Celeron 3855U vs A4 Micro-6400T
Aggregate performance score
Celeron 3855U outperforms A4 Micro-6400T by a moderate 13% based on our aggregate benchmark results.
Primary details
Comparing A4 Micro-6400T and Celeron 3855U processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2721 | 2634 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | AMD A-Series | Intel Celeron |
| Power efficiency | 14.24 | 4.83 |
| Architecture codename | Mullins (2014) | Skylake (2015−2016) |
| Release date | 29 April 2014 (10 years ago) | 15 August 2015 (9 years ago) |
| Launch price (MSRP) | no data | $107 |
Detailed specifications
A4 Micro-6400T and Celeron 3855U 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 GHz | 1.6 GHz |
| Boost clock speed | 1.6 GHz | 1.6 GHz |
| Bus type | no data | OPI |
| Bus rate | no data | 4 GT/s |
| Multiplier | no data | 16 |
| L1 cache | no data | 128 KB |
| L2 cache | 2048 KB | 512 KB |
| L3 cache | no data | 2 MB |
| Chip lithography | 28 nm | 14 nm |
| Die size | no data | 98.57 mm2 |
| Maximum core temperature | no data | 100 °C |
| Number of transistors | no data | 1750 Million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on A4 Micro-6400T and Celeron 3855U 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 | no data | 1 (Uniprocessor) |
| Socket | FT3b | FCBGA1356 |
| Power consumption (TDP) | 4.5 Watt | 15 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by A4 Micro-6400T and Celeron 3855U. You'll probably need this information if you require some particular technology.
| Instruction set extensions | 86x SSE (1, 2, 3, 3S, 4.1, 4.2, 4A),-64, AES, AVX | Intel® SSE4.1, Intel® SSE4.2 |
| AES-NI | + | + |
| FMA | FMA4 | - |
| AVX | + | - |
| PowerNow | + | - |
| PowerGating | + | - |
| VirusProtect | + | - |
| 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 | + |
| Smart Response | no data | + |
Security technologies
A4 Micro-6400T and Celeron 3855U technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | - |
| EDB | no data | + |
| Secure Key | no data | + |
| Identity Protection | - | + |
| SGX | no data | Yes with Intel® ME |
| OS Guard | no data | - |
Virtualization technologies
Virtual machine speed-up technologies supported by A4 Micro-6400T and Celeron 3855U are enumerated here.
| AMD-V | + | - |
| VT-d | no data | + |
| VT-x | no data | + |
| EPT | no data | + |
| IOMMU 2.0 | + | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by A4 Micro-6400T and Celeron 3855U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3-1333 | DDR4-1866/2133, LPDDR3-1600/1866, DDR3L-1333/1600 |
| Maximum memory size | no data | 32 GB |
| Max memory channels | 1 | 2 |
| Maximum memory bandwidth | no data | 34.134 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card Compare | AMD Radeon R3 Graphics | Intel HD Graphics 510 |
| Max video memory | no data | 32 GB |
| Quick Sync Video | - | + |
| Clear Video HD | no data | + |
| Enduro | + | - |
| Switchable graphics | + | - |
| UVD | + | - |
| VCE | + | - |
| Graphics max frequency | no data | 900 MHz |
Graphics interfaces
Available interfaces and connections of A4 Micro-6400T and Celeron 3855U integrated GPUs.
| Number of displays supported | no data | 3 |
| eDP | no data | + |
| DisplayPort | + | + |
| HDMI | + | + |
| DVI | no data | + |
Graphics image quality
Maximum display resolutions supported by A4 Micro-6400T and Celeron 3855U integrated GPUs, including resolutions over different interfaces.
| 4K resolution support | no data | + |
| Max resolution over HDMI 1.4 | no data | 4096x2304@24Hz |
| Max resolution over eDP | no data | 4096x2304@60Hz |
| Max resolution over DisplayPort | no data | 4096x2304@60Hz |
| Max resolution over VGA | no data | N/A |
Graphics API support
APIs supported by A4 Micro-6400T and Celeron 3855U integrated GPUs, sometimes API versions are included.
| DirectX | DirectX® 12 | 12 |
| OpenGL | no data | 4.4 |
| Vulkan | + | - |
Peripherals
Specifications and connection of peripherals supported by A4 Micro-6400T and Celeron 3855U.
| PCIe version | 2.0 | 2.0 |
| PCI Express lanes | no data | 10 |
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 | 0.69 | 0.78 |
| Recency | 29 April 2014 | 15 August 2015 |
| Physical cores | 4 | 2 |
| Threads | 4 | 2 |
| Chip lithography | 28 nm | 14 nm |
| Power consumption (TDP) | 4 Watt | 15 Watt |
A4 Micro-6400T has 100% more physical cores and 100% more threads, and 275% lower power consumption.
Celeron 3855U, on the other hand, has a 13% higher aggregate performance score, an age advantage of 1 year, and a 100% more advanced lithography process.
The Celeron 3855U is our recommended choice as it beats the A4 Micro-6400T in performance tests.
Should you still have questions on choice between A4 Micro-6400T and Celeron 3855U, 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.
