AMD Ryzen 5 PRO 8640HS vs Qualcomm Snapdragon X1E-78-100 Comparison

Q: What is the core and thread count difference between the AMD Ryzen 5 PRO 8640HS and the Qualcomm Snapdragon X1E-78-100?

A: The AMD Ryzen 5 PRO 8640HS has 6 cores and 12 threads, while the Qualcomm Snapdragon X1E-78-100 has 12 cores and 12 threads. Both processors are designed for mobile devices.

Q: How do the base clock speeds compare between the two processors?

A: The AMD Ryzen 5 PRO 8640HS has a base clock of 3.50 GHz and a boost clock of 4.90 GHz. The Qualcomm Snapdragon X1E-78-100 has a base clock of 3.40 GHz and no listed boost clock in the database.

Q: What are the memory bandwidth specifications for each processor?

A: The AMD Ryzen 5 PRO 8640HS has a memory bandwidth of 89.6 GB/s, while the Qualcomm Snapdragon X1E-78-100 has a higher memory bandwidth of 135.2 GB/s. Both use dual-channel memory buses.

Q: Which processor supports ECC memory?

A: The AMD Ryzen 5 PRO 8640HS supports ECC memory, while the Qualcomm Snapdragon X1E-78-100 does not. This makes the AMD part more suitable for error-sensitive workloads.

Q: What are the process node and foundry details for both processors?

A: Both processors use a 4 nm process node manufactured by TSMC. The AMD Ryzen 5 PRO 8640HS has a die size of 178 mm² and contains 25,000 million transistors, while the Qualcomm Snapdragon X1E-78-100 has no listed die size or transistor count.

Q: What integrated graphics do the two processors feature?

A: The AMD Ryzen 5 PRO 8640HS uses the Radeon 760M integrated graphics, while the Qualcomm Snapdragon X1E-78-100 uses the Adreno X1-85.

Where Each One Wins

The recorded data shows a clear split between the two processors based on available benchmark results. The AMD Ryzen 5 PRO 8640HS has a full suite of 17 benchmark scores across Cinebench R15, R20, R23, and PassMark tests, while the Qualcomm Snapdragon X1E-78-100 has no benchmark entries in the database. This absence of measured performance data for the Qualcomm part means that all direct performance comparisons must rely solely on the AMD processor's recorded scores against its nearest rivals.

The AMD Ryzen 5 PRO 8640HS achieves an average benchmark score of 28,478 across its measured tests, placing it in the 80th percentile of all CPUs in the database. Its nearest rivals include the Intel Xeon E-2436 with an average score of 28,530, the AMD Ryzen 7 PRO 6850HS with 28,549, the Intel Core 5 220H with 28,574, and the AMD Ryzen 7 PRO 6850U with 28,379. The delta percentages show that the Ryzen 5 PRO 8640HS trails the Xeon E-2436 and Ryzen 7 PRO 6850HS by 0.2 percent each, trails the Core 5 220H by 0.3 percent, and leads the Ryzen 7 PRO 6850U by 0.3 percent. These margins are extremely tight, indicating that the AMD processor competes directly with mid-range mobile and workstation parts from the same generation.

The Qualcomm Snapdragon X1E-78-100 holds a 50th percentile ranking among all CPUs, but with an average benchmark score of zero and no nearest rivals listed, the database provides no evidence of its actual computational performance. The Qualcomm part does win on memory bandwidth, however, with 135.2 GB/s compared to the AMD processor's 89.6 GB/s, which represents a 50 percent higher bandwidth figure. This suggests an advantage in memory-intensive workloads, though no benchmark data confirms this in practice.

The AMD processor wins on single-thread performance based on its measured scores. The Cinebench R23 single-core score of 2,555 points, Cinebench R20 single-core score of 1,073, and Cinebench R15 single-core score of 257 all reflect strong per-core performance. The PassMark single-thread score of 3,561 reinforces this picture. The Qualcomm part has no recorded scores to challenge these results.

Architecture Differences

The architectural split between the two processors is substantial. The AMD Ryzen 5 PRO 8640HS uses the Zen 4 architecture under the Hawk Point codename, part of the 8000 series generation. The Qualcomm Snapdragon X1E-78-100 uses the Oryon codename under the Snapdragon X Elite generation. Both share a 4 nm process node from TSMC, but their internal designs diverge significantly.

Cache hierarchies differ sharply. The AMD processor has 64 KB of L1 cache per core, 1 MB of L2 cache per core, and 16 MB of shared L3 cache. The Qualcomm processor has 288 KB of L1 cache per core, 12 MB of L2 cache per module, and 6 MB of shared L3 cache. With 12 cores, the Qualcomm part's L1 cache totals more per core, but its L3 cache is smaller than the AMD processor's shared pool. The L2 organization also differs: AMD allocates per core, while Qualcomm allocates per module, implying a clustered core design.

The memory controllers diverge as well. The AMD Ryzen 5 PRO 8640HS supports DDR5 memory, while the Qualcomm Snapdragon X1E-78-100 supports LPDDR5X. Both use dual-channel buses, but the Qualcomm part achieves 135.2 GB/s versus the AMD part's 89.6 GB/s, a difference driven by the memory type and controller design. ECC memory support exists only on the AMD processor, adding a reliability feature absent from the Qualcomm part.

PCIe lane counts also differ. The AMD processor provides 20 Gen 4 lanes from the CPU, while the Qualcomm processor provides 12 Gen 4 lanes. This gives the AMD part more headroom for discrete GPUs, NVMe storage, and other expansion devices. The socket types are entirely different: AMD Socket FP7 for the Ryzen part and Qualcomm BGA 2073 for the Snapdragon part.

Integrated graphics differ by vendor and design. The AMD processor uses the Radeon 760M, while the Qualcomm part uses the Adreno X1-85. No benchmark scores exist for either GPU in the database, so their relative graphics performance cannot be quantified.

Specification Differences

The two processors differ across nearly every physical and electrical specification. The AMD Ryzen 5 PRO 8640HS has 6 cores and 12 threads, while the Qualcomm Snapdragon X1E-78-100 has 12 cores and 12 threads, making the Qualcomm part a 12-core design with no simultaneous multithreading. The AMD part's base clock is 3.50 GHz versus 3.40 GHz for the Qualcomm part, and the AMD part has a boost clock of 4.90 GHz while the Qualcomm part has no recorded boost clock.

Thermal design power differs: the AMD processor is rated at 28 W, while the Qualcomm processor is rated at 35 W. The Qualcomm part consumes more power by specification, though no efficiency benchmarks exist to translate this into performance per watt. The process node is identical at 4 nm from TSMC, but the AMD part lists 25,000 million transistors on a 178 mm² die, while the Qualcomm part has no transistor count or die size recorded.

Memory support shows DDR5 for AMD and LPDDR5X for Qualcomm, with memory bandwidth favoring Qualcomm at 135.2 GB/s versus 89.6 GB/s. ECC memory is supported only on the AMD part. PCIe lanes favor AMD with 20 Gen 4 lanes versus 12 Gen 4 lanes for Qualcomm. The integrated graphics units are different models from different vendors, and the socket types are incompatible with each other.

The release dates are close: the AMD processor launched on 2024-04-15, and the Qualcomm processor launched on 2024-04-23, eight days later. Both are listed as active in production and both are mobile market segments. Neither has a multiplier unlocked, and neither has a launch MSRP in the database.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark results between the AMD Ryzen 5 PRO 8640HS and the Qualcomm Snapdragon X1E-78-100. The head-to-head benchmark array is empty, and the win counts for both processors are zero. The Qualcomm part also has an empty benchmark list, meaning its average benchmark score is zero and its nearest rivals array is empty.

The AMD Ryzen 5 PRO 8640HS, however, has a full set of measured scores that can be interpreted against its nearest rivals. The Cinebench R23 multicore score of 18,104 points represents the highest multi-threaded result in its benchmark suite. The Cinebench R20 multicore score is 7,603, and the Cinebench R15 multicore score is 1,824. These scores place the AMD processor within 0.3 percent of its nearest rivals, all of which are Intel or AMD parts with similar average scores.

Single-core performance for the AMD processor shows strength in the Cinebench R23 single-core test with 2,555 points, Cinebench R20 single-core with 1,073, and Cinebench R15 single-core with 257. The PassMark single-thread score of 3,561 and the PassMark single-thread score of 3,561 (recorded twice under slightly different test names) both confirm the same result. The PassMark multithread score of 21,465 further supports the multicore capability.

PassMark-specific workloads reveal specific strengths. The data compression score is 246,446, the data encryption score is 14,962, and the extended instructions score is 18,507. The floating point math score is 43,019, while the integer math score is 69,839. The find prime numbers score is 71, the physics score is 1,043, and the random string sorting score is 30,235. These scores show a balanced set of capabilities across integer, floating-point, and memory-intensive operations.

The AMD processor's average benchmark score of 28,478 places it in the 80th percentile of all CPUs in the database. Its nearest rival, the Intel Xeon E-2436, scores 28,530 on average, a delta of negative 0.2 percent, meaning the AMD part is essentially tied with that server-oriented chip. The AMD Ryzen 7 PRO 6850HS scores 28,549, also a negative 0.2 percent delta. The Intel Core 5 220H scores 28,574, a negative 0.3 percent delta. The AMD Ryzen 7 PRO 6850U scores 28,379, a positive 0.3 percent delta for the 8640HS. These margins are within fractions of a percent, indicating that the 8640HS delivers performance parity with its closest competitors.

The Qualcomm Snapdragon X1E-78-100 has no measured scores to compare. Its 50th percentile ranking is based on no recorded benchmark data, so any statement about its computational performance relative to the AMD part would lack evidence. The only quantifiable advantages for the Qualcomm part come from its memory bandwidth of 135.2 GB/s and its higher core count of 12, but neither translates into a benchmark score in the database.