CPU Comparison

Head-to-Head Benchmarks

The benchmark data presents an unusually tight contest between the AMD Ryzen 5 7520C and the Intel Atom C5125. Across all six Cinebench workloads, the AMD part wins every single test, yet the margins are remarkably narrow, the largest delta is a mere 0.3%. In Cinebench R15 multi-core, the Ryzen 5 7520C scores 741 against 739 for the Atom C5125, a 0.3% advantage. The R15 single-core test is a dead heat at 104 points for both processors, with the delta recorded as 0%.

Moving to Cinebench R20, the AMD chip posts 3089 in multi-core versus 3081 for Intel, again a 0.3% win. The single-core R20 result shows 435 for AMD and 434 for Intel, a 0.2% edge. In Cinebench R23, the pattern holds: 7355 versus 7336 in multi-core (0.3% delta) and 1038 versus 1035 in single-core (0.3% delta). The consistency of these margins across all workloads suggests the two chips are engineered to nearly identical performance envelopes despite fundamentally different architectures.

The average benchmark scores reinforce this picture. The Ryzen 5 7520C averages 2127 across all tests, while the Atom C5125 averages 2122, a 0.3% gap that places them side by side in the overall rankings. Both processors sit at the 46th percentile among all CPUs, meaning they land in the same performance tier. In the nearest-rival lists, each chip appears as the other’s third-closest competitor. The Ryzen 5 7520C’s nearest rival is the Intel Core i7-1160G7 at 2124 (0.2% delta), with the Atom C5125 close behind at 2122. For the Atom, the Ryzen 5 7520C at 2127 shows a -0.2% delta, while the Intel Xeon E-2224G trails at 2117.

What is striking is that the Atom C5125 achieves this near-parity with half the threads of its rival in terms of architecture design, it fields 8 cores with 8 threads, while the Ryzen 5 7520C uses 4 cores with 8 threads. The fact that the AMD part wins every benchmark despite fewer physical cores points to a substantial per-core advantage, yet the Intel part’s additional cores claw back almost all of the ground. The data shows no scenario where the Atom pulls ahead; its best result is the R15 single-core tie. The Ryzen 5 7520C’s clean sweep of 6 wins versus 0 for the Atom is mathematically decisive but practically negligible given the sub-1% margins.

Architecture Differences

The two processors take fundamentally different design paths to reach the same performance destination. The AMD Ryzen 5 7520C uses the Zen 2 architecture under the Mendocino codename, built on TSMC’s 6 nm process with a die size of 100 mm². It integrates 4 cores with 8 threads via simultaneous multithreading. The Intel Atom C5125, by contrast, belongs to the Parker Ridge generation, using the Tremont microarchitecture on Intel’s 10 nm process. It provides 8 physical cores but only 8 threads, no multithreading, so the core count advantage is offset by the lack of SMT.

Cache hierarchies differ significantly. The Ryzen 5 7520C has 64 KB of L1 per core, 512 KB of L2 per core, and a 4 MB shared L3 cache. The Atom C5125 also has 64 KB of L1 per core but uses a module-based L2 design with 4.5 MB per module, and it has no L3 cache listed. The total cache footprint is therefore structured differently: AMD concentrates a shared L3 pool, while Intel distributes larger L2 modules across the die.

Memory support marks another major divergence. The Ryzen 5 7520C supports LPDDR5 memory over a dual-channel bus with 88.0 GB/s of bandwidth, a figure optimized for mobile efficiency. The Atom C5125 uses DDR4 across a dual-channel interface with 46.9 GB/s bandwidth, roughly half the memory throughput. This bandwidth gap likely explains how the 4-core AMD part keeps pace with the 8-core Intel chip in multi-threaded workloads: it can feed its cores more data per cycle.

The platform ecosystems are entirely different. The Ryzen 5 7520C fits AMD Socket FT6, targets the mobile market segment, and includes integrated Radeon 610M graphics. The Atom C5125 uses Intel BGA 2106, is classified as a server/workstation part, and has no integrated graphics. PCIe connectivity also differs: AMD provides Gen 3 with 4 lanes (CPU only), while Intel offers Gen 3 with 16 lanes (CPU only). ECC memory support is exclusive to the Intel chip, which aligns with its server positioning. The AMD part does not support ECC. Power envelopes contrast sharply, with the Ryzen 5 7520C rated at 15 W TDP versus 50 W for the Atom C5125. The Intel part also carries a launch MSRP of $335, while the AMD chip has no listed MSRP.

FAQ

Q: Which processor has the higher multi-core performance in Cinebench R23?

A: The AMD Ryzen 5 7520C scores 7355 in Cinebench R23 multi-core, while the Intel Atom C5125 scores 7336. The AMD part wins by 0.3%.

Q: Do these processors differ in single-core performance?

A: The differences are minimal. In Cinebench R15 single-core, both score 104. In R20, AMD leads 435 to 434 (0.2% delta). In R23, AMD leads 1038 to 1035 (0.3% delta).

Q: How do their core and thread counts compare?

A: The Ryzen 5 7520C has 4 cores and 8 threads. The Atom C5125 has 8 cores and 8 threads. The Intel part has double the physical cores but no multithreading.

Q: Which chip supports ECC memory?

A: The Intel Atom C5125 supports ECC memory. The AMD Ryzen 5 7520C does not support ECC.

Q: What is the memory bandwidth difference?

A: The Ryzen 5 7520C supports LPDDR5 with 88.0 GB/s bandwidth. The Atom C5125 uses DDR4 with 46.9 GB/s bandwidth. AMD’s memory bandwidth is nearly double.

Q: Which processor has integrated graphics?

A: The AMD Ryzen 5 7520C includes Radeon 610M integrated graphics. The Intel Atom C5125 has no integrated graphics (listed as N/A).

Specification Differences

| Specification | AMD Ryzen 5 7520C | Intel Atom C5125 |

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

| Cores | 4 | 8 |

| Threads | 8 | 8 |

| Boost Clock | 4.30 GHz | N/A |

| TDP | 15 W | 50 W |

| Socket | AMD Socket FT6 | Intel BGA 2106 |

| Architecture | Zen 2 | Tremont |

| Codename | Mendocino | Parker Ridge |

| Process Node | 6 nm | 10 nm |

| Foundry | TSMC | Intel |

| Die Size | 100 mm² | N/A |

| L2 Cache | 512 KB (per core) | 4.5 MB (per module) |

| L3 Cache | 4 MB (shared) | N/A |

| Memory Support | LPDDR5 | DDR4 |

| Memory Bandwidth | 88.0 GB/s | 46.9 GB/s |

| ECC Memory | No | Yes |

| PCIe | Gen 3, 4 Lanes | Gen 3, 16 Lanes |

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

| Market Segment | Mobile | Server/Workstation |

| Release Date | 2023-05-22 | 2022-06-05 |

| Launch MSRP | N/A | $335 |

| Part Number | 100-000000773 | SRL40 |

Where Each One Wins

The AMD Ryzen 5 7520C wins every benchmark in the head-to-head comparison, but the margins are so small that the practical takeaway is performance parity. The data shows the Ryzen 5 7520C ahead by 0.3% in R15 multi-core, 0% in R15 single-core, 0.3% in R20 multi-core, 0.2% in R20 single-core, 0.3% in R23 multi-core, and 0.3% in R23 single-core. These deltas are within run-to-run variance for most testing methodologies, meaning real-world workloads would be indistinguishable between the two.

Where the Ryzen 5 7520C holds a clear advantage is in power efficiency. Its 15 W TDP versus the Atom C5125’s 50 W TDP means the AMD part delivers essentially the same performance at one-third the power draw. Combined with LPDDR5 memory support and integrated Radeon 610M graphics, the Ryzen 5 7520C is positioned as a complete mobile solution, the CPU, memory controller, and GPU are all present without discrete components.

The Intel Atom C5125 wins on platform connectivity and server-oriented features. It offers 16 PCIe Gen 3 lanes versus 4 on the AMD part, making it more suitable for add-in cards, NVMe storage arrays, or network controllers. ECC memory support is a critical differentiator for reliability-sensitive workloads such as edge servers, network appliances, or storage systems where silent data corruption is unacceptable. The Atom also provides double the physical cores (8 versus 4), which may offer headroom for workloads that scale with core count rather than per-core throughput, even if current benchmarks show no multi-core advantage.

The market segmentation tells the story: the Ryzen 5 7520C is a mobile processor with a 2023 release date, while the Atom C5125 is a server/workstation part from 2022. For a thin-and-light laptop or fanless mobile device, the Ryzen 5 7520C’s low TDP, integrated graphics, and high-bandwidth LPDDR5 memory make it the logical choice. For a compact server or networking appliance where PCIe expansion, ECC reliability, and physical core count matter more than power draw, the Atom C5125 is the better fit. Both parts sit at the 46th percentile among all CPUs, and their average benchmark scores differ by only 5 points (2127 versus 2122), so the decision comes down to platform requirements rather than raw compute.