AMD Ryzen 5 40 vs Qualcomm Snapdragon X2E-78-100 Comparison
AMD Ryzen 5 40
Snapdragon X2E-78-100
PERFORMANCE BENCHMARKS
Analysis: AMD Ryzen 5 40 vs Qualcomm Snapdragon X2E-78-100
FAQ
Q: How do the two processors compare in terms of core count and threading?
A: The AMD Ryzen 5 40 has 4 cores and 8 threads, while the Qualcomm Snapdragon X2E-78-100 has 12 cores and 12 threads. The Snapdragon has no simultaneous multithreading, so its thread count equals its core count.
Q: What are the clock speeds of each processor?
A: The AMD Ryzen 5 40 has a base clock of 2.80 GHz and a boost clock of 4.30 GHz. The Qualcomm Snapdragon X2E-78-100 has a base clock of 4.00 GHz, and no boost clock is recorded in the database.
Q: Which processor has the larger cache configuration?
A: The Snapdragon X2E-78-100 has a larger L1 cache at 288 KB per core and a shared L2 cache of 16 MB. The Ryzen 5 40 has 64 KB of L1 per core, 512 KB of L2 per core, and 4 MB of shared L3 cache. The Snapdragon has no L3 cache listed.
Q: How do the memory systems differ?
A: The Ryzen 5 40 supports LPDDR5 memory with dual-channel configuration and a bandwidth of 88.0 GB/s. The Snapdragon X2E-78-100 supports LPDDR5X memory, also dual-channel, with a bandwidth of 152.4 GB/s. Neither processor supports ECC memory.
Q: What are the manufacturing process nodes?
A: The AMD Ryzen 5 40 is built on a 6 nm process at TSMC with a die size of 100 mm². The Qualcomm Snapdragon X2E-78-100 is built on a 3 nm process at TSMC with a die size of 220 mm².
Q: What PCIe capabilities does each processor have?
A: The Ryzen 5 40 uses PCIe Gen 3 with 4 lanes (CPU only). The Snapdragon X2E-78-100 uses PCIe Gen 5 with 12 lanes (CPU only).
The Verdict
The data in the database shows two processors aimed at the mobile segment but with very different measurement profiles. The AMD Ryzen 5 40 has a full set of benchmark results, while the Qualcomm Snapdragon X2E-78-100 has no recorded benchmark scores, so direct numeric comparison is limited to specifications.
For users who require measured performance data, the Ryzen 5 40 is the only option with recorded results. It achieves an average benchmark score of 15882 and sits at the 70th percentile among all CPUs in the database. Its nearest rivals include the AMD EPYC 75F3 with an average score of 15859 (0.1% behind), the Intel Core Ultra 5 134U at 15910 (0.2% ahead), the AMD EPYC 9354P at 15826 (0.4% behind), and the AMD EPYC 9334 at 15940 (0.4% ahead). These deltas are all within half a percent, placing the Ryzen 5 40 in a tightly clustered performance band.
The Snapdragon X2E-78-100 carries a 50th percentile ranking with an average benchmark score of 0, meaning there are no recorded measurements to validate its standing. Its specification sheet shows 12 cores, a 4.00 GHz base clock, a 3 nm process node, and 152.4 GB/s of memory bandwidth, but without benchmark data, these features cannot be translated into performance conclusions.
The choice depends on whether the user prioritizes verified benchmark results or the raw specification advantages of the newer Snapdragon design. The Ryzen 5 40 delivers a complete, measured profile with strong single-thread scores, while the Snapdragon X2E-78-100 offers a larger core count, faster base clock, and higher memory bandwidth, but no recorded performance data to confirm its standing.
Head-to-Head Benchmarks
The database contains no head-to-head benchmark comparisons between the AMD Ryzen 5 40 and the Qualcomm Snapdragon X2E-78-100. The wins counter shows 0 for both processors, and the head-to-head benchmark array is empty.
For the Ryzen 5 40 alone, the recorded measurements show a Cinebench R23 multi-core score of 4841 and a single-core score of 1150. In Cinebench R15, it scores 790 multi-core and 165.5 single-core. PassMark results include a multi-thread score of 9341, a single-thread score of 2477, integer math at 31598, floating point math at 15194, and extended instructions at 6437. Data compression scores 141533, data encryption scores 6646, and random string sorting scores 15124. Physics processing scores 432, and find prime numbers scores 20.
These numbers indicate a processor with moderate multi-threaded capability and a relatively stronger single-thread profile. The ratio between multi-thread and single-thread PassMark scores (9341 versus 2477) shows a scaling factor of roughly 3.8x across 8 threads, which is consistent with a 4-core, 8-thread design that does not achieve perfect linear scaling.
The Snapdragon X2E-78-100 has no benchmark records in the database. Its average benchmark score is 0, and no nearest rivals are listed. Any attempt to compare measured performance between the two processors is impossible with the current data.
Specification Differences
The two processors differ across nearly every specification field recorded in the database.
Core and thread counts: the Ryzen 5 40 uses 4 cores and 8 threads, while the Snapdragon X2E-78-100 uses 12 cores and 12 threads. The Snapdragon has three times the core count but only 1.5 times the thread count, reflecting its lack of SMT.
Clock speeds: the Ryzen 5 40 has a base clock of 2.80 GHz and a boost clock of 4.30 GHz. The Snapdragon X2E-78-100 has a base clock of 4.00 GHz and no recorded boost clock. The Snapdragon's base clock is 1.2 GHz higher than the Ryzen's base clock, but the Ryzen's boost clock is 0.3 GHz higher than the Snapdragon's base clock.
Power and socket: the Ryzen 5 40 has a TDP of 15 watts and uses AMD Socket FT6. The Snapdragon X2E-78-100 has no TDP recorded and uses Qualcomm BGA 2343.
Process and die: the Ryzen 5 40 is on a 6 nm node with a 100 mm² die. The Snapdragon X2E-78-100 is on a 3 nm node with a 220 mm² die. The Snapdragon's die is 120 mm² larger despite the smaller process node, indicating a substantially more complex silicon layout.
Memory: the Ryzen 5 40 supports LPDDR5 with 88.0 GB/s bandwidth. The Snapdragon X2E-78-100 supports LPDDR5X with 152.4 GB/s bandwidth, a difference of 64.4 GB/s.
PCIe: the Ryzen 5 40 has PCIe Gen 3 with 4 lanes. The Snapdragon X2E-78-100 has PCIe Gen 5 with 12 lanes.
Integrated graphics: the Ryzen 5 40 uses a Radeon 610M. The Snapdragon X2E-78-100 uses an Adreno X2-85.
Release dates: the Ryzen 5 40 has a release date of 2025-09-30, while the Snapdragon X2E-78-100 has a release date of 2026-04-05.
Architecture Differences
The AMD Ryzen 5 40 uses the Zen 2 architecture under the Mendocino codename, listed as part of the Ryzen 5 generation. The process node is 6 nm at TSMC. Its cache hierarchy is per-core for L1 and L2, with 64 KB of L1 and 512 KB of L2 per core, plus a shared 4 MB L3 cache. This is a compact design with a 100 mm² die.
The Qualcomm Snapdragon X2E-78-100 uses the Glymur codename under the Snapdragon X2 (Elite) generation. No specific architecture name is recorded. The process node is 3 nm at TSMC, with a 220 mm² die. Its cache hierarchy differs significantly: 288 KB of L1 per core and a shared 16 MB L2 cache, with no L3 cache listed. The L1 allocation per core is 4.5 times larger than the Ryzen's, and the shared L2 is 4 times larger than the Ryzen's shared L3.
The memory controllers differ in supported type and bandwidth. The Ryzen uses LPDDR5, while the Snapdragon uses LPDDR5X, which accounts for the higher bandwidth figure. Both use dual-channel configurations.
The PCIe implementations reflect different generations and lane counts. The Ryzen 5 40 provides Gen 3 connectivity with 4 lanes, while the Snapdragon X2E-78-100 provides Gen 5 connectivity with 12 lanes. This represents a substantial difference in available I/O bandwidth for connected devices.
Neither processor has an unlocked multiplier. The Ryzen 5 40 has an unknown part number, while the Snapdragon X2E-78-100 has the part number X2E78100. Both are classified as mobile market segment and both are in active production.
Where Each One Wins
The AMD Ryzen 5 40 wins in the category of measured performance, since it is the only processor in this comparison with recorded benchmark data. Its 70th percentile ranking among all CPUs, supported by an average benchmark score of 15882, provides a concrete reference point. The single-thread PassMark score of 2477 and Cinebench R23 single-core score of 1150 indicate solid single-thread performance for a 15-watt mobile part. Its 4.30 GHz boost clock is the highest clock speed recorded for either processor.
The Qualcomm Snapdragon X2E-78-100 wins in raw specification comparisons. It has 12 cores versus 4, a 4.00 GHz base clock versus 2.80 GHz, 16 MB of shared L2 versus 4 MB of L3, 152.4 GB/s memory bandwidth versus 88.0 GB/s, PCIe Gen 5 with 12 lanes versus Gen 3 with 4 lanes, and a 3 nm process versus 6 nm. The LPDDR5X memory support and the larger 220 mm² die also favor the Snapdragon on paper.
For workloads that depend on verified multi-threaded performance, the Ryzen 5 40 has the only available data. The Cinebench R23 multi-core score of 4841 and PassMark multi-thread score of 9341 can be used as reference points, but the absence of any Snapdragon benchmark results means no direct comparison is possible.
For workloads that depend on memory bandwidth, PCIe throughput, or core count, the Snapdragon X2E-78-100 has the specification advantage. The 152.4 GB/s bandwidth is 1.7 times the Ryzen's 88.0 GB/s. The 12 PCIe Gen 5 lanes provide both more lanes and a newer generation than the Ryzen's 4 Gen 3 lanes. The 12 cores offer more parallel processing capacity than the 4-core Ryzen, though the lack of SMT on the Snapdragon limits its thread count to 12.
The database does not support a definitive performance winner because the Snapdragon X2E-78-100 has no recorded measurements. The Ryzen 5 40 is the only processor in this comparison with benchmark results, while the Snapdragon remains a specification-only entry.