AMD Ryzen Threadripper 9980X vs Qualcomm Snapdragon X1E-78-100 Comparison

FAQ

Q: What are the core and thread counts of the AMD Ryzen Threadripper 9980X and the Qualcomm Snapdragon X1E-78-100?

A: The AMD Ryzen Threadripper 9980X has 64 cores and 128 threads. The Qualcomm Snapdragon X1E-78-100 has 12 cores and 12 threads.

Q: Which processor has a higher base clock speed?

A: The Qualcomm Snapdragon X1E-78-100 has a base clock of 3.40 GHz, which is higher than the AMD Ryzen Threadripper 9980X's base clock of 3.20 GHz.

Q: What is the difference in their memory bandwidth?

A: The AMD Ryzen Threadripper 9980X delivers 204.8 GB/s of memory bandwidth, while the Qualcomm Snapdragon X1E-78-100 delivers 135.2 GB/s.

Q: Do these processors support ECC memory?

A: Yes, the AMD Ryzen Threadripper 9980X supports ECC memory. The Qualcomm Snapdragon X1E-78-100 does not support ECC memory.

Q: What is the market segment for each processor?

A: The AMD Ryzen Threadripper 9980X is in the Desktop market segment, while the Qualcomm Snapdragon X1E-78-100 is in the Mobile market segment.

Q: What is the difference in their PCIe support?

A: The AMD Ryzen Threadripper 9980X supports PCIe Gen 5 with 80 lanes (CPU only). The Qualcomm Snapdragon X1E-78-100 supports PCIe Gen 4 with 12 lanes (CPU only).

Where Each One Wins

The benchmark data splits these two processors into entirely different performance domains. The AMD Ryzen Threadripper 9980X dominates every recorded multithreaded and single-threaded benchmark, while the Qualcomm Snapdragon X1E-78-100 has no recorded benchmark scores in the database.

The AMD Ryzen Threadripper 9980X shows overwhelming strength in heavily parallel workloads. Its Cinebench R15 multicore score of 13157, Cinebench R20 multicore score of 54822, and Cinebench R23 multicore score of 130529 demonstrate extreme scaling across its 128 threads. PassMark multithread results further confirm this, with a score of 141641. The data shows the processor excels at integer math with 872071 points and floating point math with 559003 points.

Single-thread performance also favors the AMD Ryzen Threadripper 9980X. The Cinebench R15 single-core score of 1857, Cinebench R20 single-core score of 7739, and Cinebench R23 single-core score of 18427 indicate strong per-core efficiency. PassMark single-thread score of 4537 reinforces this result.

Specialized workloads show the AMD Ryzen Threadripper 9980X leading across the board. Data compression scores 2974534, data encryption scores 157137, and extended instructions score 228959. The random string sorting test delivers 292083 points, while find prime numbers yields 769 points and physics scores 8001.

The Qualcomm Snapdragon X1E-78-100 presents no benchmark entries in the database, so no wins can be attributed to it through recorded measurements. Its 50th percentile ranking versus all CPUs stands far below the AMD Ryzen Threadripper 9980X's 99th percentile. The processor's 12 cores and 12 threads, combined with a 35 W TDP, position it for low-power mobile operation rather than high-throughput computing.

Architecture Differences

The AMD Ryzen Threadripper 9980X uses the Zen 5 architecture with the codename Shimada Peak, belonging to the 9000 series and the Ryzen Threadripper generation. The Qualcomm Snapdragon X1E-78-100 uses the Oryon codename within the Snapdragon X (Elite) generation.

Both processors are manufactured on a 4 nm process node at TSMC. The AMD Ryzen Threadripper 9980X contains 66,520 million transistors across a die size of 8x 70.6 mm². The Qualcomm Snapdragon X1E-78-100 has no transistor count or die size recorded in the database.

Cache hierarchies differ substantially. The AMD Ryzen Threadripper 9980X provides 64 KB of L1 cache per core, 1 MB of L2 cache per core, and 256 MB of L3 cache. The Qualcomm Snapdragon X1E-78-100 provides 288 KB of L1 cache per core, 12 MB of L2 cache per module, and 6 MB of shared L3 cache.

Memory architecture diverges completely. The AMD Ryzen Threadripper 9980X supports DDR5 memory over a quad-channel bus with 204.8 GB/s bandwidth and ECC support. The Qualcomm Snapdragon X1E-78-100 supports LPDDR5X memory over a dual-channel bus with 135.2 GB/s bandwidth and no ECC support.

The AMD Ryzen Threadripper 9980X integrates no graphics, while the Qualcomm Snapdragon X1E-78-100 includes the Adreno X1-85 integrated GPU. The AMD processor uses AMD Socket sTR5, the Qualcomm part uses Qualcomm BGA 2073.

PCIe capabilities differ by generation and lane count. The AMD Ryzen Threadripper 9980X offers PCIe Gen 5 with 80 lanes (CPU only), while the Qualcomm Snapdragon X1E-78-100 offers PCIe Gen 4 with 12 lanes (CPU only).

The AMD Ryzen Threadripper 9980X has an unlocked multiplier, allowing overclocking. The Qualcomm Snapdragon X1E-78-100 has a locked multiplier.

Specification Differences

The core counts represent the largest gap: 64 cores on the AMD Ryzen Threadripper 9980X versus 12 cores on the Qualcomm Snapdragon X1E-78-100. Thread counts follow the same pattern, with 128 threads versus 12 threads.

Base clocks differ, with the Qualcomm part running at 3.40 GHz and the AMD part at 3.20 GHz. The AMD Ryzen Threadripper 9980X has a boost clock of 5.40 GHz, while the Qualcomm Snapdragon X1E-78-100 has no boost clock recorded.

Thermal design power shows a major divergence: 350 W for the AMD Ryzen Threadripper 9980X versus 35 W for the Qualcomm Snapdragon X1E-78-100.

Memory support differs by type and channel count. The AMD Ryzen Threadripper 9980X uses DDR5 with quad-channel support, the Qualcomm Snapdragon X1E-78-100 uses LPDDR5X with dual-channel support.

ECC memory support is present on the AMD Ryzen Threadripper 9980X and absent on the Qualcomm Snapdragon X1E-78-100.

The AMD Ryzen Threadripper 9980X has a launch MSRP of $4999. No launch MSRP exists for the Qualcomm Snapdragon X1E-78-100.

Release dates differ: the AMD Ryzen Threadripper 9980X was released on 2025-07-29, the Qualcomm Snapdragon X1E-78-100 on 2024-04-23.

The AMD Ryzen Threadripper 9980X carries the part number 100-000001593, while the Qualcomm Snapdragon X1E-78-100 carries the part number X1E78100.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark entries between the AMD Ryzen Threadripper 9980X and the Qualcomm Snapdragon X1E-78-100. All recorded benchmark scores belong exclusively to the AMD processor.

The AMD Ryzen Threadripper 9980X's Cinebench R23 multicore score of 130529 places it in the top performance tier. Its Cinebench R20 multicore score of 54822 and Cinebench R15 multicore score of 13157 show consistent scaling across different Cinebench versions.

Single-thread results for the AMD Ryzen Threadripper 9980X remain strong: Cinebench R15 single-core at 1857, Cinebench R20 single-core at 7739, and Cinebench R23 single-core at 18427.

PassMark results for the AMD Ryzen Threadripper 9980X span multiple workload types. Integer math scores 872071, floating point math scores 559003, and extended instructions score 228959. Data compression reaches 2974534, data encryption reaches 157137, and random string sorting reaches 292083. The multithread score is 141641, physics is 8001, single-thread is 4537, and find prime numbers is 769.

The average benchmark score for the AMD Ryzen Threadripper 9980X is 321753, placing it at the 99th percentile versus all CPUs. Its nearest rival, the AMD Ryzen Threadripper PRO 9985WX, has an average score of 320749, a 0.3% difference. The Intel Xeon 6781P scores 315524, 2% behind. The AMD EPYC 9575F scores 311774, 3.2% behind. The AMD EPYC 9734 scores 310619, 3.6% behind.

The Qualcomm Snapdragon X1E-78-100 has an average benchmark score of 0, a 50th percentile ranking versus all CPUs, and no nearest rivals recorded. Its benchmark array is empty, meaning no measured performance data exists in the database for this processor.

The performance gap between the two processors is defined by the absence of data on one side and the substantial data on the other. The AMD Ryzen Threadripper 9980X delivers measured results across 17 benchmark entries, while the Qualcomm Snapdragon X1E-78-100 delivers none. The architectural differences, including core count, memory bandwidth, cache size, and PCIe lanes, align with the recorded performance differential. The desktop-market AMD processor with 128 threads and 204.8 GB/s memory bandwidth stands in contrast to the mobile-market Qualcomm processor with 12 threads and 135.2 GB/s memory bandwidth.