AMD Ryzen 5 PRO 8540U vs Qualcomm Snapdragon X1P-66-100 Comparison

Head-to-Head Benchmarks

The recorded data presents an unusual comparison: the AMD Ryzen 5 PRO 8540U has a full suite of benchmark scores, while the Qualcomm Snapdragon X1P-66-100 has no benchmark entries in the database. This means the head-to-head analysis relies entirely on the AMD processor's measured performance and its position relative to established rivals, with the Qualcomm chip assessed through its architectural specifications and overall percentile ranking.

The AMD Ryzen 5 PRO 8540U delivers a Cinebench R23 multicore score of 15456 and a single-core score of 2182. In Cinebench R20, it records 6491 multicore and 916 single-core. The older Cinebench R15 test shows 1557 multicore and 219 single-core. These results place the processor at the 76th percentile among all CPUs in the database, with an average benchmark score of 23709.

The nearest rivals in the database provide context for the AMD chip's standing. The Intel Core i5-11500 averages 23718, a 0% delta, meaning the Ryzen 5 PRO 8540U and this Intel part are statistically tied. The Intel Xeon 6333P averages 23823, which is 0.5% higher than the AMD chip. The Intel Core 3 100HL averages 23545, coming in 0.7% lower. The AMD Ryzen 7 8840U averages 23982, outperforming the 8540U by 1.1%. These small deltas indicate the Ryzen 5 PRO 8540U sits in a tight competitive cluster where no single rival holds a decisive edge.

The Qualcomm Snapdragon X1P-66-100, by contrast, has no benchmark scores recorded. Its percentile ranking is 50, well below the AMD chip's 76th percentile. Without measured scores, the database cannot quantify how the two processors compare in rendering, encryption, or math workloads. The Qualcomm chip's absence from the benchmark table is itself a significant data point: it has not been evaluated under the same test conditions.

Architecture Differences

The two processors diverge sharply in their underlying designs. The AMD Ryzen 5 PRO 8540U uses the Zen 4 architecture under the Hawk Point codename, part of the 8000 series. It is built on a 4 nm process at TSMC, with 20,900 million transistors on a 137 mm² die. The Qualcomm Snapdragon X1P-66-100 uses the Oryon codename under the Snapdragon X (Plus) generation, also on a 4 nm process at TSMC, but the database records no transistor count or die size for it.

Core and thread counts differ substantially. The AMD chip has 6 cores and 12 threads, while the Qualcomm chip has 10 cores and 10 threads. The Qualcomm part has no simultaneous multithreading, meaning each core handles a single thread. The AMD part doubles its threads through SMT. This structural difference matters for heavily threaded workloads, where the AMD chip can process 12 threads against the Qualcomm's 10.

Cache hierarchies are also distinct. The AMD Ryzen 5 PRO 8540U has 64 KB of L1 per core, 1 MB of L2 per core, and 16 MB of shared L3. The Qualcomm Snapdragon X1P-66-100 has 288 KB of L1 per core, 12 MB of L2 per module, and 6 MB of shared L3. The Qualcomm L1 cache is significantly larger per core, while the AMD chip offers more shared L3 and per-core L2. The AMD processor also has a larger total cache footprint when considering L2 and L3 combined.

Clock speeds tell a different story. The AMD chip has a base clock of 3.20 GHz and a boost clock of 4.90 GHz, a spread of 1.70 GHz. The Qualcomm chip has a base clock of 3.40 GHz and a boost clock of 4.00 GHz, a much narrower spread of 0.60 GHz. The AMD part can reach higher peak frequencies, while the Qualcomm part starts from a higher base frequency but has less headroom.

Memory and I/O configurations also differ. The AMD chip supports DDR5 memory with dual-channel access and 89.6 GB/s bandwidth, plus ECC memory support. The Qualcomm chip uses LPDDR5X memory with dual-channel access and 135.2 GB/s bandwidth, a 45.6 GB/s advantage, but lacks ECC. The AMD chip has 14 PCIe Gen 4 lanes from the CPU, while the Qualcomm chip has 12 PCIe Gen 4 lanes. The AMD processor fits an AMD Socket FP7, the Qualcomm uses Qualcomm BGA 2073. The AMD part integrates a Radeon 740M GPU, the Qualcomm part an Adreno X1-85. The AMD chip's TDP is 28 watts, the Qualcomm chip's TDP is 35 watts.

Where Each One Wins

The AMD Ryzen 5 PRO 8540U wins in every measured benchmark category because it is the only processor with recorded scores. Cinebench R23 multicore at 15456, PassMark integer math at 56738, PassMark floating point math at 34865, PassMark multithread at 18218, and PassMark data compression at 205703 all come from the AMD chip. The Qualcomm Snapdragon X1P-66-100 has no scores to compare, so its wins cannot be established from benchmark results.

The Qualcomm chip does hold advantages in specifications that are not benchmark-derived. Its memory bandwidth of 135.2 GB/s exceeds the AMD chip's 89.6 GB/s, which could benefit memory-bound workloads if the processor can utilize that bandwidth. Its 10 cores provide a higher core count than the AMD chip's 6 cores, which could matter in workloads that scale linearly with cores but do not benefit from SMT. Its larger per-core L1 cache of 288 KB versus 64 KB could reduce memory latency in single-threaded access patterns.

The AMD chip has its own specification advantages. Its boost clock of 4.90 GHz is 0.90 GHz higher than the Qualcomm chip's 4.00 GHz, which typically translates into stronger single-threaded performance in frequency-sensitive tasks. Its 12 threads exceed the Qualcomm chip's 10 threads, helping in workloads that respond to SMT. Its ECC memory support is absent on the Qualcomm side, a meaningful feature for reliability-sensitive deployments. Its lower TDP of 28 watts versus 35 watts suggests a more power-efficient design, though the database records no power consumption measurements to confirm this.

The percentile rankings reinforce the AMD chip's stronger overall position. The Ryzen 5 PRO 8540U sits at the 76th percentile among all CPUs, while the Snapdragon X1P-66-100 sits at the 50th percentile. This 26-percentile gap indicates that, based on the database's aggregate metrics, the AMD processor is rated substantially higher in overall performance.

The Verdict

From the recorded data, the AMD Ryzen 5 PRO 8540U is the only processor with measured performance, and it performs at a level comparable to several established Intel and AMD parts. Its average benchmark score of 23709 puts it within 1.1% of the AMD Ryzen 7 8840U, within 0.5% of the Intel Xeon 6333P, and statistically tied with the Intel Core i5-11500. The Qualcomm Snapdragon X1P-66-100 has no benchmark scores, making a direct performance verdict impossible.

The AMD chip should be selected by anyone whose decision depends on verifiable benchmark results. Its 12 threads, 4.90 GHz boost clock, and 16 MB of shared L3 cache provide a coherent package for multithreaded and single-threaded work. The Qualcomm chip should be considered only if its specification advantages matter more than measured performance: higher memory bandwidth at 135.2 GB/s, a larger per-core L1 cache, and a higher core count of 10. The Qualcomm part's 50th percentile ranking suggests it is an average performer in the database's overall assessment, but without scores, the specifics of that ranking cannot be examined.

The database shows a clear asymmetry. One processor has been thoroughly benchmarked and ranks in the upper quartile of all CPUs. The other has no benchmark entries and ranks at the median. For users who prioritize tested performance, the AMD Ryzen 5 PRO 8540U is the data-supported choice. For users who prioritize the Qualcomm chip's higher memory bandwidth or core count, the decision rests on unmeasured potential rather than recorded results.

FAQ

Q: Which processor has a higher boost clock?

A: The AMD Ryzen 5 PRO 8540U boosts to 4.90 GHz, while the Qualcomm Snapdragon X1P-66-100 boosts to 4.00 GHz.

Q: How many cores and threads does each processor have?

A: The AMD Ryzen 5 PRO 8540U has 6 cores and 12 threads. The Qualcomm Snapdragon X1P-66-100 has 10 cores and 10 threads.

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

A: The Qualcomm Snapdragon X1P-66-100 has 135.2 GB/s of memory bandwidth, while the AMD Ryzen 5 PRO 8540U has 89.6 GB/s, a difference of 45.6 GB/s in the Qualcomm chip's favor.

Q: Does either processor support ECC memory?

A: The AMD Ryzen 5 PRO 8540U supports ECC memory. The Qualcomm Snapdragon X1P-66-100 does not.

Q: What are the percentile rankings for each processor?

A: The AMD Ryzen 5 PRO 8540U ranks at the 76th percentile among all CPUs. The Qualcomm Snapdragon X1P-66-100 ranks at the 50th percentile.

Q: Which processor has more L3 cache?

A: The AMD Ryzen 5 PRO 8540U has 16 MB of shared L3 cache, while the Qualcomm Snapdragon X1P-66-100 has 6 MB of shared L3 cache.