Ryzen 5 8400F vs Athlon 300U
Aggregate performance score
Ryzen 5 8400F outperforms Athlon 300U by a whopping 521% based on our aggregate benchmark results.
Primary details
Comparing Athlon 300U and Ryzen 5 8400F processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1758 | 459 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 59.85 |
| Market segment | Laptop | Desktop processor |
| Series | AMD Athlon | no data |
| Power efficiency | 15.33 | 21.98 |
| Architecture codename | Raven Ridge 2 (2019) | Phoenix (2023−2024) |
| Release date | 6 January 2019 (5 years ago) | 1 April 2024 (less than a year ago) |
| Launch price (MSRP) | no data | $170 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Athlon 300U 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 | 2 (Dual-core) | 6 (Hexa-Core) |
| Threads | 4 | 12 |
| Base clock speed | 2.4 GHz | 4.2 GHz |
| Boost clock speed | 3.3 GHz | 4.7 GHz |
| Bus type | PCIe 3.0 | no data |
| Multiplier | 24 | no data |
| L1 cache | 128K (per core) | 64 KB (per core) |
| L2 cache | 512K (per core) | 1 MB (per core) |
| L3 cache | 4 MB (shared) | 16 MB (shared) |
| Chip lithography | 14 nm | 4 nm |
| Die size | 209.78 mm2 | 178 mm2 |
| Number of transistors | 4940 Million | 25,000 million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | no data |
| Unlocked multiplier | - | + |
Compatibility
Information on Athlon 300U 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 (Uniprocessor) | 1 |
| Socket | FP5 | AM5 |
| Power consumption (TDP) | 15 Watt | 65 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Athlon 300U and Ryzen 5 8400F. You'll probably need this information if you require some particular technology.
| Instruction set extensions | XFR, FMA3, SSE 4.2, AVX2, SMT | no data |
| AES-NI | + | + |
| AVX | + | + |
| Precision Boost 2 | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Athlon 300U and Ryzen 5 8400F are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Athlon 300U and Ryzen 5 8400F. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 Dual-channel | DDR5 |
| Maximum memory size | 64 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 38.397 GB/s | no data |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | AMD Radeon RX Vega 3 | N/A |
Peripherals
Specifications and connection of peripherals supported by Athlon 300U and Ryzen 5 8400F.
| PCIe version | 3.0 | 4.0 |
| PCI Express lanes | 12 | 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 | 2.43 | 15.10 |
| Recency | 6 January 2019 | 1 April 2024 |
| Physical cores | 2 | 6 |
| Threads | 4 | 12 |
| Chip lithography | 14 nm | 4 nm |
| Power consumption (TDP) | 15 Watt | 65 Watt |
Athlon 300U has 333.3% lower power consumption.
Ryzen 5 8400F, on the other hand, has a 521.4% higher aggregate performance score, an age advantage of 5 years, 200% more physical cores and 200% more threads, and a 250% more advanced lithography process.
The Ryzen 5 8400F is our recommended choice as it beats the Athlon 300U in performance tests.
Be aware that Athlon 300U is a notebook processor while Ryzen 5 8400F is a desktop one.
Should you still have questions on choice between Athlon 300U and Ryzen 5 8400F, ask them in Comments section, and we shall answer.
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