AMD Ryzen Embedded 8645HS vs Qualcomm Snapdragon X1E-80-100 Comparison

Where Each One Wins

The recorded data shows a fundamental split between these two mobile processors. The AMD Ryzen Embedded 8645HS and the Qualcomm Snapdragon X1E-80-100 target different priorities, and the benchmark results, while limited in this dataset, point to distinct strengths.

The AMD part leads in raw CPU throughput potential thanks to its higher clock envelope. Its base clock of 4.30 GHz and boost clock of 5.00 GHz exceed the Qualcomm's 3.40 GHz base and 4.00 GHz boost. For bursty workloads, short-duration tasks, or lightly threaded applications that scale with frequency, the AMD chip has the clear advantage. The data indicates that a single thread running at 5.00 GHz will complete work faster than one running at 4.00 GHz, assuming comparable per-clock efficiency.

The Qualcomm Snapdragon X1E-80-100 counters with core count and memory bandwidth. It packs 12 cores versus the AMD's 6, and while both parts support 12 threads, the Qualcomm achieves this through 12 physical cores rather than 6 cores with simultaneous multithreading. For heavily parallel workloads that can use every physical core, the Qualcomm's wider design provides more sustained throughput capacity. Additionally, its memory bandwidth of 135.2 GB/s significantly exceeds the AMD's 89.6 GB/s. This matters for data-intensive operations, large working sets, or integrated graphics workloads that rely on system memory bandwidth.

The thermal design points also reveal different design philosophies. The AMD part has a TDP of 45 watts, while the Qualcomm operates at 35 watts. This suggests the AMD chip is configured for higher sustained performance at the cost of more heat and power draw, while the Qualcomm targets efficiency. In a mobile context, the lower TDP of the Qualcomm could translate to longer battery life or thinner chassis designs, though the database does not record direct power efficiency benchmarks.

Architecture Differences

The architectural divide between these two processors is substantial. The AMD Ryzen Embedded 8645HS uses Zen 4 architecture under the codename Hawk Point, part of the 8000 series. It is manufactured on a 4 nm process at TSMC, with 25,000 million transistors on a 178 mm² die. The Qualcomm Snapdragon X1E-80-100 uses the Oryon codename, part of the Snapdragon X Elite generation, also built on a 4 nm TSMC process, though the database records no transistor count or die size for it.

Cache organization differs sharply. The AMD chip allocates 64 KB of L1 cache per core, 1 MB of L2 per core, and 16 MB of shared L3 cache. The Qualcomm design uses 288 KB of L1 per core, 12 MB of L2 per module, and 6 MB of shared L3. The larger per-core L1 and module-level L2 on the Qualcomm suggest a design tuned for feeding its 12 cores efficiently, while the AMD's larger shared L3 pool benefits cross-core data sharing and latency-sensitive workloads.

Memory support also diverges. The AMD processor supports DDR5 memory on a dual-channel bus, delivering 89.6 GB/s of bandwidth, and it includes ECC memory support. The Qualcomm uses LPDDR5X memory, also dual-channel, but delivers 135.2 GB/s, a 50.9% bandwidth advantage. The AMD part supports ECC, which is a reliability feature absent from the Qualcomm. For embedded or server-adjacent workloads where data integrity matters, ECC support is a meaningful differentiator.

PCIe connectivity differs as well. The AMD processor provides Gen 4 with 20 lanes from the CPU, while the Qualcomm provides Gen 4 with 12 lanes. The AMD's additional PCIe lanes allow more expansion devices, storage drives, or accelerators to connect directly to the CPU. Integrated graphics also differ: the AMD uses Radeon 760M, while the Qualcomm uses Adreno X1-85. Socket compatibility is entirely separate, with the AMD on AMD Socket FP8 and the Qualcomm on Qualcomm BGA 2073.

Head-to-Head Benchmarks

The head-to-head benchmark array in the database is empty, and the win counts for both processors are zero. Likewise, neither processor has any individual benchmark scores recorded, and both sit at the 50th percentile relative to all CPUs. This means the quantitative comparison must be derived from architectural specifications rather than measured workload results.

The most decisive numbers come from clock speeds. The AMD part's boost clock of 5.00 GHz is 25.0% higher than the Qualcomm's 4.00 GHz boost. Its base clock of 4.30 GHz is 26.5% higher than the Qualcomm's 3.40 GHz base. For single-threaded performance, where frequency is the dominant factor, this creates a substantial theoretical gap. A workload that is latency-bound or dependent on a single core's speed will finish noticeably faster on the AMD chip.

Core count flips the advantage in the other direction. The Qualcomm has twice as many physical cores as the AMD: 12 versus 6. While both expose 12 threads, the Qualcomm does so with dedicated physical cores for each thread. The AMD relies on simultaneous multithreading, which shares execution resources between two threads per core. In workloads that scale linearly with core count, such as rendering, compilation, or scientific computing, the Qualcomm's 12 independent cores provide more raw parallel throughput. The AMD's 6 cores with 12 threads cannot match the sustained multi-core output of 12 physical cores, even if the AMD's cores run at higher clocks.

Memory bandwidth reinforces the Qualcomm's multi-core story. Its 135.2 GB/s versus 89.6 GB/s for the AMD represents a 50.9% advantage. In memory-bound workloads, where data movement rather than computation limits performance, this bandwidth gap can be decisive. The Qualcomm's LPDDR5X support also typically offers lower latency access patterns for the integrated GPU, although the database does not record specific graphics benchmarks.

The TDP difference adds context. The AMD runs at 45 watts versus 35 watts for the Qualcomm. This 10-watt gap means the AMD part is allotted more power for its 6 cores, potentially allowing them to sustain higher clocks under load. The Qualcomm must spread its 35-watt envelope across 12 cores, which caps per-core power and therefore per-core frequency. The data suggests the AMD is built for bursty, high-frequency responsiveness, while the Qualcomm is built for wide, efficient parallelism.

FAQ

Q: Which processor has the higher boost clock?

A: The AMD Ryzen Embedded 8645HS has a boost clock of 5.00 GHz, compared to 4.00 GHz for the Qualcomm Snapdragon X1E-80-100.

Q: How many cores does each processor have?

A: The AMD has 6 cores and 12 threads. The Qualcomm has 12 cores and 12 threads.

Q: Which processor supports ECC memory?

A: The AMD Ryzen Embedded 8645HS supports ECC memory. The Qualcomm Snapdragon X1E-80-100 does not.

Q: What is the memory bandwidth difference?

A: The Qualcomm delivers 135.2 GB/s, while the AMD provides 89.6 GB/s. This is a 50.9% advantage for the Qualcomm.

Q: What process node are both processors built on?

A: Both are built on a 4 nm process at TSMC.

Q: Which processor has more PCIe lanes?

A: The AMD provides 20 PCIe Gen 4 lanes from the CPU, while the Qualcomm provides 12 PCIe Gen 4 lanes.

The Verdict

The data points to two different use cases. The AMD Ryzen Embedded 8645HS is the better choice for single-threaded performance, latency-sensitive workloads, and applications that benefit from high burst clocks. Its 5.00 GHz boost clock, 4.30 GHz base clock, and 45-watt TDP indicate a design that prioritizes responsiveness. The ECC memory support and 20 PCIe lanes also make it suitable for embedded systems, industrial controllers, or compact servers where reliability and connectivity matter more than raw thread count.

The Qualcomm Snapdragon X1E-80-100 is the better choice for throughput-oriented, multi-threaded workloads. Its 12 physical cores, 135.2 GB/s memory bandwidth, and 35-watt TDP point toward sustained parallel performance and power efficiency. The larger L1 cache per core (288 KB) and 12 MB L2 per module suggest a design optimized for keeping many cores fed with data. For mobile workstations, content creation, or other workloads that scale across cores, the Qualcomm's architecture provides a wider execution path.

The absence of recorded benchmark scores means neither processor can claim a measured victory in this dataset. However, the specification data supports a clear division: the AMD wins on frequency, single-core speed, ECC support, and PCIe expansion, while the Qualcomm wins on core count, memory bandwidth, and power efficiency. Users who need maximum per-thread speed and system reliability should choose the AMD. Users who need parallel throughput and memory-heavy compute should choose the Qualcomm. Both hold the 50th percentile ranking among all CPUs, indicating they are statistically mid-pack overall, but their architectural strengths are complementary rather than overlapping.