Ryzen 5 8400F vs Atom N455
Aggregate performance score
Ryzen 5 8400F outperforms Atom N455 by a whopping 12650% based on our aggregate benchmark results.
Primary details
Comparing Atom N455 and Ryzen 5 8400F processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 3352 | 457 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 64.44 |
| Market segment | Laptop | Desktop processor |
| Series | Intel Atom | no data |
| Power efficiency | 1.62 | 22.26 |
| Architecture codename | Pinetrail (2009−2011) | Phoenix (2023−2024) |
| Release date | 1 June 2010 (14 years ago) | 1 April 2024 (less than a year ago) |
| Launch price (MSRP) | $64 | $170 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Atom N455 and Ryzen 5 8400F 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 | 1 (Single-Core) | 6 (Hexa-Core) |
| Threads | 2 | 12 |
| Base clock speed | 1.66 GHz | 4.2 GHz |
| Boost clock speed | 1.67 GHz | 4.7 GHz |
| Bus rate | 533 MHz | no data |
| L1 cache | 64 KB (per core) | 64 KB (per core) |
| L2 cache | 512K (per core) | 1 MB (per core) |
| L3 cache | 0 KB | 16 MB (shared) |
| Chip lithography | 45 nm | 4 nm |
| Die size | 66 mm2 | 178 mm2 |
| Maximum core temperature | 100 °C | no data |
| Number of transistors | 123 million | 25,000 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
| Unlocked multiplier | - | + |
Compatibility
Information on Atom N455 and Ryzen 5 8400F 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 | 1 |
| Socket | FCBGA559 | AM5 |
| Power consumption (TDP) | 6.5 Watt | 65 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Atom N455 and Ryzen 5 8400F. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE2, Intel® SSE3, Intel® SSSE3 | no data |
| AES-NI | - | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | + | no data |
| Turbo Boost Technology | - | no data |
| Hyper-Threading Technology | + | no data |
| Thermal Monitoring | + | - |
| Demand Based Switching | - | no data |
| Precision Boost 2 | no data | + |
Security technologies
Atom N455 and Ryzen 5 8400F technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | no data |
| EDB | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Atom N455 and Ryzen 5 8400F are enumerated here.
| AMD-V | - | + |
| VT-d | - | no data |
| VT-x | - | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Atom N455 and Ryzen 5 8400F. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR5 |
| Maximum memory size | 2 GB | no data |
| Max memory channels | 1 | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel GMA 3150 | N/A |
Peripherals
Specifications and connection of peripherals supported by Atom N455 and Ryzen 5 8400F.
| PCIe version | no data | 4.0 |
| PCI Express lanes | no data | 20 |
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 | 0.12 | 15.30 |
| Recency | 1 June 2010 | 1 April 2024 |
| Physical cores | 1 | 6 |
| Threads | 2 | 12 |
| Chip lithography | 45 nm | 4 nm |
| Power consumption (TDP) | 6 Watt | 65 Watt |
Atom N455 has 983.3% lower power consumption.
Ryzen 5 8400F, on the other hand, has a 12650% higher aggregate performance score, an age advantage of 13 years, 500% more physical cores and 500% more threads, and a 1025% more advanced lithography process.
The Ryzen 5 8400F is our recommended choice as it beats the Atom N455 in performance tests.
Be aware that Atom N455 is a notebook processor while Ryzen 5 8400F is a desktop one.
Should you still have questions on choice between Atom N455 and Ryzen 5 8400F, 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.
