AMD A6-3400M

The AMD A6-3400M is a quad-core mobile processor from the Llano generation, built on a 32 nm process with a 35 W TDP. Its benchmark profile places it near the bottom of the performance spectrum, with an average benchmark score of 394 and a percentile ranking of 5 among all CPUs. The data shows a processor designed for basic everyday tasks rather than demanding workloads, and its nearest rivals—all Intel Core i3/i5 or AMD Athlon II parts—perform within a fraction of a percent, making this a tightly clustered low-end segment.

How It Compares

Against the Intel Core i3-2310M, the A6-3400M holds a marginal edge of 0.3% in average benchmark score (394 vs. 393). This is effectively a tie; the two processors are interchangeable in real-world terms for light workloads, though the A6’s integrated graphics may offer a different user experience than the Intel HD Graphics found in the i3.

The Intel Core i3-2332M is slightly faster, with an average score of 396, putting the A6-3400M 0.4% behind. The delta is negligible, and both CPUs would struggle with anything beyond basic productivity. The i3-2332M’s higher clock speeds (not listed here) might explain the small gap, but the benchmark data alone shows no meaningful separation.

The Intel Core i5-430M posts an average score of 392, which the A6-3400M beats by 0.4%. This is a surprising result given the i5’s reputation, but the numbers indicate the A6-3400M is slightly ahead in this composite metric. Still, the difference is within noise, and users would not perceive any practical speed difference between these two.

Finally, the AMD Athlon II X2 280 scores 396, making the A6-3400M 0.5% slower. That Athlon is a dual-core part, yet it edges out the quad-core A6 in the average benchmark. This suggests that the A6’s extra cores do not translate into higher composite performance in this low-power mobile segment, likely due to low clock speeds and inefficient scaling.

Who Should Consider It

The A6-3400M is suited for users whose primary tasks are web browsing, document editing, and light media consumption. Its quad-core configuration helps with multi-tasking, but the low single-thread score of 221 in Geekbench means any heavily single-threaded application—such as older games or basic office software—will feel sluggish. The integrated Radeon HD 6520G provides basic graphics capability, enough for video playback and casual 2D games, but not for modern 3D titles.

For office productivity, the A6-3400M can handle spreadsheets and word processors without issue, though large datasets in Excel or complex PowerPoint animations may cause stutters. Content creation is not a realistic use case; video editing or 3D rendering would overwhelm this chip, as its multi-core score of 567 in Geekbench is far below what such workloads require. Students or users with a very limited budget who need a laptop for note-taking and browsing might find it acceptable, but anyone expecting smooth performance in modern web apps (e.g., video conferencing, cloud-based tools) should look elsewhere.

The processor’s 5th percentile ranking among all CPUs reinforces its position as a legacy entry-level part. It is not a candidate for upgrades or heavy workloads; it is best viewed as a stopgap for basic tasks until a more capable system can be obtained.

Benchmark Performance

The A6-3400M’s average benchmark score of 394 places it in a tight cluster with its nearest rivals, all within 0.5% of each other. The Geekbench results reveal a notable split: a multi-core score of 567 and a single-core score of 221. The multi-core score is roughly 2.57 times the single-core score, which is far below the ideal 4x scaling expected from a quad-core processor. This indicates poor parallel efficiency—likely due to the low base clock of 1400 MHz and the K10 architecture’s limitations.

Compared to the Intel Core i3-2310M, the A6-3400M is 0.3% faster in the average benchmark, but the Geekbench multi-core score of 567 suggests it can leverage its four cores better than the dual-core i3 in multi-threaded tasks, even if the overall composite is similar. Against the Core i3-2332M, the A6 is 0.4% slower, and the i3’s higher clock speed (not specified here) likely gives it an edge in single-threaded work. The Core i5-430M, despite being an older dual-core with Hyper-Threading, is 0.4% slower than the A6 in the average score, but the i5’s single-thread performance is probably stronger—the A6’s 221 single-core score is very low.

The Athlon II X2 280, a desktop part, scores 0.5% higher than the A6, showing that the A6’s mobile power constraints and low clocks hurt it even against a dual-core desktop chip. In summary, the A6-3400M sits at the very bottom of the performance ladder, with no single metric where it stands out. Its only advantage is the quad-core count, which helps in multi-threaded scenarios, but the absolute scores are too low to matter for demanding software.

FAQ

Q: What socket does the AMD A6-3400M use?

A: It uses the AMD Socket FS1, designed for mobile platforms.

Q: Does the A6-3400M support ECC memory?

A: No, ECC memory is not supported.

Q: What integrated graphics does the A6-3400M include?

A: It integrates a Radeon HD 6520G GPU, which shares system memory.

Q: How much L3 cache does the A6-3400M have?

A: It has no L3 cache; only L1 (128 KB per core) and L2 (1 MB per core) are present.

Q: What is the TDP of the A6-3400M?

A: The thermal design power is 35 watts, typical for a mobile processor of its era.

Q: When was the A6-3400M released?

A: Its release date is June 13, 2011, and it is now end-of-life.

Power and Thermals

With a TDP of 35 watts, the A6-3400M falls into the mainstream mobile power envelope. This is a modest figure, allowing for slim laptop designs without exotic cooling. The 32 nm process helps keep heat manageable, and a simple heatpipe or small fan is sufficient. However, the 1,178 million transistors packed into a 228 mm² die mean that sustained loads can still generate noticeable heat, especially in cramped chassis. The integrated Radeon HD 6520G also contributes to thermal output, though its low performance keeps it from becoming a major heat source. For a laptop from 2011, a standard cooling solution is adequate; no high-end liquid cooling or vapor chamber is needed. The end-of-life status means replacement parts are scarce, but the low TDP makes it easy to keep cool with basic thermal paste and a clean fan.

Single-Thread vs Multi-Thread Behavior

The Geekbench scores of 221 (single-core) and 567 (multi-core) reveal a processor that scales poorly across its four cores. The multi-core score is only 2.57 times the single-core score, which is far from the theoretical 4x improvement. This indicates that the K10 architecture, despite having four physical cores, cannot efficiently utilize all of them for typical workloads. The base clock of 1400 MHz is very low, and even the boost clock of 2.30 GHz is modest. As a result, single-threaded tasks—such as opening a spreadsheet, loading a web page, or running a legacy game—will feel slow because the processor cannot ramp up quickly. Multi-threaded tasks, like video encoding or batch photo editing, will use all cores, but the absolute throughput is still limited by the low clocks and lack of L3 cache.

In practice, the A6-3400M behaves like a dual-core processor with extra cores that rarely engage. Office applications that are single-threaded will see no benefit from the quad-core design, while multi-threaded applications may see modest gains but still lag behind even dual-core Intel parts from the same era. The 0.5% deficit against the dual-core Athlon II X2 280 in the average benchmark underscores this point: the A6’s additional cores do not compensate for its low single-thread performance.

Platform and Compatibility

The A6-3400M is built for the AMD Socket FS1, a mobile-only socket that is not compatible with desktop boards. It supports DDR3 memory in dual-channel configuration, though the memory bandwidth is not specified in the data. There is no PCIe information provided, so the expansion capabilities are unknown, but as a mobile part, it likely connects to the chipset via a standard mobile PCIe bus. The processor has an unlocked multiplier? No, it is locked, meaning overclocking is not possible. Its architecture is K10 (Llano), a 32 nm design with 1,178 million transistors and a 228 mm² die size.

Upgrade paths are essentially nonexistent. The FS1 socket was used by AMD’s Llano and later Trinity/Richland mobile processors, but the A6-3400M is end-of-life, and no modern CPUs fit this socket. Users are limited to the original motherboard and cannot swap in a faster chip without replacing the entire laptop. Memory support is limited to DDR3, which is now outdated. The integrated Radeon HD 6520G uses system memory, so faster RAM could slightly improve graphics performance, but the CPU itself remains the bottleneck. For anyone considering this platform today, the lack of upgrade potential and the low performance make it a poor choice for anything beyond basic legacy tasks.