Ryzen 5 40 vs Opteron X3421
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2139 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Workstation | Laptop |
| Power efficiency | 5.31 | no data |
| Designer | AMD | AMD |
| Manufacturer | GlobalFoundries | TSMC |
| Architecture codename | Excavator (2017−2018) | Mendocino (2025) |
| Release date | 10 June 2017 (8 years ago) | 1 October 2025 (less than a year ago) |
Detailed specifications
Opteron X3421 and Ryzen 5 40 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) | 4 (Quad-Core) |
| Threads | 4 | 8 |
| Base clock speed | 2.1 GHz | 2.8 GHz |
| Boost clock speed | 3.4 GHz | 4.3 GHz |
| L1 cache | 160 KB | 64 KB (per core) |
| L2 cache | 2 MB (shared) | 512 KB (per core) |
| L3 cache | no data | 4 MB (shared) |
| Chip lithography | 28 nm | 6 nm |
| Die size | 250 mm2 | 100 mm2 |
| Maximum case temperature (TCase) | 82 °C | no data |
| Number of transistors | 3,100 million | no data |
| 64 bit support | + | + |
Compatibility
Information on Opteron X3421 and Ryzen 5 40 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 | FP4 | FT6 |
| Power consumption (TDP) | 15 Watt | 15 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Opteron X3421 and Ryzen 5 40. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| FMA | + | - |
| AVX | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Opteron X3421 and Ryzen 5 40 are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Opteron X3421 and Ryzen 5 40. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 | LPDDR5 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Radeon Rx Series 8CU | AMD Radeon 610M |
Peripherals
Specifications and connection of peripherals supported by Opteron X3421 and Ryzen 5 40.
| PCIe version | 3.0 | 3.0 |
| PCI Express lanes | 8 | 4 |
Pros & cons summary
| Recency | 10 June 2017 | 1 October 2025 |
| Threads | 4 | 8 |
| Chip lithography | 28 nm | 6 nm |
Ryzen 5 40 has an age advantage of 8 years, 100% more threads, and a 366.7% more advanced lithography process.
We couldn't decide between AMD Opteron X3421 and AMD Ryzen 5 40. We've got no test results to judge.
Be aware that Opteron X3421 is a server/workstation processor while Ryzen 5 40 is a notebook one.
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