AMD Athlon Silver 10 vs Intel Atom x7405C Comparison

Where Each One Wins

The Intel Atom x7405C is the clear multi-threaded and throughput champion, taking 9 of the 11 recorded head-to-head benchmark wins. Its advantage is not subtle in heavily parallel workloads. In data encryption, the Intel part scores 4004 against 2125 for the AMD Athlon Silver 10, an 88.4% lead. Physics simulation shows the largest gap, with the Atom scoring 460 versus 210, a 119% difference. The pattern holds across integer math (14669 vs 9354, 56.8% ahead), floating-point math (9063 vs 5936, 52.7% ahead), and multithread (5218 vs 3543, 47.3% ahead). Random string sorting also favors Intel heavily, 8089 vs 4736, a 70.8% lead. The data compression score is similarly lopsided, 56317 vs 42492, a 32.5% edge for the Atom.

The AMD Athlon Silver 10 wins exactly one meaningful category, though it is an important one: single-thread performance. In the PassMark single-thread test, the AMD chip scores 2089 against the Intel's 1675, a 19.8% advantage. That is the only head-to-head benchmark the AMD processor wins, but it signals better responsiveness in lightly threaded tasks, such as everyday desktop navigation, browser work, and older or poorly optimized applications that cannot use more than two cores. The extended instructions test is effectively a tie, with Intel leading by just 0.9%, which falls well within run-to-run variance and should not steer a purchasing decision.

For workloads that scale across cores, the Intel Atom x7405C is the obvious choice. For workloads that depend on a single fast core, the AMD Athlon Silver 10 has the edge. The database's overall average benchmark scores reflect this split: the AMD chip averages 6849 across all recorded tests, while the Intel averages 6568. The AMD's higher average comes from its single-thread strength, despite losing most individual comparisons. Its percentile rank of 63 versus Intel's 62 also reflects that the two sit at nearly the same level of overall CPU performance, just with very different distribution of strengths.

Architecture Differences

The two processors come from entirely different design philosophies. The Intel Atom x7405C uses the Amston Lake architecture with Gracemont cores, built on Intel's 10 nm process. It has 4 cores and 4 threads, no simultaneous multithreading. The AMD Athlon Silver 10 uses Zen 2 in the Mendocino codename, built on TSMC's 6 nm process, with just 2 cores and 2 threads. The process node difference is significant: 6 nm versus 10 nm, and the AMD chip comes from an external foundry, TSMC, while Intel fabricates its own silicon.

Cache layouts differ substantially. The Intel part allocates 96 KB of L1 per core, 2 MB of shared L2, and 6 MB of shared L3. The AMD chip has 64 KB L1 per core, 512 KB L2 per core (which totals 1 MB across two cores), and only 2 MB of shared L3. The Intel processor presents a much larger total cache hierarchy, which helps explain its strong showing in data compression and encryption, workloads that benefit from keeping more working data on-die.

Memory support also diverges. The Intel Atom x7405C supports DDR4 and DDR5 memory through a single-channel memory bus, with 38.4 GB/s of bandwidth. The AMD Athlon Silver 10 uses LPDDR5 only, but through a dual-channel bus, delivering 88.0 GB/s. That is more than double the memory bandwidth, which is notable for a chip with fewer cores. The AMD part includes integrated Radeon 610M graphics, while the Intel part has no integrated graphics at all, listed as N/A. Both platforms use PCIe Gen 3, but the Intel provides 9 lanes versus 4 lanes on the AMD side.

The AMD chip has a larger die at 100 mm², while the Intel die size is not recorded. Both are active production parts for the mobile market segment, both lack ECC memory support, and neither has an unlocked multiplier. The AMD Athlon Silver 10 was released later, in late September 2025, while the Intel Atom x7405C launched in April 2024. The Intel part carries a launch MSRP of $57; the AMD part has no recorded launch MSRP. The Intel part number is SRNEM, the AMD part number is 100-000000776.

FAQ

Q: Which processor is better for multi-core workloads?

A: The Intel Atom x7405C wins every heavily parallel benchmark in the head-to-head set. It leads by 47.3% in multithread, 56.8% in integer math, 52.7% in floating-point math, and 119% in physics. Its 4 cores and 4 threads simply outmuscle the AMD's 2 cores and 2 threads in these tests.

Q: Does the AMD Athlon Silver 10 have any advantage?

A: Yes, in single-thread performance. It scores 2089 in the PassMark single-thread test versus 1675 for the Intel, a 19.8% lead. It also has a higher average benchmark score overall, 6849 versus 6568, and a slightly higher percentile rank, 63 versus 62.

Q: How do their memory systems compare?

A: The AMD Athlon Silver 10 uses dual-channel LPDDR5 with 88.0 GB/s of bandwidth. The Intel Atom x7405C uses single-channel DDR4 or DDR5 with 38.4 GB/s. The AMD chip has more than double the memory bandwidth, which may help in memory-sensitive single-thread tasks.

Q: Do both processors have integrated graphics?

A: No. The AMD Athlon Silver 10 includes Radeon 610M integrated graphics. The Intel Atom x7405C has no integrated graphics at all, listed as N/A in the database.

Q: Which processor has more cache?

A: The Intel Atom x7405C has a larger cache hierarchy overall: 96 KB L1 per core, 2 MB shared L2, and 6 MB shared L3. The AMD has 64 KB L1 per core, 512 KB L2 per core, and 2 MB shared L3. The Intel also has a much larger L3, 6 MB versus 2 MB.

Q: Are these processors comparable in overall performance?

A: The database shows they sit close in overall ranking. The AMD Athlon Silver 10 has a 63rd percentile rank versus the Intel's 62nd, and the average scores are 6849 versus 6568. They are different in character, but similar in overall tier.

Specification Differences

| Specification | Intel Atom x7405C | AMD Athlon Silver 10 |

|----------------|--------------------|----------------------|

| Cores | 4 | 2 |

| Threads | 4 | 2 |

| Base clock | 1.70 GHz | 2.40 GHz |

| Boost clock | 3.40 GHz | 3.50 GHz |

| TDP | 12 W | 15 W |

| Socket | Intel BGA 1264 | AMD Socket FT6 |

| Architecture | Amston Lake | Zen 2 (Mendocino) |

| Process node | 10 nm | 6 nm |

| Foundry | Intel | TSMC |

| Die size | Not recorded | 100 mm² |

| L1 cache | 96 KB (per core) | 64 KB (per core) |

| L2 cache | 2 MB (shared) | 512 KB (per core) |

| L3 cache | 6 MB (shared) | 2 MB (shared) |

| Memory support | DDR4, DDR5 | LPDDR5 |

| Memory bus | Single-channel | Dual-channel |

| Memory bandwidth | 38.4 GB/s | 88.0 GB/s |

| PCIe | Gen 3, 9 lanes (CPU only) | Gen 3, 4 lanes (CPU only) |

| Integrated graphics | N/A | Radeon 610M |

| Release date | 2024-04-07 | 2025-09-30 |

| Launch MSRP | $57 | Not recorded |

| Part number | SRNEM | 100-000000776 |

Head-to-Head Benchmarks

The single largest margin belongs to the Intel Atom x7405C in the physics test, where it scores 460 against the AMD's 210, a 119% lead. That result is consistent with the core count difference, since physics workloads scale well with additional cores. Data encryption shows an 88.4% Intel advantage, 4004 vs 2125, a workload where the Intel's larger L3 cache and four threads produce a decisive gap. Random string sorting goes to Intel by 70.8%, 8089 vs 4736, and find prime numbers by 69.2%, 22 vs 13. Integer math is 56.8% in Intel's favor, 14669 vs 9354, and floating-point math is 52.7% in Intel's favor, 9063 vs 5936. The multithread score, which is a general indicator of parallel throughput, shows Intel at 5218 versus AMD's 3543, a 47.3% lead. Data compression is the closest of the Intel wins after the near-tie, 56317 vs 42492, a 32.5% margin. The extended instructions test is essentially a dead heat, 2771 vs 2747, a 0.9% edge for Intel.

The AMD Athlon Silver 10's only win is the PassMark single-thread test, 2089 vs 1675, a 19.8% advantage. This appears twice in the recorded data under the names single_thread and singlethread, both with identical scores and deltas. The AMD chip's higher base clock of 2.40 GHz versus 1.70 GHz and higher boost clock of 3.50 GHz versus 3.40 GHz help explain this result, as does its newer 6 nm process from TSMC. The AMD chip also benefits from dual-channel LPDDR5 memory with 88.0 GB/s of bandwidth, which can reduce latency in single-threaded memory access patterns.

The Verdict

Choose the Intel Atom x7405C if your workloads are multi-threaded. The data shows it leading by 47.3% in multithread, 56.8% in integer math, 52.7% in floating-point math, and 119% in physics. It also wins data compression, encryption, prime number finding, and random string sorting by wide margins. Its 4 cores, 4 threads, 6 MB of shared L3 cache, and 2 MB of shared L2 give it the resources to dominate parallel throughput. The launch MSRP of $57 applies to the Intel part, and it is the older release from April 2024.

Choose the AMD Athlon Silver 10 if single-thread responsiveness matters more than raw multi-core output. It leads the only single-thread benchmark by 19.8%, has a higher overall average benchmark score of 6849 versus 6568, and sits at the 63rd percentile versus the Intel's 62nd. Its 6 nm process, dual-channel LPDDR5 memory with 88.0 GB/s of bandwidth, and integrated Radeon 610M graphics make it a more complete package for a lightweight mobile system where snappy single-core behavior and built-in display output are priorities. The Intel part has no integrated graphics, so a discrete GPU would be mandatory in any system built around it.

For a compact, low-power system with parallel tasks, the Intel Atom x7405C delivers far more throughput. For a simple two-core device that needs to feel quick in everyday single-threaded use and includes graphics on the chip, the AMD Athlon Silver 10 is the better fit. The two processors occupy nearly the same overall performance tier, but they serve opposite ends of the workload spectrum. The database's benchmark results do not declare a single winner, they declare two different winners for two different jobs.