Ryzen Embedded 7945 vs Opteron X3421
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2122 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Workstation | Desktop processor |
| Power efficiency | 5.30 | no data |
| Designer | AMD | AMD |
| Manufacturer | GlobalFoundries | TSMC |
| Architecture codename | Excavator (2017−2018) | Raphael (2023−2025) |
| Release date | 10 June 2017 (8 years ago) | 14 November 2023 (1 year ago) |
Detailed specifications
Opteron X3421 and Ryzen Embedded 7945 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) | 12 (Dodeca-Core) |
| Threads | 4 | 24 |
| Base clock speed | 2.1 GHz | 3.7 GHz |
| Boost clock speed | 3.4 GHz | 5.4 GHz |
| L1 cache | 160 KB | 64 KB (per core) |
| L2 cache | 2 MB (shared) | 1 MB (per core) |
| L3 cache | no data | 64 MB (shared) |
| Chip lithography | 28 nm | 5 nm |
| Die size | 250 mm2 | 2x 71 mm2 |
| Maximum case temperature (TCase) | 82 °C | 47 °C |
| Number of transistors | 3,100 million | 13,140 million |
| 64 bit support | + | + |
Compatibility
Information on Opteron X3421 and Ryzen Embedded 7945 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 | AM5 |
| Power consumption (TDP) | 15 Watt | 65 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Opteron X3421 and Ryzen Embedded 7945. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| FMA | + | - |
| AVX | + | + |
| Precision Boost 2 | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Opteron X3421 and Ryzen Embedded 7945 are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Opteron X3421 and Ryzen Embedded 7945. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 | DDR5 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Radeon Rx Series 8CU | AMD Radeon Graphics |
Peripherals
Specifications and connection of peripherals supported by Opteron X3421 and Ryzen Embedded 7945.
| PCIe version | 3.0 | 5.0 |
| PCI Express lanes | 8 | 24 |
Pros & cons summary
| Recency | 10 June 2017 | 14 November 2023 |
| Physical cores | 4 | 12 |
| Threads | 4 | 24 |
| Chip lithography | 28 nm | 5 nm |
| Power consumption (TDP) | 15 Watt | 65 Watt |
Opteron X3421 has 333.3% lower power consumption.
Ryzen Embedded 7945, on the other hand, has an age advantage of 6 years, 200% more physical cores and 500% more threads, and a 460% more advanced lithography process.
We couldn't decide between AMD Opteron X3421 and AMD Ryzen Embedded 7945. We've got no test results to judge.
Be aware that Opteron X3421 is a server/workstation processor while Ryzen Embedded 7945 is a desktop one.
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