CPU Comparison

FAQ

Q: Which processor wins the majority of the head-to-head benchmark comparisons?

A: The AMD A8-7650K wins all five head-to-head benchmark comparisons against the Intel Atom C5315, with margins ranging from 4.3% to 4.7% depending on the test.

Q: How do the two processors compare in terms of overall benchmark average?

A: The Intel Atom C5315 has a slightly higher average benchmark score of 871, compared to the AMD A8-7650K's 860. However, both sit at the 23rd percentile of all CPUs, indicating nearly identical overall performance tiers.

Q: What is the difference in multi-core performance in Cinebench R23?

A: The AMD A8-7650K scores 2,647 points in Cinebench R23 multi-core, which is 4.5% higher than the Intel Atom C5315's 2,533 points.

Q: Do both processors support the same memory type?

A: No. The AMD A8-7650K supports DDR3 memory, while the Intel Atom C5315 supports DDR4 memory. Both use dual-channel memory buses.

Q: Which processor has ECC memory support?

A: The Intel Atom C5315 supports ECC memory, while the AMD A8-7650K does not. This is a notable distinction for server and workstation reliability use cases.

Q: Are both processors still in production?

A: No. The AMD A8-7650K is end-of-life, while the Intel Atom C5315 is listed as active and currently in production.

Architecture Differences

The AMD A8-7650K and Intel Atom C5315 represent fundamentally different architectural philosophies. The AMD chip uses the Steamroller architecture under the Kaveri codename, built on a 28 nm process at GlobalFoundries. It packs 2,411 million transistors into a 245 mm² die. The Intel Atom C5315, in contrast, uses the Tremont architecture under the Parker Ridge codename, fabricated on Intel's 10 nm process. The process node difference is substantial, 28 nm versus 10 nm, which explains the Intel chip's significantly lower power envelope despite similar core counts.

The cache hierarchies diverge notably. The AMD A8-7650K has 256 KB of L1 cache and 4 MB of L2 cache. The Intel Atom C5315 lists L1 cache as 64 KB per core and L2 cache as 4.5 MB per module. Neither processor has L3 cache. The Intel chip's per-module L2 arrangement reflects its Atom lineage, which organizes cores differently than AMD's conventional desktop design.

Integrated graphics represent another major architectural split. The AMD A8-7650K includes Radeon R7 integrated graphics, making it a complete APU solution. The Intel Atom C5315 has no integrated graphics (listed as N/A), which aligns with its server/workstation market segment. The AMD chip's socket is AMD Socket FM2+, while the Intel chip uses Intel BGA 2106, a soldered embedded form factor.

The production statuses tell a generational story. The AMD A8-7650K was released in January 2015 and is now end-of-life. The Intel Atom C5315 was released in June 2022 and remains active. This seven-year gap explains the process node advantage and memory support differences, yet the benchmark data reveals that the older AMD chip still edges ahead in raw compute tests.

Where Each One Wins

The AMD A8-7650K wins in every head-to-head benchmark category. Its advantages are consistent across multi-core and single-core tests, with deltas between 4.3% and 4.7%. The largest single margin is in Cinebench R20 single-core, where the AMD chip leads by 4.7%. The smallest margin is in Cinebench R15 multi-core, at 4.3%. This uniformity suggests a broad performance advantage rather than strength in any particular workload type.

The Intel Atom C5315 wins in areas not captured by the benchmark suite. It has ECC memory support, which the AMD chip lacks, critical for data integrity in server environments. It also has a higher memory bandwidth at 38.4 GB/s versus 34.1 GB/s, and supports DDR4 memory, which offers better power efficiency and higher densities. The Intel chip's TDP of 38 watts versus the AMD chip's 95 watts makes it suitable for power-constrained deployments.

The AMD chip's integrated Radeon R7 graphics give it a functional advantage for systems needing display output without a discrete GPU. The Intel Atom C5315, with no integrated graphics, requires a separate graphics solution. However, in a server/workstation context, that is typically expected. The AMD A8-7650K also has an unlocked multiplier, allowing overclocking, while the Intel chip is locked.

Specification Differences

| Specification | AMD A8-7650K | Intel Atom C5315 |

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

| Base Clock | 3.30 GHz | 2.40 GHz |

| Boost Clock | 3.80 GHz | None |

| TDP | 95 W | 38 W |

| Socket | AMD Socket FM2+ | Intel BGA 2106 |

| Architecture | Steamroller | Tremont |

| Codename | Kaveri | Parker Ridge |

| Process Node | 28 nm | 10 nm |

| Foundry | GlobalFoundries | Intel |

| Transistors | 2,411 million | Not listed |

| Die Size | 245 mm² | Not listed |

| L1 Cache | 256 KB | 64 KB (per core) |

| L2 Cache | 4 MB | 4.5 MB (per module) |

| Memory Support | DDR3 | DDR4 |

| Memory Bandwidth | 34.1 GB/s | 38.4 GB/s |

| ECC Memory | No | Yes |

| PCIe Lanes | 16 (Gen 3) | 8 (Gen 3) |

| Integrated Graphics | Radeon R7 | N/A |

| Market Segment | Desktop | Server/Workstation |

| Production Status | End-of-life | Active |

| Release Date | 2015-01-06 | 2022-06-05 |

| Multiplier Unlocked | Yes | No |

| Part Number | AD765KXBJABOXAD765KXBJASBXAD765KXBI44JA | SRL3Y |

Head-to-Head Benchmarks

The head-to-head data shows a consistent pattern of AMD victory across all five Cinebench tests. In Cinebench R15 multi-core, the AMD A8-7650K scores 266 versus the Intel Atom C5315's 255, a 4.3% lead. Moving to Cinebench R20 multi-core, the AMD chip scores 1,111 against 1,063, improving the margin slightly to 4.5%. The single-core tests tell the same story: Cinebench R20 single-core shows 156 versus 149 (4.7% delta), and Cinebench R23 single-core shows 373 versus 357 (4.5% delta).

The Cinebench R23 multi-core result is the most significant absolute gap. The AMD A8-7650K's 2,647 points versus the Intel Atom C5315's 2,533 points represents a 114-point difference. Given that both processors have identical core and thread counts (4 cores, 4 threads), the performance delta must come from architectural efficiency and clock speed. The AMD chip's base clock of 3.30 GHz and boost clock of 3.80 GHz substantially exceed the Intel chip's fixed 2.40 GHz base clock.

The benchmark averages from the broader database reinforce this picture. The AMD A8-7650K's average benchmark score is 860, with nearest rivals including the Intel Core i7-4500U at 859 (0.1% delta) and the Intel Xeon W3520 at 862 (-0.2% delta). The Intel Atom C5315's average is 871, with nearest rivals including the AMD Athlon PRO 3045B at 872 (-0.1% delta) and the Intel Core i3-5157U at 877 (-0.7% delta). Despite the Atom's slightly higher average, the head-to-head Cinebench results all favor AMD.

The Geekbench tests are only available for the AMD A8-7650K, which scores 1,048 multi-core and 421 single-core. No Geekbench scores are listed for the Intel Atom C5315, leaving a gap in the comparison data. The consistent 4.3-4.7% deltas across all Cinebench versions suggest that the performance relationship is stable regardless of workload generation or test methodology.

The Verdict

The data presents a clear but nuanced picture. The AMD A8-7650K wins every head-to-head benchmark by a narrow but consistent margin of roughly 4.5%. For users prioritizing raw compute performance in Cinebench-style workloads, the AMD chip is the superior choice. Its higher base and boost clocks, combined with the unlocked multiplier for overclocking, give it a performance edge that the Intel Atom C5315 cannot overcome despite its newer architecture and process node.

However, the Intel Atom C5315 makes a compelling case for specific environments. Its ECC memory support, DDR4 compatibility, higher memory bandwidth (38.4 GB/s versus 34.1 GB/s), and dramatically lower TDP (38 watts versus 95 watts) position it as the appropriate selection for server and workstation deployments where reliability, power efficiency, and memory integrity matter more than peak compute throughput. The active production status and 2022 release date also provide availability and longevity advantages over the end-of-life AMD part.

The market segments tell the story: the AMD A8-7650K is a desktop APU with integrated Radeon R7 graphics, designed for consumer systems. The Intel Atom C5315 is a server/workstation processor with no integrated graphics, designed for embedded and data-center roles. The benchmark results show that in pure CPU compute, the older AMD design retains a slight edge. But the Intel chip's feature set, ECC, DDR4, lower power, addresses requirements that benchmarks do not measure. The choice depends on whether the user needs the AMD chip's compute lead and integrated graphics or the Intel chip's reliability features and power efficiency. For a desktop build with light-to-moderate compute needs, the AMD A8-7650K wins on performance. For a server or workstation prioritizing data integrity and operational efficiency, the Intel Atom C5315 is the data-supported pick.