AMD Athlon Silver 3050U vs AMD FX-4320 Comparison

The Verdict

The data presents a clear, if narrow, overall winner in the AMD FX-4320. Across every shared Cinebench benchmark, the FX-4320 takes the lead, with margins ranging from 6.7% to 7.1%. Its average benchmark score of 921 sits slightly above the Athlon Silver 3050U's 917, a 0.4% edge. However, the context of these results matters more than the raw scores. Both processors land in the bottom quartile of all CPUs, with the FX-4320 at the 25th percentile and the Athlon Silver at the 24th. These are entry-level parts, and the practical differences in performance are modest.

The FX-4320 is the choice for a desktop user who prioritizes raw multi-threaded throughput in legacy applications and has a motherboard that supports its integrated graphics via the chipset. It offers four physical cores at a 4.00 GHz base clock, boosting to 4.20 GHz, and its unlocked multiplier allows for overclocking. The Athlon Silver 3050U, conversely, is a mobile part with a 15W TDP, designed for power efficiency in laptops. Its two cores with four threads, based on the newer Zen architecture, deliver competitive single-threaded performance but fall short in the multi-threaded tests included here. For a user prioritizing battery life and a modern feature set like DDR4 memory and PCIe Gen 3, the Athlon Silver is the logical pick, despite its benchmark deficit.

In short, the data shows the FX-4320 as the performance winner, but the Athlon Silver 3050U as the more modern, efficient, and feature-rich platform. The choice hinges on whether the user's priority is the slight performance edge of the older desktop part or the efficiency and platform advantages of the newer mobile chip.

Where Each One Wins

The FX-4320 wins all five head-to-head benchmark comparisons. Its biggest margin is a 7.1% lead in Cinebench R23 single-core (378 vs 353), suggesting that even in lightly-threaded tasks, the older Piledriver architecture with its high clock speed holds an advantage. In multi-threaded workloads, the FX-4320 maintains a consistent 6.7% to 6.9% lead across Cinebench R15, R20, and R23, likely due to its two additional physical cores. For example, in Cinebench R23 multi-core, it scores 2677 versus the Athlon Silver's 2505, a 6.9% difference. This pattern indicates the FX-4320 is the better choice for any task that can utilize four cores, even with its older architecture.

The Athlon Silver 3050U has no benchmark wins in the provided head-to-head data. However, its strengths lie outside these specific tests. It features integrated Radeon Vega 3 graphics, which the FX-4320 lacks as a dedicated on-chip solution (the FX-4320 relies on a chipset feature on certain motherboards). Its 15W TDP is drastically lower than the FX-4320's 95W, making it the clear winner for any mobile or power-constrained scenario. The Athlon Silver also supports DDR4 memory with a higher theoretical bandwidth of 38.4 GB/s compared to the FX-4320's DDR3 at 29.9 GB/s. The data indicates the Athlon Silver is the superior platform for a modern, efficient, and compact system, while the FX-4320 is the performance pick in a desktop context.

Architecture Differences

The architectural gulf between these two processors is substantial, reflecting their different release periods and target markets. The AMD FX-4320, released in October 2012, uses the Piledriver architecture on a 32nm process from GlobalFoundries. It has four cores and four threads, with a die size of 315 mm² and 1,200 million transistors. Its cache hierarchy includes 192 KB of L1, 4 MB of L2, and a shared 4 MB of L3. It is built for the AMD Socket AM3+ platform, supporting dual-channel DDR3 memory with a bandwidth of 29.9 GB/s, and it uses PCIe Gen 2. The FX-4320 has an unlocked multiplier, making it overclockable, and is now end-of-life.

The AMD Athlon Silver 3050U, released in January 2020, is a radically different design. It uses the Zen architecture on a more advanced 14nm process, also from GlobalFoundries. It has two cores and four threads, with a die size of just 148 mm² but a much higher transistor count of 3,500 million. Its cache is organized per-core: 96 KB of L1 per core and 512 KB of L2 per core, with a shared 4 MB of L3. It is a mobile part for Socket FP5, supporting dual-channel DDR4 with a bandwidth of 38.4 GB/s, and it uses PCIe Gen 3 with 8 lanes from the CPU. The Athlon Silver includes integrated Radeon Vega 3 graphics, has a locked multiplier, and is currently in active production. Its TDP is 15W, a stark contrast to the FX-4320's 95W, highlighting its efficiency-focused design.

These differences explain the benchmark results. The FX-4320's higher clock speeds (4.00 GHz base vs 2.20 GHz) and two extra physical cores give it the edge in multi-threaded Cinebench tests. The Athlon Silver's newer Zen architecture is more efficient per clock, but its lower clocks and fewer cores result in lower scores. The data shows the FX-4320 as the more powerful compute engine, while the Athlon Silver is the more refined and efficient platform.

FAQ

Q: Which processor has a higher average benchmark score?

A: The AMD FX-4320 has an average benchmark score of 921, which is 0.4% higher than the AMD Athlon Silver 3050U's score of 917.

Q: In which benchmark does the FX-4320 have its largest advantage over the Athlon Silver?

A: The FX-4320's largest margin is in Cinebench R23 single-core, where it scores 378 versus the Athlon Silver's 353, a 7.1% difference.

Q: Does the Athlon Silver 3050U have integrated graphics?

A: Yes, the Athlon Silver 3050U includes Radeon Vega 3 integrated graphics. The FX-4320's graphics are a chipset feature available on certain motherboards, not a dedicated on-chip solution.

Q: What are the TDPs of these two processors?

A: The AMD FX-4320 has a TDP of 95W, while the AMD Athlon Silver 3050U has a TDP of 15W.

Q: Which processor supports DDR4 memory?

A: The AMD Athlon Silver 3050U supports DDR4 memory with a bandwidth of 38.4 GB/s. The AMD FX-4320 supports dual-channel DDR3 memory with a bandwidth of 29.9 GB/s.

Q: Is the FX-4320's multiplier unlocked for overclocking?

A: Yes, the AMD FX-4320 has an unlocked multiplier. The Athlon Silver 3050U does not, as its multiplier is locked.

Head-to-Head Benchmarks

The benchmark data shows a consistent, narrow victory for the AMD FX-4320 across all shared tests. The most telling result is in Cinebench R23 single-core, where the FX-4320 scores 378 against the Athlon Silver's 353, a 7.1% advantage. This is the largest delta in the entire head-to-head set, and it is notable because it demonstrates that the older Piledriver architecture, when run at a 4.20 GHz boost clock, can still outperform the newer Zen core in a single-threaded workload. This result suggests that raw clock speed can compensate for architectural efficiency in legacy benchmarks.

In multi-threaded workloads, the FX-4320's lead is slightly smaller but still consistent. In Cinebench R15 multi-core, it scores 269 versus 252, a 6.7% difference. In Cinebench R20 multi-core, the scores are 1124 and 1052, respectively, a 6.8% gap. The Cinebench R23 multi-core test shows a 6.9% difference, with the FX-4320 at 2677 and the Athlon Silver at 2505. The pattern is uniform: the FX-4320 is roughly 7% faster in every test. This consistency is a strong indicator that the performance difference is structural, driven by the FX-4320's two additional physical cores and higher clock speeds, rather than a workload-specific anomaly.

The single-core results follow the same trend. In Cinebench R20 single-core, the FX-4320 scores 158 versus the Athlon Silver's 148, a 6.8% lead. This mirrors the R23 single-core result, reinforcing that the FX-4320's advantage is not limited to multi-threaded scenarios. The data shows a processor that is uniformly faster, albeit by a modest margin, in the Cinebench suite. The Athlon Silver 3050U has zero wins in the head-to-head comparison, confirming the FX-4320 as the performance leader in this specific set of tests.