AMD Ryzen Embedded 8645HS vs Qualcomm Snapdragon X2E-88-100 Comparison

The Verdict

The AMD Ryzen Embedded 8645HS and Qualcomm Snapdragon X2E-88-100 target distinctly different mobile workloads, and the recorded database entries show no direct benchmark overlap between them. The AMD part is a 6-core, 12-thread Zen 4 processor built for conventional x86 software, while the Qualcomm part is an 18-core, 18-thread Arm-based design with a newer process node and substantially higher memory bandwidth. Neither part shows a competitive advantage in the head-to-head benchmark table because no shared benchmarks exist in the database; both sit at the 50th percentile among all CPUs with an average benchmark score of zero. For a system integrator choosing between them, the decision rests entirely on software compatibility and platform requirements. The AMD processor suits applications that rely on mature x86 instruction sets, ECC memory validation, and a 45 W TDP envelope. The Qualcomm processor suits workloads that can leverage 18 physical cores, LPDDR5X memory, and PCIe Gen 5 connectivity. The data does not indicate a performance winner; it indicates two different platform philosophies.

Architecture Differences

The AMD Ryzen Embedded 8645HS uses the Zen 4 architecture under the Hawk Point codename, belonging to the 8000 series and the Ryzen Embedded generation. It is fabricated on a 4 nm process at TSMC, with 25,000 million transistors on a 178 mm² die. The CPU integrates 6 cores and 12 threads, with a base clock of 4.30 GHz and a boost clock of 5.00 GHz. Its thermal design power is 45 W. The cache hierarchy consists of 64 KB of L1 per core, 1 MB of L2 per core, and 16 MB of shared L3. Memory support is DDR5 over a dual-channel bus, yielding 89.6 GB/s of bandwidth, and ECC memory is supported. The platform uses AMD Socket FP8 and provides PCIe Gen 4 with 20 lanes from the CPU. Integrated graphics come from the Radeon 760M.

The Qualcomm Snapdragon X2E-88-100 belongs to the Snapdragon X2 generation under the Glymur codename. It is fabricated on a 3 nm process at TSMC, with a die size of 220 mm²; transistor count is not recorded. The CPU provides 18 cores and 18 threads, indicating no simultaneous multithreading. Base clock is 4.00 GHz and boost clock is 4.70 GHz. The TDP is not recorded. Cache structure is different: 288 KB of L1 per core and 16 MB of L2 per module, with no L3 data recorded. Memory support is LPDDR5X over a dual-channel bus, delivering 152.4 GB/s, which is 70% higher than the AMD part’s 89.6 GB/s. ECC memory is not supported. The socket is Qualcomm BGA 2343, and PCIe support is Gen 5 with 12 lanes from the CPU. Integrated graphics use the Adreno X2-90.

The process node difference is one full step: 3 nm versus 4 nm. The Qualcomm die is larger by 42 mm², despite having no recorded transistor count. The AMD part has a higher boost clock by 0.30 GHz, but the Qualcomm part has three times the core count. The Qualcomm part also uses a per-module L2 arrangement rather than per-core L1 and per-core L2, which reflects a different cache management strategy. The AMD part is the only one of the two with ECC support, a meaningful differentiator for embedded and reliability-focused deployments. The PCIe generation gap is also notable: AMD offers Gen 4 with 20 lanes, Qualcomm offers Gen 5 with 12 lanes, so the AMD part provides more total lanes while the Qualcomm part provides a newer generation with higher per-lane throughput. Release dates differ as well: the AMD processor entered production in April 2024, while the Qualcomm processor is dated April 2026. Both are listed as active production parts.

Where Each One Wins

The AMD Ryzen Embedded 8645HS wins in scenarios that require high single-thread clock rates. Its 5.00 GHz boost clock exceeds the Qualcomm part’s 4.70 GHz boost by 0.30 GHz, which can benefit latency-sensitive workloads that depend on sequential execution. The AMD part also wins on thread-count flexibility: 12 threads from 6 cores with simultaneous multithreading versus 18 threads from 18 cores without it. For software that scales poorly beyond a handful of threads, the AMD part’s higher clocks and mature x86 ecosystem offer a more predictable path. ECC memory support is exclusive to the AMD processor, making it the only choice in this pairing for systems that require error-correcting memory. The 45 W TDP provides a clear power envelope for thermal design, whereas the Qualcomm part’s TDP is unrecorded, leaving platform power planning uncertain. The AMD part also integrates Radeon 760M graphics, and it uses AMD Socket FP8, which is a known embedded platform.

The Qualcomm Snapdragon X2E-88-100 wins in raw core count and memory throughput. With 18 cores versus 6, it presents a 3-to-1 advantage in physical cores, which can benefit highly parallel workloads such as server-style multitasking, containerized environments, or compilation farms that can saturate all available threads. Its memory bandwidth of 152.4 GB/s is 70% higher than the AMD part’s 89.6 GB/s, which matters for data-intensive applications that stream large datasets through the memory controller. The 3 nm process node gives the Qualcomm part a fabrication advantage that may translate to improved efficiency per operation, although the database does not record power consumption to confirm this. PCIe Gen 5 connectivity with 12 lanes offers newer I/O bandwidth per lane compared to the AMD part’s PCIe Gen 4 with 20 lanes. The LPDDR5X memory support is also a differentiator, as it typically allows for lower-power memory in mobile designs, though the database records no power figures. The Adreno X2-90 integrated graphics are the Qualcomm part’s display and compute solution.

Neither part has recorded benchmark wins in the head-to-head table, so the database provides no empirical performance separation between the two. The wins described above are architectural and platform-level, derived from the recorded specifications rather than from measured scores.

FAQ

Q: Which processor has more cores?

A: The Qualcomm Snapdragon X2E-88-100 has 18 cores and 18 threads. The AMD Ryzen Embedded 8645HS has 6 cores and 12 threads.

Q: Does either processor support ECC memory?

A: Only the AMD Ryzen Embedded 8645HS supports ECC memory. The Qualcomm Snapdragon X2E-88-100 does not.

Q: What is the memory bandwidth difference between the two?

A: The Qualcomm Snapdragon X2E-88-100 provides 152.4 GB/s of memory bandwidth, while the AMD Ryzen Embedded 8645HS provides 89.6 GB/s. The Qualcomm part’s bandwidth is 62.8 GB/s higher.

Q: Which processor has the higher boost clock?

A: The AMD Ryzen Embedded 8645HS has a boost clock of 5.00 GHz, which is 0.30 GHz higher than the Qualcomm Snapdragon X2E-88-100’s 4.70 GHz boost clock.

Q: What process nodes are used for each processor?

A: The AMD Ryzen Embedded 8645HS uses a 4 nm process, while the Qualcomm Snapdragon X2E-88-100 uses a 3 nm process. Both are fabricated by TSMC.

Q: Do both processors use the same PCIe generation?

A: No. The AMD Ryzen Embedded 8645HS uses PCIe Gen 4 with 20 lanes, while the Qualcomm Snapdragon X2E-88-100 uses PCIe Gen 5 with 12 lanes.

Q: Are both processors currently in production?

A: Yes, both are listed as active production parts. The AMD processor has a release date of April 2024, and the Qualcomm processor has a release date of April 2026.

Head-to-Head Benchmarks

The head-to-head benchmark table in the database is empty. There are no recorded benchmark scores for either processor, no comparative deltas, and no nearest rivals listed for either part. Both processors show an average benchmark score of zero and a percentile rank of 50 among all CPUs. This absence of measured data means the database cannot confirm any performance advantage for either processor in real workloads. The interpretation of relative strength must therefore come from the architectural records.

The largest quantitative gap in the specifications is core count. The Qualcomm Snapdragon X2E-88-100 provides 18 cores against the AMD Ryzen Embedded 8645HS’s 6 cores, a difference of 12 cores. Thread count is closer: 18 threads versus 12 threads, a difference of 6 threads, because the AMD part uses simultaneous multithreading to double its thread count while the Qualcomm part does not. This suggests that the AMD part can present competitive thread counts for moderately parallel software, but the Qualcomm part has three times the physical core inventory for workloads that require true core-level parallelism.

Memory bandwidth shows the next largest gap. The Qualcomm part records 152.4 GB/s, which is 62.8 GB/s higher than the AMD part’s 89.6 GB/s. In percentage terms, the Qualcomm part delivers 70% more bandwidth. This is a substantial difference for workloads that are memory-bound, such as large matrix operations, data analytics, or high-throughput networking applications. The AMD part’s bandwidth, while lower, is still paired with ECC support, which the Qualcomm part lacks. A system that needs both high bandwidth and ECC validation cannot use the Qualcomm part, because ECC is not supported there.

Clock speed favors the AMD part. The AMD boost clock of 5.00 GHz is 0.30 GHz higher than the Qualcomm boost clock of 4.70 GHz. The base clocks are closer: 4.30 GHz for AMD versus 4.00 GHz for Qualcomm, a 0.30 GHz difference as well. These clock advantages may help the AMD part in lightly threaded workloads, but the database does not include measured performance to confirm whether the clock advantage translates into actual benchmark wins.

Process technology favors the Qualcomm part. Its 3 nm node is one step ahead of the AMD part’s 4 nm node, and its die size is 220 mm² versus 178 mm². The larger die on a smaller node suggests a more complex design, though the transistor count for the Qualcomm part is not recorded, so transistor density cannot be calculated. The AMD part’s transistor count of 25,000 million on a 178 mm² die gives a density figure that the Qualcomm part cannot be compared against due to missing data.

PCIe capabilities split the difference. The AMD part provides 20 lanes of PCIe Gen 4, while the Qualcomm part provides 12 lanes of PCIe Gen 5. The AMD part offers 8 more lanes, which supports more simultaneous I/O devices. The Qualcomm part offers a newer generation, which doubles the per-lane data rate in its specification, though the database records no measured throughput. Cache structure also differs: the AMD part has 16 MB of shared L3, while the Qualcomm part has no recorded L3 and instead uses 16 MB of L2 per module. The AMD part’s L3 is a shared pool across all cores, while the Qualcomm part’s L2-per-module arrangement localizes cache access.

The integrated graphics differ by brand and model: Radeon 760M on the AMD side, Adreno X2-90 on the Qualcomm side. The database records no graphics benchmarks for either, so no comparative graphics performance can be stated. Memory type also differs: DDR5 for AMD, LPDDR5X for Qualcomm. The AMD part uses AMD Socket FP8, while the Qualcomm part uses Qualcomm BGA 2343. The part number for the Qualcomm processor is recorded as X2E88100, while the AMD part’s part number is unknown.

In summary, the recorded data shows a clear architectural split. The AMD Ryzen Embedded 8645HS offers higher clocks, ECC support, more PCIe lanes, and a lower TDP record. The Qualcomm Snapdragon X2E-88-100 offers more cores, higher memory bandwidth, a newer process node, and PCIe Gen 5. Without benchmark scores, neither part can be declared faster. The database’s empty head-to-head table and zero scores for both parts confirm that no measured comparison exists yet. The only definitive statements available are those drawn from the specification fields, which describe two different design priorities rather than a single performance hierarchy.