Intel Core 7 251E vs Qualcomm Snapdragon X1P-42-100 Comparison

FAQ

Q: How do the core counts differ between these two processors?

A: The Intel Core 7 251E has 24 cores and 32 threads, while the Qualcomm Snapdragon X1P-42-100 has 8 cores and 8 threads. This is a substantial difference in parallel execution capacity, with Intel providing three times the core count and four times the thread count.

Q: Which processor has the higher base clock speed?

A: The Qualcomm Snapdragon X1P-42-100 has a base clock of 3.40 GHz, which is higher than the Intel Core 7 251E's base clock of 2.10 GHz. However, the Intel part has a boost clock of 5.60 GHz, while the Qualcomm part does not have a recorded boost clock in the database.

Q: What is the thermal design power for each processor?

A: The Intel Core 7 251E has a TDP of 65 watts, while the Qualcomm Snapdragon X1P-42-100 has a TDP of 30 watts. The Qualcomm processor is rated for less than half the thermal envelope of the Intel processor.

Q: Which processor supports ECC memory?

A: The Intel Core 7 251E supports ECC memory, while the Qualcomm Snapdragon X1P-42-100 does not. This makes the Intel part more suitable for workloads where memory error correction is required.

Q: What memory types does each processor support?

A: The Intel Core 7 251E supports DDR4 and DDR5 memory. The Qualcomm Snapdragon X1P-42-100 supports LPDDR5X memory. Both use a dual-channel memory bus, but the memory bandwidth figures differ: Intel records 89.6 GB/s, while Qualcomm records 135.2 GB/s.

Q: What are the integrated graphics solutions in these processors?

A: The Intel Core 7 251E uses UHD Graphics 770, while the Qualcomm Snapdragon X1P-42-100 uses Adreno X1-45. Both are integrated solutions, meaning neither processor requires a separate graphics card for basic display output.

Architecture Differences

The Intel Core 7 251E is built on a 10 nm process node fabricated by Intel, while the Qualcomm Snapdragon X1P-42-100 uses a 4 nm process node fabricated by TSMC. The smaller process node for the Qualcomm part is consistent with its lower TDP of 30 watts, whereas the Intel part operates at 65 watts. The die size for the Intel processor is 257 mm², while the Qualcomm processor has no recorded die size in the database.

Core architecture differs substantially. The Intel Core 7 251E belongs to the Bartlett Lake codename and the Core 7 (Bartlett Lake) generation. It provides 24 cores and 32 threads, suggesting a hybrid core arrangement where some cores support simultaneous multithreading and others do not. The Qualcomm Snapdragon X1P-42-100 uses the Oryon codename and belongs to the Snapdragon X (Plus) generation. It provides 8 cores and 8 threads, indicating no simultaneous multithreading capability.

Cache hierarchies are structured differently. The Intel part allocates 80 KB of L1 cache per core and 2 MB of L2 cache per core, with 36 MB of shared L3 cache. The Qualcomm part allocates 288 KB of L1 cache per core and 12 MB of L2 cache per module, with only 6 MB of shared L3 cache. The Intel processor has a much larger L3 cache, while the Qualcomm processor has larger per-core L1 allocations. Total cache capacity, including all levels, favors Intel due to the large shared L3 pool and per-core L2 allocations across 24 cores.

Memory controllers differ in supported memory types. Intel supports both DDR4 and DDR5, while Qualcomm supports only LPDDR5X. The recorded memory bandwidth for the Qualcomm processor is 135.2 GB/s, which is higher than the Intel part's 89.6 GB/s. Both use dual-channel memory buses. ECC memory support is present only on the Intel side.

PCI Express configurations also differ. The Intel Core 7 251E provides Gen 5 with 16 lanes (CPU only), while the Qualcomm Snapdragon X1P-42-100 provides Gen 4 with 12 lanes (CPU only). The Intel part has both a newer PCIe generation and more lanes.

The Intel processor uses Intel Socket 1700, while the Qualcomm part uses Qualcomm BGA 2073. This reflects the market segments: Intel is listed as Desktop, while Qualcomm is listed as Mobile. The Intel part has a launch date of January 12, 2025, while the Qualcomm part was released on August 27, 2024.

Neither processor has an unlocked multiplier. Both are listed as Active in production status. The Intel part has a recorded part number of SRQDUQ657, and the Qualcomm part has a part number of X1P42100.

The Verdict

The recorded data shows two processors aimed at different segments. The Intel Core 7 251E is a desktop processor with 24 cores, 32 threads, a 5.60 GHz boost clock, 65 watts TDP, and support for DDR4/DDR5 memory with ECC. The Qualcomm Snapdragon X1P-42-100 is a mobile processor with 8 cores, 8 threads, a 3.40 GHz base clock, 30 watts TDP, and support for LPDDR5X memory.

For workloads that scale with core count and thread count, the Intel processor has a clear structural advantage: 24 cores versus 8, and 32 threads versus 8. The Intel part also has a much larger shared L3 cache (36 MB versus 6 MB), which can benefit workloads with large working sets. The higher boost clock of 5.60 GHz on the Intel part provides additional single-thread headroom when the processor can reach that frequency.

The Qualcomm processor counters with a higher base clock (3.40 GHz versus 2.10 GHz), higher memory bandwidth (135.2 GB/s versus 89.6 GB/s), and a lower TDP (30 watts versus 65 watts). Its 4 nm process node from TSMC and mobile segment designation indicate a design optimized for power efficiency in portable devices. The larger per-core L1 cache (288 KB versus 80 KB) may also help latency-sensitive single-thread workloads.

The data does not include benchmark scores for either processor. The average benchmark score for both is recorded as 0, and the percentile versus all CPUs is 50 for both. No nearest rivals are listed, and no head-to-head benchmark wins are recorded. Therefore, conclusions must be drawn from architectural and specification differences rather than measured performance data.

Systems that require ECC memory support and the flexibility of DDR4 or DDR5 memory should look to the Intel Core 7 251E. Systems that prioritize lower power consumption, higher memory bandwidth, and a mobile form factor should look to the Qualcomm Snapdragon X1P-42-100. The Intel processor is the only one of the two with a recorded launch MSRP, listed at $384.

Specification Differences

The following fields differ between the two processors:

• Cores: Intel 24, Qualcomm 8
• Threads: Intel 32, Qualcomm 8
• Base clock: Intel 2.10 GHz, Qualcomm 3.40 GHz
• Boost clock: Intel 5.60 GHz, Qualcomm not recorded
• TDP: Intel 65 W, Qualcomm 30 W
• Socket: Intel Socket 1700, Qualcomm BGA 2073
• Codename: Intel Bartlett Lake, Qualcomm Oryon
• Generation: Intel Core 7 (Bartlett Lake), Qualcomm Snapdragon X (Plus)
• Process node: Intel 10 nm, Qualcomm 4 nm
• Foundry: Intel, TSMC
• Die size: Intel 257 mm², Qualcomm not recorded
• L1 cache: Intel 80 KB per core, Qualcomm 288 KB per core
• L2 cache: Intel 2 MB per core, Qualcomm 12 MB per module
• L3 cache: Intel 36 MB shared, Qualcomm 6 MB shared
• Memory support: Intel DDR4 and DDR5, Qualcomm LPDDR5X
• Memory bandwidth: Intel 89.6 GB/s, Qualcomm 135.2 GB/s
• ECC memory: Intel true, Qualcomm false
• PCIe: Intel Gen 5 with 16 lanes, Qualcomm Gen 4 with 12 lanes
• Integrated graphics: Intel UHD Graphics 770, Qualcomm Adreno X1-45
• Market segment: Intel Desktop, Qualcomm Mobile
• Release date: Intel 2025-01-12, Qualcomm 2024-08-27
• Launch MSRP: Intel $384, Qualcomm not recorded
• Part number: Intel SRQDUQ657, Qualcomm X1P42100

Fields that are the same include dual-channel memory bus, multiplier locked status, and production status of Active. Neither processor has recorded transistors or v-cache data. Both have a percentile of 50 versus all CPUs and an average benchmark score of 0.

Head-to-Head Benchmarks

The database records no head-to-head benchmark results for these two processors. The wins count for each side is 0, and the head-to-head benchmark list is empty. As a result, there are no measured performance comparisons available from the recorded data.

What the data does provide is a set of structural comparisons that can inform expectations. In multi-threaded workloads, the Intel Core 7 251E has 24 cores and 32 threads against the Qualcomm Snapdragon X1P-42-100's 8 cores and 8 threads. That is 16 additional cores and 24 additional threads for the Intel part. The Intel processor also holds a 30 MB advantage in shared L3 cache (36 MB versus 6 MB), which can reduce memory traffic for workloads that reuse data across cores.

In memory bandwidth, the Qualcomm processor shows a 45.6 GB/s advantage (135.2 GB/s versus 89.6 GB/s). This is a 51 percent higher bandwidth figure, which can benefit memory-bound workloads such as data streaming and certain compute kernels that fit within the processor's cache hierarchy.

In clock speed, the Qualcomm part has a base clock that is 1.30 GHz higher than the Intel part (3.40 GHz versus 2.10 GHz). The Intel part has a boost clock of 5.60 GHz, which is 2.50 GHz above its own base clock, but the Qualcomm part has no recorded boost clock in the database. Without boost data for the Qualcomm processor, single-thread comparisons at maximum frequency cannot be completed.

Power efficiency favors the Qualcomm processor. It operates at 30 watts TDP, which is 35 watts lower than the Intel part's 65 watts. For mobile or fanless designs, this difference is significant. The Intel part requires more cooling and power delivery, which is consistent with its desktop market segment.

The process node difference also favors Qualcomm: 4 nm from TSMC against 10 nm from Intel. A smaller process node generally allows higher transistor density and lower power per transistor, though the database does not record transistor counts for either processor to confirm density figures.

The Intel part supports ECC memory, which the Qualcomm part does not. This is a functional difference that matters for error-sensitive workloads. The Intel part also supports both DDR4 and DDR5, giving system designers a choice of memory generations, while the Qualcomm part is limited to LPDDR5X.

PCIe connectivity differs as well. The Intel part provides Gen 5 with 16 lanes, while the Qualcomm part provides Gen 4 with 12 lanes. This gives the Intel processor more bandwidth for expansion devices such as GPUs or NVMe storage. The Gen 5 specification doubles the per-lane bandwidth of Gen 4, so the Intel part has a solid advantage in available I/O bandwidth.

The release dates differ by roughly five months, with the Qualcomm part launching on 2024-08-27 and the Intel part launching on 2025-01-12. Both processors are currently listed as Active in production status, so both are available as current products.

The launch MSRP for the Intel Core 7 251E is $384. The Qualcomm Snapdragon X1P-42-100 has no recorded launch MSRP in the database.

Given the absence of benchmark scores, the data supports a specification-driven assessment. The Intel Core 7 251E is the stronger choice for high-core-count desktop workloads, ECC-enabled systems, and configurations that require PCIe Gen 5 connectivity. The Qualcomm Snapdragon X1P-42-100 is the stronger choice for low-power mobile systems, memory-bandwidth-sensitive workloads, and designs that benefit from a 4 nm process node and higher base clock.