHz | 1.7 GHz |
| Boost clock speed | 1.7 GHz | 2.2 GHz |
| Bus type | DMI 2.0 | no data |
| Bus rate | 4 × 5 GT/s | no data |
| Multiplier | 17 | 17 |
| L1 cache | 64K (per core) | 896 KB |
| L2 cache | 256K (per core) | 16 MB |
| L3 cache | 2 MB (shared) | 16 MB |
| Chip lithography | 32 nm | 14 nm |
| Die size | 131 mm2 | no data |
| Maximum core temperature | 100 °C | 78 °C |
| Number of transistors | 504 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Celeron B820 and Atom C3950 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 (Uniprocessor) |
| Socket | FCPGA988,PGA988 | FCBGA1310 |
| Power consumption (TDP) | 35 Watt | 24 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Celeron B820 and Atom C3950. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2 | no data |
| AES-NI | - | + |
| FMA | + | - |
| Enhanced SpeedStep (EIST) | + | + |
| QuickAssist | no data | - |
| My WiFi | - | no data |
| Turbo Boost Technology | - | 2.0 |
| Hyper-Threading Technology | - | - |
| 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 Atom C3950 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | no data |
| EDB | + | + |
| Secure Boot | no data | + |
| Secure Key | no data | + |
| SGX | no data | - |
| OS Guard | no data | + |
| Anti-Theft | - | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Celeron B820 and Atom C3950 are enumerated here.
| VT-d | - | + |
| VT-x | + | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Celeron B820 and Atom C3950. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR4: 2400 |
| Maximum memory size | 16 GB | 256 GB |
| Max memory channels | 2 | 2 |
| Maximum memory bandwidth | 21.335 GB/s | 38.397 GB/s |
| ECC memory support | - | + |
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 Atom C3950 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 Atom C3950.
| PCIe version | 2.0 | 3 |
| PCI Express lanes | 16 | 16 |
| USB revision | no data | 3 |
| Total number of SATA ports | no data | 16 |
| Max number of SATA 6 Gb/s Ports | no data | 16 |
| Number of USB ports | no data | 8 |
| Integrated LAN | no data | 2x10/2.5/1 GBE + 2x1 GBE |
Pros & cons summary
| Recency | 1 July 2012 | 15 August 2017 |
| Physical cores | 2 | 16 |
| Threads | 2 | 16 |
| Chip lithography | 32 nm | 14 nm |
| Power consumption (TDP) | 35 Watt | 24 Watt |
Atom C3950 has an age advantage of 5 years, 700% more physical cores and 700% more threads, a 128.6% more advanced lithography process, and 45.8% lower power consumption.
We couldn't decide between Celeron B820 and Atom C3950. We've got no test results to judge.
Be aware that Celeron B820 is a notebook processor while Atom C3950 is a server/workstation one.
Should you still have questions on choice between Celeron B820 and Atom C3950, ask them in Comments section, and we shall answer.
Similar processor comparisons
We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.
