Celeron B820 vs J3455
Aggregate performance score
Celeron J3455 outperforms Celeron B820 by a whopping 184% based on our aggregate benchmark results.
Primary details
Comparing Celeron J3455 and Celeron B820 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2190 | 2873 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.15 | no data |
| Market segment | Desktop processor | Laptop |
| Series | Intel Celeron | Intel Celeron |
| Power efficiency | 13.44 | 1.35 |
| Architecture codename | Apollo Lake (2014−2016) | Sandy Bridge (2011−2013) |
| Release date | 30 August 2016 (8 years ago) | 1 July 2012 (12 years ago) |
| Launch price (MSRP) | $107 | $86 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Celeron J3455 and Celeron B820 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 | 4 (Quad-Core) | 2 (Dual-core) |
| Threads | 4 | 2 |
| Base clock speed | 1.5 GHz | 1.7 GHz |
| Boost clock speed | 2.3 GHz | 1.7 GHz |
| Bus type | no data | DMI 2.0 |
| Bus rate | no data | 4 × 5 GT/s |
| Multiplier | 15 | 17 |
| L1 cache | no data | 128 KB |
| L2 cache | 2 MB | 512 KB |
| L3 cache | 0 KB | 2 MB (shared) |
| Chip lithography | 14 nm | 32 nm |
| Die size | no data | 131 mm2 |
| Maximum core temperature | 105 °C | 100 °C |
| Number of transistors | no data | 504 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Celeron J3455 and Celeron B820 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 | FCBGA1296 | FCPGA988,PGA988 |
| Power consumption (TDP) | 10 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Celeron J3455 and Celeron B820. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE4.1, Intel® SSE4.2 |
| AES-NI | + | - |
| FMA | - | + |
| Enhanced SpeedStep (EIST) | + | + |
| My WiFi | no data | - |
| Turbo Boost Technology | - | - |
| Hyper-Threading Technology | - | - |
| Idle States | + | + |
| Thermal Monitoring | + | + |
| Flex Memory Access | no data | + |
| Smart Response | - | no data |
| Demand Based Switching | no data | - |
| GPIO | + | no data |
| Smart Connect | - | no data |
| FDI | no data | + |
| Fast Memory Access | no data | + |
| HD Audio | + | no data |
| RST | - | no data |
Security technologies
Celeron J3455 and Celeron B820 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | - |
| EDB | + | + |
| Secure Boot | + | no data |
| Secure Key | + | no data |
| Identity Protection | + | - |
| OS Guard | - | no data |
| Anti-Theft | - | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Celeron J3455 and Celeron B820 are enumerated here.
| VT-d | + | - |
| VT-x | + | + |
| VT-i | - | no data |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Celeron J3455 and Celeron B820. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3L/LPDDR3 up to 1866 MT/s; LPDDR4 up to 2400 MT/s | DDR3 |
| Maximum memory size | 8 GB | 16 GB |
| Max memory channels | 2 | 2 |
| Maximum memory bandwidth | no data | 21.335 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel HD Graphics 500 | Intel® HD Graphics for 2nd Generation Intel® Processors |
| Max video memory | 8 GB | no data |
| Quick Sync Video | + | - |
| Clear Video | + | no data |
| Clear Video HD | + | - |
| Graphics max frequency | 750 MHz | 1.05 GHz |
| Execution Units | 12 | no data |
| InTru 3D | - | - |
Graphics interfaces
Available interfaces and connections of Celeron J3455 and Celeron B820 integrated GPUs.
| Number of displays supported | 3 | 2 |
| eDP | + | + |
| DisplayPort | + | + |
| HDMI | + | + |
| MIPI-DSI | + | no data |
| SDVO | no data | + |
| CRT | no data | + |
Graphics API support
APIs supported by Celeron J3455 and Celeron B820 integrated GPUs, sometimes API versions are included.
| DirectX | + | no data |
| OpenGL | + | no data |
Peripherals
Specifications and connection of peripherals supported by Celeron J3455 and Celeron B820.
| PCIe version | 2.0 | 2.0 |
| PCI Express lanes | 6 | 16 |
| USB revision | 2.0/3.0 | no data |
| Total number of SATA ports | 2 | no data |
| Max number of SATA 6 Gb/s Ports | 2 | no data |
| Number of USB ports | 8 | no data |
| Integrated LAN | - | no data |
| UART | + | 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.
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.
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.
Pros & cons summary
| Performance score | 1.42 | 0.50 |
| Recency | 30 August 2016 | 1 July 2012 |
| Physical cores | 4 | 2 |
| Threads | 4 | 2 |
| Chip lithography | 14 nm | 32 nm |
| Power consumption (TDP) | 10 Watt | 35 Watt |
Celeron J3455 has a 184% higher aggregate performance score, an age advantage of 4 years, 100% more physical cores and 100% more threads, a 128.6% more advanced lithography process, and 250% lower power consumption.
The Celeron J3455 is our recommended choice as it beats the Celeron B820 in performance tests.
Note that Celeron J3455 is a desktop processor while Celeron B820 is a notebook one.
Should you still have questions on choice between Celeron J3455 and Celeron B820, ask them in Comments section, and we shall answer.
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