AMD A4-3420
AMD processor specifications and benchmark scores
Integrated GPUAt a Glance
AMDAMD A4-3420 Specifications
A4-3420 Core Configuration
Processing cores and threading
The AMD A4-3420 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.
A4-3420 Clock Speeds
Base and boost frequencies
Clock speed is a critical factor in A4-3420 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 A4-3420 by AMD can dynamically adjust its frequency based on workload and thermal headroom.
AMD's A4-3420 Cache Hierarchy
L1, L2, L3 cache sizes
Cache memory is ultra-fast storage built directly into the A4-3420 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 A4-3420's cache configuration is optimized for both gaming performance and productivity workloads, minimizing data fetch delays during intensive computations.
K10 Architecture & Process
Manufacturing and design details
The AMD A4-3420 is built on AMD's 32 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 A4-3420 incorporate advanced branch prediction and out-of-order execution for optimal performance.
K10 Instruction Set Features
Supported CPU instructions and extensions
The A4-3420 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.
Power & Thermal
TDP and power specifications
The AMD A4-3420 has a TDP (Thermal Design Power) of 65W, 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 FM1 Platform & Socket
Compatibility information
The A4-3420 uses the AMD Socket FM1 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 FM1 Memory Support
RAM compatibility and speeds
Memory support specifications for the A4-3420 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 A4-3420 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 A4-3420 Integrated Graphics
Built-in GPU specifications
The AMD A4-3420 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 A4-3420 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.
Product Information
Release and pricing details
The AMD A4-3420 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 A4-3420 by AMD offers a specific balance of performance, features, and cost within AMD's product lineup.
About AMD A4-3420
The AMD A4-3420 is a desktop processor built on the K10 architecture with the Llano codename, released on 2011-12-19. It pairs two physical cores running at 2.80 GHz with the Radeon HD 6410D integrated graphics, making it a compact entry-level part for Socket FM1 systems. The data sheet lists no boost clock, so the 2.80 GHz figure is the fixed operating frequency for both threads.
Benchmark Performance
The FACT PACK records a 50th percentile standing against all CPUs, which places the A4-3420 exactly at the midpoint of the database's CPU population. Notably, the average benchmark score is 0 and the benchmarks array is empty, meaning no direct performance samples are available in this dataset. The percentile figure, however, is informative: half of all recorded CPUs score at or below this part, and half score above. For a dual-core, dual-thread desktop chip from the Llano generation, that median placement reflects the modest expectations of the segment.
The absence of a boost clock means the 2.80 GHz base frequency is the maximum sustained speed. With only two cores and two threads, the A4-3420 relies on per-core efficiency rather than parallelism. The 128 KB L1 cache per core and 512 KB L2 cache per core provide the working set for each thread, but there is no L3 cache listed. This cache layout is typical of the K10 family and limits how much shared data can be kept close to the cores.
In single-threaded workloads, the 2.80 GHz clock is respectable for its generation, but the lack of a boost state caps peak throughput. Multi-threaded performance is constrained by the two-thread ceiling; any workload that scales beyond two threads will not see additional gains. The 50th percentile ranking suggests that in mixed workloads, the A4-3420 sits in the middle of the field — neither a standout nor a laggard.
Because the nearestRivals field is empty, the data does not provide direct percentage deltas against named competitors. The percentile is the only quantitative comparison anchor available. It indicates that the A4-3420 is not an outlier on either end of the performance spectrum.
Who Should Consider It
The A4-3420 is suited to basic desktop tasks where two threads at 2.80 GHz are sufficient. Office productivity — word processing, spreadsheet work, and web browsing — falls within the capability envelope of this dual-core design. The integrated Radeon HD 6410D graphics handles display output without a separate graphics card, which keeps system complexity low.
For media consumption, the integrated GPU can drive video playback and casual content viewing. The dual-channel DDR3 memory interface, with 29.9 GB/s of bandwidth, provides adequate data flow for the integrated graphics and the CPU cores. That bandwidth figure is a hard ceiling, though; memory-heavy workloads will feel the constraint.
Gamers should temper expectations. The Radeon HD 6410D is an integrated solution, and the data shows no discrete graphics support beyond the PCIe Gen 2 slot. Lightweight or older titles may be playable, but the two-core CPU and integrated GPU combination is not designed for demanding modern games. The 50th percentile ranking reinforces that this is a middle-tier part, not a performance part.
Content creation that relies on multi-threading — video encoding, 3D rendering, compilation — will not benefit from this chip. With two threads, such workloads will be slow. The A4-3420 is a better fit for a secondary machine, a basic office build, or a home theater PC where the integrated graphics and low complexity matter more than raw throughput.
Users who need ECC memory will not find it here; the FACT PACK lists ECC support as false. That rules out error-correcting memory configurations for workstation-adjacent use.
Power and Thermals
The A4-3420 carries a 65W TDP, which defines its thermal envelope. This is a modest power class for a desktop processor, and it implies that a capable air cooler — a stock-style cooler or a basic tower — is sufficient. The 32nm process node keeps the die at 228 mm² with 1,178 million transistors, a density that helps manage heat output at the 65W limit.
The absence of a boost clock means the power draw is steady rather than spiky; the chip runs at a constant 2.80 GHz, so thermal loads are predictable. For system builders, this simplifies cooling choices: a standard 65W-class cooler is adequate, and there is no need for high-end liquid cooling. The integrated Radeon HD 6410D also contributes to the thermal budget, but the 65W figure already accounts for the full package.
Because the multiplier is locked (multiplierUnlocked: false), overclocking is not a path to higher performance. The thermal headroom of the 65W TDP cannot be exploited for frequency gains without external clock adjustment, which is not supported by the locked multiplier. The data indicates a fixed operating point, so thermal management is straightforward.
FAQ
Q: What socket does the A4-3420 use?
A: It uses AMD Socket FM1.
Q: Does the A4-3420 support ECC memory?
A: No, ECC memory support is listed as false.
Q: What memory type does it support?
A: It supports DDR3 memory in a dual-channel configuration, with a memory bandwidth of 29.9 GB/s.
Q: Is the multiplier unlocked for overclocking?
A: No, the multiplier is locked (multiplierUnlocked is false).
Q: Does it have integrated graphics?
A: Yes, it includes the Radeon HD 6410D integrated graphics.
Q: What is the production status of the A4-3420?
A: It is end-of-life, having been released on 2011-12-19.
How It Compares
The nearestRivals field in the data is empty, so there are no named competitors with scores or deltaPct values to cite. Positioned purely by the 50th percentile, the A4-3420 sits at the median of all CPUs in the database. This means it is not a performance outlier; it is a middle-of-the-road part.
Against the broader CPU landscape, the two-core, two-thread configuration places it below multi-core parts with more threads, but the 2.80 GHz clock and the integrated Radeon HD 6410D give it a functional edge for basic desktop use. The lack of an L3 cache is a differentiator — many CPUs in the database include L3, and its absence here suggests a lower memory hierarchy tier.
The 32nm process and 65W TDP put it in the efficiency-oriented camp of its generation. Compared to higher-core-count parts, the A4-3420 trades parallelism for simplicity. The empty rival list means the data cannot substantiate a head-to-head percentage comparison, but the percentile and architectural facts provide enough context to position it as an entry-level desktop chip.
Platform and Compatibility
The A4-3420 is built for AMD Socket FM1, a platform tied to the Llano generation. The chip uses the K10 architecture on a 32nm process node, with a die size of 228 mm² and 1,178 million transistors. Memory support is DDR3 in a dual-channel layout, delivering 29.9 GB/s of bandwidth. ECC memory is not supported, which narrows its use to consumer builds rather than error-sensitive workstations.
PCIe support is Gen 2, which is the interface generation available on this platform. This allows for a discrete graphics card or other expansion cards, though the integrated Radeon HD 6410D is present for basic display output. The production status is end-of-life, and the release date of 2011-12-19 means the platform is mature and no longer receiving new silicon.
Upgrade path considerations are limited by the end-of-life status. The Socket FM1 platform is specific to the Llano generation, so the upgrade options are constrained to other FM1 parts from the same era. The locked multiplier (multiplierUnlocked: false) removes overclocking as a longevity strategy. For a builder today, the A4-3420 is a fixed-configuration part: its performance is what the 2.80 GHz dual-core design delivers, with no headroom for tuning.
The dual-channel memory bus is a positive for the integrated graphics, as the Radeon HD 6410D shares that bandwidth. The 29.9 GB/s figure is the aggregate ceiling for both CPU and GPU memory traffic. The PCIe Gen 2 slot, if populated with a discrete GPU, would offload graphics work from the integrated unit, but the CPU's two-thread limit would still constrain overall system performance.
Detailed benchmark scores and charts for the AMD A4-3420 are below.
Benchmark Scores
No benchmark data available for this CPU.
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