AMD Ryzen 7 8840HX vs Qualcomm Snapdragon X2E-78-100 Comparison

The Verdict

The database contains complete benchmark measurements for the AMD Ryzen 7 8840HX, while the Qualcomm Snapdragon X2E-78-100 has no recorded scores in any tested workload. The AMD part holds a 94th percentile ranking among all CPUs, with an average benchmark score of 71,797 points across 13 tests. The Snapdragon sits at the 50th percentile with an average score of zero, meaning no performance data has been captured. For any user selecting between these two mobile processors, the choice is straightforward from the available evidence: the Ryzen 7 8840HX is the only option with quantifiable performance. The Snapdragon X2E-78-100 remains unmeasured, so its capabilities cannot be compared against the AMD part's recorded results.

Architecture Differences

The two processors diverge fundamentally in their construction. The AMD Ryzen 7 8840HX belongs to the 8000 series, uses Zen 4 architecture under the Dragon Range codename, and is built on a 5 nm process at TSMC. It packs 13,140 million transistors across a dual-die design measuring 2x 71 mm². The Qualcomm Snapdragon X2E-78-100 uses the Glymur codename, falls under the Snapdragon X2 Elite generation, and is fabricated on a more advanced 3 nm node, also by TSMC. Its die spans 220 mm², though the transistor count is not recorded in the database.

Core counts match at 12, but threading differs sharply. The AMD chip supports 24 threads, doubling its physical core count through simultaneous multithreading. The Snapdragon supports 12 threads, one per core, with no multithreading capability. Base clocks favor Qualcomm at 4.00 GHz versus AMD's 2.90 GHz, while the AMD part boosts to 5.10 GHz and the Snapdragon's boost clock is not listed. Thermal design power appears for the AMD at 55 watts, while the Snapdragon's TDP is unrecorded.

Cache hierarchies take different shapes. The AMD processor provides 64 KB of L1 per core, 1 MB of L2 per core, and 64 MB of shared L3 cache. The Snapdragon allocates 288 KB of L1 per core and 16 MB of shared L2, with no L3 cache listed. Memory support differs as well: AMD uses DDR5 on a dual-channel bus with 83.2 GB/s bandwidth, while Qualcomm uses LPDDR5X on a dual-channel bus with 152.4 GB/s bandwidth. Both reject ECC memory. PCIe lanes favor AMD at 28 Gen 5 lanes versus Qualcomm's 12 Gen 5 lanes. Integrated graphics are the Radeon 610M on the AMD side and the Adreno X2-85 on the Qualcomm side. The AMD chip has an unlocked multiplier; the Snapdragon does not.

Head-to-Head Benchmarks

No head-to-head benchmark records exist in the database for these two processors. The AMD Ryzen 7 8840HX has 13 individual benchmark scores, all from Cinebench R23 and PassMark test suites. The Qualcomm Snapdragon X2E-78-100 has zero benchmark entries across any test category. Consequently, there are no direct comparison numbers, no win counts (both sit at zero), and no delta percentages to report between the two parts.

The AMD processor's recorded results stand on their own. In Cinebench R23 multi-core, it scores 25,265 points, and in single-core, it scores 1,857 points. PassMark tests show 496,427 in data compression, 29,919 in data encryption, 36,527 in extended instructions, 304 in finding prime numbers, 86,747 in floating point math, 146,506 in integer math, 41,732 in multithread, 2,185 in physics, 57,971 in random string sorting, and 3,958 in single-thread performance. Its average benchmark score of 71,797 places it near several Intel rivals: the Intel Core Ultra 7 265KF averages 71,910 (0.2% behind the AMD part), the Intel Xeon Platinum 8270 averages 71,370 (0.6% ahead), the Intel Xeon 6517P averages 72,350 (0.8% behind), and the Intel Xeon 6724P averages 72,396 (0.8% behind).

The absence of Snapdragon measurements means the database cannot establish any comparative advantage or disadvantage between the two. The AMD chip's percentile ranking of 94 reflects its position against all CPUs, while the Snapdragon's 50th percentile is a default value tied to its lack of recorded data.

FAQ

Q: Which processor has more threads?

A: The AMD Ryzen 7 8840HX has 24 threads from 12 cores. The Qualcomm Snapdragon X2E-78-100 has 12 threads from 12 cores.

Q: What is the process node difference?

A: The AMD chip uses a 5 nm process at TSMC. The Snapdragon uses a 3 nm process, also at TSMC.

Q: How do their memory bandwidths compare?

A: The AMD Ryzen 7 8840HX supports dual-channel DDR5 with 83.2 GB/s bandwidth. The Snapdragon X2E-78-100 supports dual-channel LPDDR5X with 152.4 GB/s bandwidth, which is nearly double the AMD figure.

Q: Has the Snapdragon X2E-78-100 been benchmarked?

A: No. The database contains zero benchmark scores for the Snapdragon, resulting in an average benchmark score of 0 and a 50th percentile ranking. All 13 recorded benchmark scores belong to the AMD Ryzen 7 8840HX.

Q: What is the AMD chip's strongest recorded workload?

A: The highest single score is 496,427 in PassMark data compression. The lowest is 304 in PassMark find prime numbers.

Q: Are both processors unlocked for overclocking?

A: No. The AMD Ryzen 7 8840HX has an unlocked multiplier. The Qualcomm Snapdragon X2E-78-100 does not.

Where Each One Wins

The AMD Ryzen 7 8840HX wins every category where data exists, simply because it is the only processor with measurements. Its 12-core, 24-thread configuration delivers strong multi-threaded results, as shown by the 25,265 Cinebench R23 multi-core score and the 41,732 PassMark multithread score. The 5.10 GHz boost clock supports its single-thread performance, recorded at 1,857 in Cinebench R23 single-core and 3,958 in PassMark single-thread. The 64 MB shared L3 cache likely contributes to the 496,427 data compression score, which is the chip's highest individual result.

The Snapdragon X2E-78-100 has no recorded wins. Its 12 threads and 4.00 GHz base clock suggest it targets efficiency, but the database provides no benchmark evidence to confirm any advantage. Its 3 nm process, 152.4 GB/s memory bandwidth, and 288 KB L1 per core are structural advantages on paper, but none are validated by performance scores. The AMD part's 94th percentile ranking across all CPUs, compared to the Snapdragon's 50th percentile default, further underscores the lack of measurable output from the Qualcomm chip.

The use-case split, therefore, rests entirely on the AMD processor's results. Workloads that benefit from high thread counts, such as rendering or compilation, align with the 24-thread Ryzen part. Single-thread-heavy tasks align with its 5.10 GHz boost. Data-intensive operations align with its 64 MB L3 cache and 83.2 GB/s memory bandwidth. The Snapdragon cannot be assigned any workload advantage based on the available records.

Specification Differences

The two processors differ across nearly every listed specification. The AMD Ryzen 7 8840HX has 24 threads versus the Snapdragon X2E-78-100's 12. Base clocks are 2.90 GHz for AMD and 4.00 GHz for Qualcomm, while boost clocks are 5.10 GHz for AMD and unlisted for Qualcomm. TDP is 55 watts for AMD and unlisted for Qualcomm. Sockets differ: AMD Socket FL1 versus Qualcomm BGA 2343.

Process nodes differ at 5 nm for AMD and 3 nm for Qualcomm. Die size is 2x 71 mm² for AMD and 220 mm² for Qualcomm. Transistor count is 13,140 million for AMD and unlisted for Qualcomm. Cache configurations diverge: AMD uses 64 KB L1 per core, 1 MB L2 per core, and 64 MB shared L3; Qualcomm uses 288 KB L1 per core and 16 MB shared L2, with no L3 listed. Memory support is DDR5 for AMD and LPDDR5X for Qualcomm. Memory bandwidth is 83.2 GB/s for AMD and 152.4 GB/s for Qualcomm. PCIe lanes are 28 Gen 5 for AMD and 12 Gen 5 for Qualcomm. Integrated graphics are Radeon 610M for AMD and Adreno X2-85 for Qualcomm. The multiplier is unlocked for AMD and locked for Qualcomm. Release dates differ, with the AMD part dated 2025-04-22 and the Snapdragon dated 2026-04-05. Neither has a recorded launch MSRP. Both are marked as active production and neither supports ECC memory.