Intel Core 3 100U vs Intel Core 7 251E Comparison

Head-to-Head Benchmarks

The Intel Core 3 100U and Intel Core 7 251E occupy very different positions in the database. The Core 3 100U has a full set of recorded benchmark scores, while the Core 7 251E has no benchmark entries at all in the database. This means direct head-to-head comparisons rely on architectural data and recorded specifications rather than measured performance scores.

The Core 3 100U posts an average benchmark score of 16148 across its suite of tests. This places it in the 70th percentile of all CPUs tracked in the database. Its nearest rivals in the aggregate rankings include the Intel Core i7-10850H at 16204, the Intel Core i5-10600KF at 16228, the Intel Core i7-1260U at 16320, and the AMD Ryzen 5 4600H at 16341. The Core 3 100U trails each of these by narrow margins: 0.3% behind the i7-10850H, 0.5% behind the i5-10600KF, 1.1% behind the i7-1260U, and 1.2% behind the Ryzen 5 4600H. The recorded deltas are all under two percent, indicating that the Core 3 100U sits in a tightly packed performance cluster.

Within its own benchmark results, the Core 3 100U shows a substantial gap between multi-threaded and single-threaded workloads. In Cinebench R23, the multi-core score reaches 10624 while the single-core score reaches 1499. The Cinebench R20 results follow the same pattern: 4462 in multi-core and 629 in single-core. Cinebench R15 shows 1070 in multi-core and 150 in single-core. These figures indicate a processor designed for sustained throughput across multiple cores rather than dominance in lightly threaded tasks.

PassMark results for the Core 3 100U reinforce this interpretation. The multi-thread score is 12522, while the single-thread score is 3506. Integer math posts 39580, floating point math posts 28322, and extended instructions post 7894. Data compression scores 136497, data encryption scores 8128, and random string sorting scores 15191. Physics processing records a score of 876, and prime number finding records 52. The compression result stands out as particularly strong relative to the other PassMark subtests.

The Core 7 251E, by contrast, has no recorded benchmark scores and an average benchmark score of zero. Its percentile ranking sits at 50, which reflects the absence of measured data rather than a performance level. The database lists no nearest rivals for this processor, so no delta comparisons can be drawn. The absence of benchmark data means the Core 7 251E cannot be positioned against the Core 3 100U on the basis of recorded measurements.

Where Each One Wins

The Core 3 100U wins in the only category where direct measured data exists: benchmark availability. It has 17 recorded benchmark scores spanning Cinebench R15, R20, R23, and PassMark test suites. The Core 7 251E has zero recorded scores. Any performance assessment of the Core 7 251E must rely on its specification sheet rather than database measurements.

The Core 3 100U is a mobile processor with a 15 W TDP. It uses the Intel BGA 1744 socket and targets the laptop segment. Its six cores and eight threads with a base clock of 1.20 GHz and a boost clock of 4.70 GHz define its operating envelope. The recorded benchmark data shows it delivers competitive results within its power class, matching or nearly matching several higher-tier processors from older generations.

The Core 7 251E is a desktop processor with a 65 W TDP. It uses the Intel Socket 1700 and targets desktop systems. Its 24 cores and 32 threads with a base clock of 2.10 GHz and a boost clock of 5.60 GHz provide a much larger computational resource on paper. The die size is 257 mm², and the processor supports ECC memory, a feature absent from the Core 3 100U. The Core 7 251E also offers PCIe Gen 5 with 16 lanes, while the Core 3 100U offers PCIe Gen 4 with 8 lanes.

For workloads that depend on core count and memory bandwidth, the Core 7 251E has the specification advantage. Its 36 MB of shared L3 cache and 89.6 GB/s memory bandwidth exceed the Core 3 100U's 10 MB of shared L3 cache and unspecified memory bandwidth figure. The Core 7 251E also provides 2 MB of L2 cache per core versus 1.25 MB per core on the Core 3 100U. Both processors use 80 KB of L1 cache per core.

For workloads that depend on measured, verified performance, the Core 3 100U has the data advantage. Its benchmark scores are recorded, peer-compared, and ranked in the 70th percentile. The Core 7 251E has no such data, so its actual performance in these tests remains unquantified.

Architecture Differences

The two processors come from different architectural lineages. The Core 3 100U uses Raptor Lake architecture, specifically the Raptor Lake-U codename, and belongs to the Core 3 generation of Raptor Lake-U parts. The Core 7 251E uses the Bartlett Lake codename and belongs to the Core 7 generation of Bartlett Lake parts. The database does not list a formal architecture name for the Core 7 251E, only its codename.

Both processors are fabricated on a 10 nm process node at Intel's foundry. The Core 7 251E has a recorded die size of 257 mm², while the Core 3 100U has no recorded die size. The Core 3 100U has 6 cores and 8 threads. The Core 7 251E has 24 cores and 32 threads. This represents a fourfold increase in core count and a fourfold increase in thread count.

Clock speeds differ substantially. The Core 3 100U runs at a 1.20 GHz base clock and 4.70 GHz boost clock. The Core 7 251E runs at a 2.10 GHz base clock and 5.60 GHz boost clock. The Core 7 251E holds advantages in both base and boost frequencies, with a 0.90 GHz higher base clock and a 0.90 GHz higher boost clock.

Cache hierarchies diverge in capacity. The Core 3 100U provides 1.25 MB of L2 cache per core and 10 MB of shared L3 cache. The Core 7 251E provides 2 MB of L2 cache per core and 36 MB of shared L3 cache. The L1 cache is identical at 80 KB per core for both processors.

Memory support is similar in type, with both supporting DDR4 and DDR5 memory on a dual-channel bus. The Core 7 251E adds ECC memory support, which the Core 3 100U lacks. The Core 7 251E has a recorded memory bandwidth of 89.6 GB/s, while the Core 3 100U has no recorded memory bandwidth figure.

PCIe capabilities differ by generation and lane count. The Core 3 100U provides PCIe Gen 4 with 8 CPU lanes. The Core 7 251E provides PCIe Gen 5 with 16 CPU lanes. The Core 7 251E doubles the lane count and moves to the newer PCIe generation.

Integrated graphics differ as well. The Core 3 100U uses UHD Graphics 64EU. The Core 7 251E uses UHD Graphics 770. Both are Intel integrated graphics solutions, but they belong to different product tiers.

Power envelopes are not comparable. The Core 3 100U is rated at 15 W TDP, suited for thin-and-light mobile systems. The Core 7 251E is rated at 65 W TDP, suited for desktop systems with more substantial cooling. The sockets reflect these design targets: Intel BGA 1744 for the mobile part and Intel Socket 1700 for the desktop part.

Release timing differs by roughly one year. The Core 3 100U was released on 2024-01-07. The Core 7 251E was released on 2025-01-12. Both processors remain active in production status.

The launch MSRP for the Core 3 100U is $426. The launch MSRP for the Core 7 251E is $384.

The Verdict

The recorded data supports different conclusions for different use cases. For mobile systems where power draw and physical footprint matter, the Core 3 100U is the only processor in this comparison with measured performance data. Its 70th percentile ranking and average benchmark score of 16148 place it in the middle-upper tier of all tracked CPUs. The narrow deltas against its nearest rivals, all under 1.2%, indicate consistent performance near established processors like the Core i7-10850H and Core i7-1260U.

For desktop systems where core count, memory bandwidth, and PCIe capabilities matter, the Core 7 251E offers a specification profile that the Core 3 100U cannot match. Its 24 cores, 32 threads, 36 MB of L3 cache, 89.6 GB/s memory bandwidth, and PCIe Gen 5 support are all absent from the Core 3 100U's feature set. The Core 7 251E also supports ECC memory, which the Core 3 100U does not.

The benchmark data does not show the Core 7 251E outperforming the Core 3 100U in any test, because no benchmark data exists for the Core 7 251E. The database records zero scores for this processor. Its 50th percentile ranking reflects this absence of data, not a measured performance level.

The Core 3 100U suits users who require verified, ranked performance in a mobile form factor. The Core 7 251E suits users who require the higher core counts, cache capacities, memory bandwidth, and platform features listed in its specification sheet. The choice between them depends on whether the workload demands measured mobile performance or specified desktop capability.

FAQ

Q: How does the Intel Core 3 100U compare to its nearest rivals in the database?

A: The Core 3 100U posts an average benchmark score of 16148. It trails the Intel Core i7-10850H by 0.3%, the Intel Core i5-10600KF by 0.5%, the Intel Core i7-1260U by 1.1%, and the AMD Ryzen 5 4600H by 1.2%. All four nearest rivals sit within 1.2% of its score.

Q: Does the Intel Core 7 251E have any recorded benchmark scores?

A: No. The database lists no benchmark entries for the Core 7 251E. Its average benchmark score is recorded as zero, and its percentile ranking of 50 reflects the absence of measured data.

Q: What are the core and thread counts of each processor?

A: The Intel Core 3 100U has 6 cores and 8 threads. The Intel Core 7 251E has 24 cores and 32 threads.

Q: Do both processors support the same memory types?

A: Both support DDR4 and DDR5 memory on a dual-channel bus. The Core 7 251E additionally supports ECC memory, which the Core 3 100U does not. The Core 7 251E also has a recorded memory bandwidth of 89.6 GB/s, while the Core 3 100U has no recorded memory bandwidth figure.

Q: What are the clock speeds for each processor?

A: The Core 3 100U has a base clock of 1.20 GHz and a boost clock of 4.70 GHz. The Core 7 251E has a base clock of 2.10 GHz and a boost clock of 5.60 GHz.

Q: What PCIe generations and lane counts do the processors use?

A: The Core 3 100U uses PCIe Gen 4 with 8 CPU lanes. The Core 7 251E uses PCIe Gen 5 with 16 CPU lanes.

Q: What integrated graphics do the processors include?

A: The Core 3 100U includes UHD Graphics 64EU. The Core 7 251E includes UHD Graphics 770.