A9-9420e vs EPYC 4345P
Aggregate performance score
EPYC 4345P outperforms A9-9420e by a whopping 3296% based on our aggregate benchmark results.
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 262 | 2882 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 60.51 | no data |
| Market segment | Server | Laptop |
| Series | no data | AMD Bristol Ridge |
| Power efficiency | 34.77 | 4.44 |
| Designer | AMD | AMD |
| Manufacturer | TSMC | no data |
| Architecture codename | Grado (2025) | Stoney Ridge (2016−2019) |
| Release date | 13 May 2025 (recently) | 1 June 2018 (6 years ago) |
| Launch price (MSRP) | $329 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
EPYC 4345P and A9-9420e 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 | 8 (Octa-Core) | 2 (Dual-core) |
| Threads | 16 | 2 |
| Base clock speed | 3.8 GHz | no data |
| Boost clock speed | 5.5 GHz | no data |
| L1 cache | 80 KB (per core) | no data |
| L2 cache | 1 MB (per core) | 1 MB |
| L3 cache | 32 MB (shared) | no data |
| Chip lithography | 4 nm | 28 nm |
| Die size | 70.6 mm2 | 124.5 mm2 |
| Maximum core temperature | no data | 90 °C |
| Number of transistors | 8,315 million | 1200 Million |
| 64 bit support | + | + |
| Windows 11 compatibility | no data | - |
Compatibility
Information on EPYC 4345P and A9-9420e 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 | no data |
| Socket | AM5 | BGA |
| Power consumption (TDP) | 65 Watt | 15 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by EPYC 4345P and A9-9420e. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Virtualization, |
| AES-NI | + | - |
| AVX | + | - |
| Precision Boost 2 | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by EPYC 4345P and A9-9420e are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by EPYC 4345P and A9-9420e. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5 | DDR4 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | AMD Radeon Graphics | AMD Radeon R5 (Stoney Ridge) |
Peripherals
Specifications and connection of peripherals supported by EPYC 4345P and A9-9420e.
| PCIe version | 5.0 | no data |
| PCI Express lanes | 24 | no data |
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.
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. Other than that, Passmark measures multi-core performance.
Pros & cons summary
| Performance score | 23.43 | 0.69 |
| Integrated graphics card | 1.92 | 1.40 |
| Recency | 13 May 2025 | 1 June 2018 |
| Physical cores | 8 | 2 |
| Threads | 16 | 2 |
| Chip lithography | 4 nm | 28 nm |
| Power consumption (TDP) | 65 Watt | 15 Watt |
EPYC 4345P has a 3295.7% higher aggregate performance score, 37.1% faster integrated GPU, an age advantage of 6 years, 300% more physical cores and 700% more threads, and a 600% more advanced lithography process.
A9-9420e, on the other hand, has 333.3% lower power consumption.
The AMD EPYC 4345P is our recommended choice as it beats the AMD A9-9420e in performance tests.
Be aware that EPYC 4345P is a server/workstation processor while A9-9420e is a notebook one.
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