AMD Ryzen 5 PRO 8645HS vs Qualcomm Snapdragon X1E-78-100 Comparison

Head-to-Head Benchmarks

The recorded data presents an unusual comparison: the AMD Ryzen 5 PRO 8645HS has a full suite of benchmark results, while the Qualcomm Snapdragon X1E-78-100 has no recorded benchmark scores in the database. This absence makes a direct score-for-score comparison impossible. The database lists the AMD part with a percentile rank of 82 among all CPUs and an average benchmark score of 30,879, while the Snapdragon holds a 50th percentile rank with an average score of zero, reflecting the lack of measured results.

Examining the AMD Ryzen 5 PRO 8645HS on its own reveals its performance profile. In Cinebench R23, it records a multicore score of 19,742 and a single-core score of 2,787. The older Cinebench R20 iteration shows 8,291 multicore and 1,170 single-core. Cinebench R15 results are 1,989 multicore and 280 single-core. These figures place the chip solidly in the upper half of the database. The nearest rivals in the database, based on average score, include the AMD Ryzen 7 8700F at 30,746 (0.4% lower), the Intel Core i7-13700TE at 31,028 (0.5% higher), the AMD Ryzen 9 8945HS at 31,074 (0.6% higher), and the Intel Core i7-12700F at 31,081 (0.6% higher). The Ryzen 5 PRO 8645HS sits within a narrow band of roughly half a percent of these processors, indicating that its aggregate performance is competitive with mid-range desktop and mobile parts from both AMD and Intel.

PassMark results for the AMD chip show a multithread score of 23,569 and a single-thread score of 3,858. Integer math reaches 72,740, floating point math 45,481, and extended instructions 21,212. Data encryption scores 17,387, while data compression reaches 265,826. Random string sorting records 35,472, and find prime numbers scores 73. Physics tests yield 1,208. These numbers provide a baseline for the AMD processor, but without corresponding Snapdragon scores, the head-to-head section of this comparison remains one-sided.

Architecture Differences

The two processors diverge substantially in architecture. The AMD Ryzen 5 PRO 8645HS uses the Zen 4 architecture under the Hawk Point codename, part of the 8000 series. The Qualcomm Snapdragon X1E-78-100 uses the Oryon codename, part of the Snapdragon X Elite generation. Both are built on a 4 nm process at TSMC, so the manufacturing node is identical. The AMD chip integrates 25,000 million transistors on a 178 mm² die, while the Snapdragon does not have transistor count or die size recorded in the database.

Core configurations differ significantly. The AMD processor has 6 cores and 12 threads, while the Snapdragon has 12 cores and 12 threads. This means the AMD chip uses simultaneous multithreading to reach 12 threads from 6 physical cores, whereas the Snapdragon relies on 12 physical cores without additional threading. Base clocks are 4.30 GHz for the AMD part and 3.40 GHz for the Snapdragon. The AMD chip has a boost clock of 5.00 GHz, while the Snapdragon has no boost clock recorded.

Cache hierarchies are structured differently. The AMD chip provides 64 KB of L1 cache per core, 1 MB of L2 per core, and 16 MB of shared L3. The Snapdragon provides 288 KB of L1 per core, 12 MB of L2 per module, and 6 MB of shared L3. The total cache capacity favors the AMD part in L3 terms, but the Snapdragon has a larger per-core L1 allocation and a larger L2 per module.

Memory support also separates the pair. AMD uses DDR5 memory with dual-channel configuration and 89.6 GB/s bandwidth, plus ECC support. Qualcomm uses LPDDR5X with dual-channel configuration and 135.2 GB/s bandwidth, without ECC. The Snapdragon offers substantially higher memory bandwidth, about 51% more, but the AMD part supports error-correcting memory. PCIe connectivity differs as well: AMD provides Gen 4 with 20 lanes (CPU only), while Qualcomm provides Gen 4 with 12 lanes (CPU only). The integrated graphics differ, with AMD using Radeon 760M and Qualcomm using Adreno X1-85.

Thermal design power is 45 W for the AMD processor and 35 W for the Snapdragon. The AMD socket is AMD Socket FP7, while the Snapdragon uses Qualcomm BGA 2073. Neither processor has an unlocked multiplier. Release dates are close, with the AMD part released on 2024-04-15 and the Snapdragon on 2024-04-23.

Where Each One Wins

The AMD Ryzen 5 PRO 8645HS wins in every category where recorded data exists, simply because the Snapdragon has no benchmark scores in the database. The AMD chip demonstrates strong multi-threaded performance with a Cinebench R23 multicore score of 19,742, which represents a 7.08x ratio over its own single-core score of 2,787. Scaling efficiency from 6 cores with 12 threads appears healthy. The PassMark multithread score of 23,569 against a single-thread score of 3,858 shows a 6.11x scaling factor, again indicating solid parallel utilization.

The AMD part also holds the advantage in raw clock speed. A base clock of 4.30 GHz and boost of 5.00 GHz exceed the Snapdragon's base of 3.40 GHz by a clear margin. Higher clocks generally translate to better single-thread responsiveness, and the Cinebench R23 single-core result of 2,787 confirms competitive single-thread capability. The nearest rival data places the AMD chip within 0.6% of the AMD Ryzen 9 8945HS and Intel Core i7-12700F, both of which are larger or higher-tier processors. This suggests the Ryzen 5 PRO 8645HS delivers performance close to parts above its class.

The Snapdragon X1E-78-100 has no recorded wins in the database. Its 50th percentile rank and zero average benchmark score indicate no measured performance data exists. The Qualcomm part does hold architectural advantages that could matter in specific scenarios: 135.2 GB/s memory bandwidth versus 89.6 GB/s, a 12-core configuration versus 6 cores, and a lower 35 W TDP versus 45 W. These specifications suggest potential strengths in memory-bandwidth-bound workloads and multi-core throughput, but the database contains no measurements to confirm such performance.

The Verdict

From the recorded data, the AMD Ryzen 5 PRO 8645HS is the only processor with verified performance. Its 82nd percentile rank among all CPUs, backed by a complete Cinebench and PassMark suite, makes it a well-characterized mobile processor. The near parity with rivals like the AMD Ryzen 7 8700F (0.4% lower average score) and Intel Core i7-12700F (0.6% higher) indicates the chip competes effectively with higher-tier parts. For builders who need a processor with proven multi-threaded and single-threaded results, the AMD part is the only option with data to support a decision.

The Snapdragon X1E-78-100 cannot be recommended based on performance data, as none exists in the database. Its architectural specifications, including 12 cores, 135.2 GB/s memory bandwidth, and 35 W TDP, make it an interesting candidate for power-sensitive, memory-heavy workloads. However, without benchmark scores, no empirical basis exists to prefer it. The 50th percentile rank, derived from zero measured scores, offers no confidence in real-world behavior.

The AMD chip also wins on compatibility and features: ECC memory support, 20 PCIe Gen 4 lanes, and a 5.00 GHz boost clock. The Snapdragon counters with higher memory bandwidth and more physical cores, but these remain unverified advantages. The verdict from the data is clear: the AMD Ryzen 5 PRO 8645HS is the proven performer, while the Snapdragon X1E-78-100 remains an unmeasured quantity.

FAQ

Q: Which processor has a higher benchmark score in the database?

A: The AMD Ryzen 5 PRO 8645HS has an average benchmark score of 30,879, while the Qualcomm Snapdragon X1E-78-100 has an average score of zero with no recorded benchmark results.

Q: How do the core counts compare?

A: The AMD Ryzen 5 PRO 8645HS has 6 cores and 12 threads, while the Qualcomm Snapdragon X1E-78-100 has 12 cores and 12 threads.

Q: What are the clock speeds of each processor?

A: The AMD processor has a base clock of 4.30 GHz and a boost clock of 5.00 GHz. The Qualcomm processor has a base clock of 3.40 GHz and no boost clock recorded.

Q: Which processor supports ECC memory?

A: The AMD Ryzen 5 PRO 8645HS supports ECC memory. The Qualcomm Snapdragon X1E-78-100 does not support ECC memory.

Q: How does memory bandwidth differ between the two?

A: The Qualcomm Snapdragon X1E-78-100 has 135.2 GB/s memory bandwidth using LPDDR5X, while the AMD Ryzen 5 PRO 8645HS has 89.6 GB/s using DDR5. Both use dual-channel configurations.

Q: What is the thermal design power of each chip?

A: The AMD Ryzen 5 PRO 8645HS has a TDP of 45 W. The Qualcomm Snapdragon X1E-78-100 has a TDP of 35 W.

Specification Differences

| Specification | AMD Ryzen 5 PRO 8645HS | Qualcomm Snapdragon X1E-78-100 |

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

| Cores | 6 | 12 |

| Threads | 12 | 12 |

| Base Clock | 4.30 GHz | 3.40 GHz |

| Boost Clock | 5.00 GHz | Not recorded |

| TDP | 45 W | 35 W |

| Socket | AMD Socket FP7 | Qualcomm BGA 2073 |

| Architecture | Zen 4 | Not recorded |

| Codename | Hawk Point | Oryon |

| Process Node | 4 nm | 4 nm |

| Foundry | TSMC | TSMC |

| Transistors | 25,000 million | Not recorded |

| Die Size | 178 mm² | Not recorded |

| L1 Cache | 64 KB (per core) | 288 KB (per core) |

| L2 Cache | 1 MB (per core) | 12 MB (per module) |

| L3 Cache | 16 MB (shared) | 6 MB (shared) |

| Memory Support | DDR5 | LPDDR5X |

| Memory Bus | Dual-channel | Dual-channel |

| Memory Bandwidth | 89.6 GB/s | 135.2 GB/s |

| ECC Memory | Yes | No |

| PCIe | Gen 4, 20 Lanes (CPU only) | Gen 4, 12 Lanes (CPU only) |

| Integrated Graphics | Radeon 760M | Adreno X1-85 |

| Release Date | 2024-04-15 | 2024-04-23 |

| Part Number | 100-000001315 (FP7r2), 100-000001388 (FP7) | X1E78100 |