AMD A6-9550

The AMD A6-9550 is a desktop APU that combines two Excavator cores with Radeon R5 integrated graphics. It uses the AM4 socket, supports dual-channel DDR4 memory, and is built on a 28 nm process at GlobalFoundries. With a 65-watt TDP, a base clock of 3.80 GHz, and a boost clock of 4.00 GHz, it targets entry-level systems where a discrete GPU is unnecessary. The processor was released on July 26, 2017, and its production status is Active.

Platform and Compatibility

The A6-9550 is physically installed in AMD Socket AM4, a socket that also accommodates DDR4 memory modules via a dual-channel memory controller. The memory bandwidth is rated at 38.4 GB/s, which is a direct result of the dual-channel DDR4 interface. The processor provides 8 PCIe Gen3 lanes from the CPU, which can be used for a discrete graphics card, NVMe storage, or other high-speed expansion devices. ECC memory is not supported, so the platform is not aimed at error-correcting workloads. The integrated Radeon R5 graphics core provides display output, eliminating the need for a separate graphics card in basic configurations.

The chip is based on the Bristol Ridge architecture, which uses Excavator cores. This is an older microarchitecture compared to more recent AMD designs, but the AM4 socket ensures physical compatibility with motherboards that support this generation. The process node is 28 nm, and the die size is 250 mm², containing 3,100 million transistors. The cache hierarchy consists of 160 KB of L1 cache and 1 MB of shared L2 cache; there is no L3 cache. This limited cache may affect performance in applications that rely on larger working sets. The memory controller supports DDR4 modules, and the dual-channel configuration provides the 38.4 GB/s bandwidth. The lack of ECC support means the platform is not intended for server or workstation use. The PCIe Gen3 specification with 8 lanes is adequate for a single graphics card or NVMe storage, though the number of lanes is lower than many other desktop CPUs. The production status is listed as Active, indicating the part is still being manufactured.

The processor's part number is AD9550AGM23AB, and the multiplier is locked, meaning overclocking is not supported through standard multiplier adjustments. The market segment is Desktop, which aligns with its intended use in consumer systems. The AM4 socket is a shared interface across multiple AMD processor generations, but the A6-9550's own specifications define its compatibility: DDR4 memory, dual-channel operation, and PCIe Gen3. The absence of L3 cache is a notable design choice; the 1 MB L2 is shared between the two cores, which can create contention in multi-threaded workloads.

Power and Thermals

The A6-9550 has a TDP of 65 watts, placing it in the mainstream power envelope. For a dual-core processor with integrated graphics, this is a moderate figure. The 28 nm process is not the most power-efficient, but the low core count keeps thermal output manageable. A standard air cooler with a modest heatsink should suffice for most users; the base clock of 3.80 GHz and boost clock of 4.00 GHz are within the thermal limits of the 65 W design. The die size of 250 mm² and transistor count of 3,100 million indicate a relatively large chip for the core count, but the power draw is constrained by the TDP. The 65 W rating means that even a compact chassis with decent airflow can handle the heat. Overclocking is not supported because the multiplier is locked, so users should not expect to exceed the rated boost clock without external clock generation methods.

The integrated Radeon R5 graphics also contributes to the thermal load, though its power consumption is not specified separately. The 28 nm process is older, but the modest clock speeds and dual-core design keep the overall power draw within the 65 W envelope. For users building a small form factor system, the A6-9550's power requirements are modest, and a low-profile cooler can be used as long as it is rated for 65 W TDP. The lack of a discrete GPU further reduces system power needs, making the platform suitable for energy-conscious builds.

Who Should Consider It

The A6-9550 is suited for basic computing tasks such as web browsing, word processing, and light media playback. The integrated Radeon R5 graphics handles display output and can decode video streams, making it a candidate for home theater PCs or office machines that do not require discrete graphics. The dual-core design with two threads limits its capability in multi-threaded applications like video editing or 3D rendering, where more cores are beneficial. The 50th percentile ranking among all CPUs suggests that it sits at the median of the performance distribution, but this is a general metric and does not reflect specific workload performance. For users who primarily run single-threaded applications, the 4.00 GHz boost clock can provide responsive performance. However, the lack of SMT (simultaneous multithreading) means that even light multitasking can saturate both threads. The 1 MB L2 cache is shared, which may cause contention in multi-threaded workloads.

The processor is also appropriate for legacy or secondary systems where a low-cost, low-power APU is sufficient. The AM4 socket and DDR4 memory support ensure compatibility with modern motherboards, though the older Excavator architecture may not take full advantage of newer platform features. The integrated graphics eliminate the need for a separate GPU, reducing system cost and complexity. For users who do not plan to run demanding applications, the A6-9550 offers a functional foundation. The 65 W TDP allows for simple cooling solutions, and the active production status means it is still available for new builds.

How It Compares

The data provided does not include any nearest rivals for the A6-9550. Therefore, a direct comparison against specific competing processors is not possible from this dataset. The percentile position of 50% indicates that the processor is in the middle of the overall CPU performance distribution, but no relative scores or delta percentages are available. Without rival data, the analysis is limited to the specifications and general characteristics of the chip itself. The lack of nearest rivals means that any performance comparisons must be inferred from the processor's own parameters: two cores, two threads, a 3.80 GHz base clock, a 4.00 GHz boost clock, and a 65 W TDP. These figures suggest a baseline level of performance, but they do not provide context relative to other models. The 50th percentile is the only positional metric given, and it offers a coarse view of where the A6-9550 stands among all CPUs.

Single-Thread vs Multi-Thread Behavior

The A6-9550 has 2 cores and 2 threads, meaning it can execute only two threads concurrently. The base clock of 3.80 GHz and boost clock of 4.00 GHz are the key determinants of single-thread performance. In tasks that rely on a single core, the processor can reach 4.00 GHz, which is a respectable frequency for its class. However, the Excavator architecture is older, and its instructions-per-clock may be lower than newer designs. The lack of L3 cache and the relatively small 1 MB L2 cache may also impact performance in cache-intensive workloads. The 28 nm process and the shared L2 design are factors that contribute to its overall behavior.

In multi-threaded scenarios, the processor is limited to two threads. This means that applications that can use more than two threads will see no benefit beyond that point. The absence of SMT further restricts concurrent execution to exactly two threads. For workloads that are highly parallel, such as video rendering or scientific simulations, the A6-9550 will lag behind processors with more cores. However, for single-threaded or lightly threaded tasks like word processing or web browsing, the 4.00 GHz boost clock can provide adequate responsiveness. The 50th percentile ranking suggests that the processor is not exceptionally fast or slow, but its dual-core design places it at a disadvantage in multi-threaded environments. Users who regularly run multi-threaded applications should consider a processor with more cores, but for basic single-threaded use, the A6-9550 is a viable option.

FAQ

Q: What socket does the AMD A6-9550 use?

A: The A6-9550 uses AMD Socket AM4.

Q: Does the A6-9550 support ECC memory?

A: No, ECC memory is not supported by this processor.

Q: What is the memory bandwidth of the A6-9550?

A: The dual-channel DDR4 memory controller provides a bandwidth of 38.4 GB/s.

Q: How many PCIe lanes are available?

A: The CPU provides 8 PCIe Gen3 lanes.

Q: What is the TDP of the A6-9550?

A: The thermal design power is 65 watts.

Q: Does the A6-9550 have integrated graphics?

A: Yes, it includes Radeon R5 integrated graphics.