AMD A9-9420 SoC
AMD processor specifications and benchmark scores
Integrated GPUAt a Glance
AMDAMD A9-9420 SoC Specifications
A9-9420 SoC Core Configuration
Processing cores and threading
The AMD A9-9420 SoC features 2 physical cores and 2 threads, which directly impacts multi-threaded performance in CPU benchmarks. More cores allow the processor to handle parallel workloads efficiently, improving performance in video editing, 3D rendering, and multitasking scenarios. Thread count determines how many simultaneous tasks the CPU can process, with higher thread counts benefiting productivity applications and content creation workflows.
A9-9420 SoC Clock Speeds
Base and boost frequencies
Clock speed is a critical factor in A9-9420 SoC benchmark performance, measured in GHz. The base clock represents the guaranteed operating frequency, while the boost clock indicates maximum single-core performance under optimal conditions. Higher clock speeds translate to faster single-threaded performance, which is essential for gaming and applications that don't fully utilize multiple cores. The A9-9420 SoC by AMD can dynamically adjust its frequency based on workload and thermal headroom.
AMD's A9-9420 SoC Cache Hierarchy
L1, L2, L3 cache sizes
Cache memory is ultra-fast storage built directly into the A9-9420 SoC processor die. L1 cache provides the fastest access for frequently used data, while L2 and L3 caches offer progressively larger storage with slightly higher latency. Larger cache sizes significantly improve CPU benchmark scores by reducing memory access times. The A9-9420 SoC's cache configuration is optimized for both gaming performance and productivity workloads, minimizing data fetch delays during intensive computations.
Excavator Architecture & Process
Manufacturing and design details
The AMD A9-9420 SoC is built on AMD's 28 nm manufacturing process, which determines power efficiency and thermal characteristics. Smaller process nodes allow for more transistors in the same space, enabling higher performance per watt. The architecture defines how the processor handles instructions and manages data flow, directly impacting benchmark results across different workload types. Modern CPU architectures like the one in A9-9420 SoC incorporate advanced branch prediction and out-of-order execution for optimal performance.
Excavator Instruction Set Features
Supported CPU instructions and extensions
The A9-9420 SoC by AMD supports various instruction set extensions that enable optimized performance for specific workloads. SIMD instructions like SSE and AVX accelerate multimedia, scientific computing, and AI workloads by processing multiple data points simultaneously. Features like AES-NI provide hardware-accelerated encryption, while AVX-512 (if supported) enables advanced vector processing for data centers and high-performance computing. These instruction sets are critical for software compatibility and performance in modern applications.
A9-9420 SoC Power & Thermal
TDP and power specifications
The AMD A9-9420 SoC has a TDP (Thermal Design Power) of 15W, indicating the cooling solution required for sustained operation. TDP affects both system power consumption and the type of cooler needed. Lower TDP processors are ideal for compact builds and laptops, while higher TDP chips typically offer better sustained performance in demanding CPU benchmarks. Understanding power requirements helps ensure your system can deliver consistent performance without thermal throttling.
AMD Socket FT4 Platform & Socket
Compatibility information
The A9-9420 SoC uses the AMD Socket FT4 socket, which determines motherboard compatibility. Choosing the right platform is essential for building a system around this processor. The socket type also influences available features like PCIe lanes, memory support, and upgrade paths. When comparing CPU benchmarks, ensure you're looking at processors compatible with your existing or planned motherboard to make informed purchasing decisions.
AMD Socket FT4 Memory Support
RAM compatibility and speeds
Memory support specifications for the A9-9420 SoC define which RAM types and speeds are compatible. Faster memory can significantly improve CPU benchmark performance, especially in memory-intensive applications and gaming. The memory controller integrated into the A9-9420 SoC determines maximum supported speeds and channels. Dual-channel or quad-channel memory configurations can double or quadruple memory bandwidth, providing noticeable performance gains in content creation and scientific workloads.
AMD's A9-9420 SoC Integrated Graphics
Built-in GPU specifications
The AMD A9-9420 SoC includes integrated graphics, eliminating the need for a dedicated GPU in basic computing scenarios. Integrated graphics are ideal for office productivity, video playback, and light gaming. While not designed for demanding GPU benchmarks, the iGPU in the A9-9420 SoC provides hardware video encoding and decoding capabilities. This makes the processor suitable for compact builds, HTPCs, and systems where power efficiency is prioritized over gaming performance.
A9-9420 SoC Product Information
Release and pricing details
The AMD A9-9420 SoC is manufactured by AMD and represents their commitment to delivering competitive CPU performance. Understanding the release date and pricing helps contextualize benchmark comparisons with other processors from the same generation. Launch pricing provides a baseline for evaluating value, though street prices often differ. Whether you're building a new system or upgrading, the A9-9420 SoC by AMD offers a specific balance of performance, features, and cost within AMD's product lineup.
A9-9420 SoC Benchmark Scores
No benchmark data available for this CPU.
About AMD A9-9420 SoC
The AMD A9-9420 SoC is a mobile processor built on the Excavator architecture, codenamed Stoney Ridge, and released on May 30, 2016. It pairs two cores with two threads, running at a base clock of 3.00 GHz and a boost clock of 3.60 GHz. The database places this chip at the 50th percentile among all CPUs, indicating a median performance level. This analysis examines its platform compatibility, power characteristics, and workload implications using only the recorded specifications, since no benchmark scores or nearest-rival data are available.
Platform and Compatibility
The A9-9420 uses the AMD Socket FT4, a BGA-style socket that is typically soldered directly to the motherboard. This makes the processor non-upgradeable; users cannot swap it for a different chip. The SoC is built on the Excavator architecture with a 28 nm process from GlobalFoundries, containing 1,200 million transistors on a 125 mm² die. The part number AM9420AYN23AC identifies the specific SKU.
Memory support is limited to DDR4 with a single-channel interface, delivering a maximum bandwidth of 17.1 GB/s. There is no ECC memory support, which is expected for a mobile consumer chip. The integrated memory controller is the sole path for system RAM, and the single-channel configuration reduces available bandwidth compared to dual-channel designs. This can become a bottleneck for memory-sensitive workloads, especially when the integrated graphics competes for the same bandwidth.
For expansion, the CPU provides 8 PCIe Gen 3 lanes. These lanes are available only for CPU-attached devices, such as an NVMe SSD or a discrete GPU, though the mobile form factor typically limits such upgrades. The combination of a fixed socket, single-channel memory, and limited PCIe lanes means the platform is designed for a closed, compact system rather than user-configurable builds. The production status is end-of-life, so no future firmware or driver updates are expected.
Power and Thermals
The A9-9420 has a TDP of 15 W, placing it in the ultra-low-power segment. This low power envelope is typical for thin-and-light laptops, fanless tablets, or small-form-factor embedded systems. The 28 nm process node is relatively old, but the low TDP allows for passive cooling in many chassis, or a small, quiet fan in others. The thermal design suggests that sustained performance will be limited by the cooling solution, but the chip’s modest specifications mean it does not generate excessive heat.
Given the 15 W TDP, the chip is not intended for high-performance computing. It is suited for devices where battery life and portability are prioritized over raw speed. The low power draw also implies that the integrated Radeon R5 graphics, with its 3 compute units, must operate within the same power budget, limiting its ability to run demanding 3D applications.
How It Compares
The database does not list any nearest rivals for the A9-9420, so a direct comparison to specific competing processors is not possible. The only comparative metric available is the 50th percentile ranking among all CPUs in the database. This indicates that, based on the database’s internal scoring (which currently shows an average benchmark score of 0), the chip sits exactly at the median of the performance distribution. In practical terms, this means half of the processors in the database are expected to outperform it, and half are expected to be slower. Without rival scores, we cannot calculate percentage deltas, but the percentile alone suggests a middle-of-the-road position in the overall CPU landscape.
The lack of nearest-rival data is notable. It may reflect the chip’s age and niche positioning, as it was a low-end mobile part from 2016. Its performance class would likely place it near other dual-core, low-power processors of that era, but without explicit names, we can only rely on the percentile as a rough indicator.
FAQ
Q: What socket does the AMD A9-9420 use?
A: It uses the AMD Socket FT4, which is a BGA-style socket designed for soldered mobile processors.
Q: Does the A9-9420 support ECC memory?
A: No, ECC memory is not supported. The chip only supports non-ECC DDR4 memory.
Q: What is the maximum memory bandwidth?
A: The memory bus is single-channel DDR4 with a bandwidth of 17.1 GB/s.
Q: How many PCIe lanes does the CPU provide?
A: It provides 8 PCIe Gen 3 lanes, available only for CPU-attached devices.
Q: Is the A9-9420 still in production?
A: No, the production status is end-of-life. It was released on May 30, 2016, and is no longer manufactured.
Q: What integrated graphics does it include?
A: It includes a Radeon R5 GPU with 3 compute units.
Benchmark Performance
The benchmark data for the A9-9420 is sparse. The database lists an average benchmark score of 0, which likely indicates that no measured performance results have been submitted or recorded for this processor. The percentile ranking of 50 is based on the database’s overall CPU population, but without a non-zero score, the percentile may reflect an assumed position rather than a tested one. Consequently, we cannot report exact performance deltas against any rivals, nor can we derive multi-core or single-thread scores.
What we can infer comes from the hardware specifications. The dual-core, dual-thread design with no SMT means the chip can execute only two threads concurrently. The base clock of 3.00 GHz and boost clock of 3.60 GHz are modest by modern standards, but for a 2016 low-power part, they were adequate for basic tasks. The cache hierarchy is small: 160 KB of L1 and 1 MB of shared L2 cache. This limited cache, combined with single-channel memory, will restrict performance in data-intensive applications. The integrated Radeon R5 with 3 compute units is a minimal GPU, suitable for video playback and very light gaming at low resolutions.
Given the absence of benchmark scores, the 50th percentile is the only quantitative measure. It suggests that if the chip were benchmarked, it would likely land near the middle of the distribution, but this is an assumption based on the database’s ranking, not a verified result. The lack of data makes it difficult to position the A9-9420 precisely against its contemporaries.
Who Should Consider It
The A9-9420 is best suited for users whose computing needs are basic and whose priorities are portability and battery life. With two cores and two threads, it can handle web browsing, email, word processing, and streaming video without significant strain. The integrated Radeon R5 graphics can decode modern video formats and run older or less demanding games at low settings, though the 3 compute units limit graphical performance. The 15 W TDP makes it ideal for thin-and-light laptops or fanless mini-PCs where power consumption is critical.
Content creation, such as video editing, 3D rendering, or heavy photo manipulation, is not recommended. The lack of multi-threading and the single-channel memory will cause these workloads to struggle. Similarly, multitasking across many applications will quickly exhaust the available threads, leading to noticeable slowdowns. Office productivity, on the other hand, is well within its capabilities, provided the user does not run dozens of browser tabs or large spreadsheets simultaneously.
The chip’s end-of-life status means it is no longer available in new systems. However, it may appear in refurbished or second-hand devices. For someone seeking a low-cost, energy-efficient machine for basic use, the A9-9420 could suffice, but for any demanding work, a more modern processor would be necessary.
Single-Thread vs Multi-Thread Behavior
The A9-9420 has two cores and two threads, meaning it lacks simultaneous multithreading. Each core handles exactly one thread. This configuration places a hard limit on parallel execution: only two threads can run at any given moment. For single-threaded tasks, the boost clock of 3.60 GHz provides a reasonable amount of processing power, and the Excavator architecture, while older, can still handle typical office applications and web browsing without issue. The small L2 cache (1 MB) may cause occasional stalls when working with larger datasets, but for lightweight workloads, the impact is minimal.
Multi-threaded performance is severely constrained by the thread count. Applications that can utilize more than two cores will see no benefit beyond the two available threads. For example, a video encoding task that scales across multiple cores would effectively run at a fraction of its potential speed. The single-channel memory further compounds this issue because the memory bandwidth of 17.1 GB/s is shared between the CPU and the integrated graphics, reducing the effective bandwidth available to the cores. In multi-threaded scenarios, the memory subsystem becomes a bottleneck even before the thread limit is reached.
The contrast between single-thread and multi-thread behavior is stark. While the chip can feel responsive in everyday use that relies on single-threaded interactions, any workload that tries to leverage multiple cores will quickly expose the limitations. The 50th percentile ranking likely reflects this balance: the chip is not exceptionally fast in either category, but it is not catastrophically slow either. For users who prioritize a simple, low-power device, the A9-9420’s single-thread performance is adequate, but its multi-thread capabilities are best ignored.
The Intel Equivalent of A9-9420 SoC
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