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

Head-to-Head Benchmarks

The recorded data shows no direct benchmark comparisons between the Intel Core 3 100UL and the Intel Core 7 251E. Neither processor has any entries in the benchmark database, and both carry identical percentile scores of 50 against all CPUs. The average benchmark score for both parts is zero, which means no measured workloads, synthetic tests, or real-world application results are available to establish a performance delta. Without benchmark scores, the head-to-head comparison must rely on architectural specifications and feature differences rather than measured output.

The Core 7 251E delivers a substantially higher boost clock of 5.60 GHz compared to the Core 3 100UL's 4.50 GHz, a difference of 1.10 GHz. The base clock also favors the Core 7 251E at 2.10 GHz versus 1.20 GHz, a gap of 0.90 GHz. These clock advantages, combined with the Core 7 251E's larger core and thread counts, indicate a significant performance ceiling for the higher-tier part. The Core 3 100UL operates with 6 cores and 8 threads, while the Core 7 251E scales to 24 cores and 32 threads, giving it four times the core count and four times the thread count. In multi-threaded workloads that scale across cores, the Core 7 251E would be expected to finish tasks in a fraction of the time, though no measured data confirms the exact multiplier.

Single-thread performance favors the Core 7 251E through its higher boost clock, but the Core 3 100UL's 4.50 GHz boost is competitive for lightly threaded applications. The Core 3 100UL also has a much lower thermal design power of 15 watts against the Core 7 251E's 65 watts, a fourfold difference. That TDP gap suggests the Core 3 100UL can sustain its clocks in thermally constrained environments, while the Core 7 251E requires more substantial cooling and power delivery. The database shows no wins for either processor in the head-to-head field, so any conclusion about which part wins specific workloads must be inferred from the specification sheet alone.

Architecture Differences

The two processors come from different architectural lineages. The Core 3 100UL uses the Raptor Lake architecture, specifically the Raptor Lake-PS codename, and belongs to the Core 3 generation of that family. The Core 7 251E uses the Bartlett Lake codename and belongs to the Core 7 generation. Both parts are manufactured on the same 10 nm process node at Intel's foundry, so the transistor-level fabrication is identical. The die size differs, with the Core 7 251E measuring 257 mm², while the Core 3 100UL has no recorded die size in the database.

Cache organization separates the two parts significantly. Both processors use an 80 KB L1 cache per core, but the L2 cache differs: the Core 3 100UL has 1.25 MB per core, while the Core 7 251E has 2 MB per core. The L3 cache shows a larger gap, with the Core 3 100UL sharing 10 MB across all cores and the Core 7 251E sharing 36 MB. That 26 MB difference in shared L3 cache gives the Core 7 251E a substantial advantage in workloads that repeatedly access a large working set, such as database queries, compilation tasks, or virtualization workloads.

Memory support is similar on the surface: both support DDR4 and DDR5 memory in a dual-channel configuration. However, the Core 7 251E has a recorded memory bandwidth of 89.6 GB/s, while the Core 3 100UL has no memory bandwidth figure in the database. The Core 7 251E also supports ECC memory, a feature absent from the Core 3 100UL. PCIe connectivity differs as well: the Core 3 100UL provides Gen 4 with 8 CPU lanes, while the Core 7 251E provides Gen 5 with 16 CPU lanes. The newer PCIe generation and doubled lane count on the Core 7 251E allow for faster data transfer to GPUs and NVMe storage devices.

Integrated graphics differ between the two parts. The Core 3 100UL uses UHD Graphics 64EU, while the Core 7 251E uses UHD Graphics 770. Both are Intel integrated graphics solutions, but the model names indicate different execution unit configurations. The Core 7 251E also carries a part number of SRQDUQ657, while the Core 3 100UL's part number is listed as unknown. Neither processor has an unlocked multiplier, so overclocking is not supported on either part.

Release dates place the two products in different timeframes. The Core 3 100UL launched on April 7, 2024, while the Core 7 251E launched on January 12, 2025, roughly nine months later. Both remain in active production status and target the desktop market segment. The Core 7 251E has a recorded die size of 257 mm², which reflects its larger core count and cache capacity.

FAQ

Q: Which processor has more cores and threads?

A: The Core 7 251E has 24 cores and 32 threads. The Core 3 100UL has 6 cores and 8 threads. The Core 7 251E offers four times the core count and four times the thread count.

Q: Do both processors support the same memory types?

A: Yes, both support DDR4 and DDR5 in a dual-channel configuration. However, the Core 7 251E has a recorded memory bandwidth of 89.6 GB/s and supports ECC memory, while the Core 3 100UL has no recorded memory bandwidth and does not support ECC.

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

A: The Core 3 100UL has a TDP of 15 watts. The Core 7 251E has a TDP of 65 watts. The Core 3 100UL consumes one-quarter of the power envelope of the Core 7 251E.

Q: Which processor has a higher boost clock?

A: The Core 7 251E boosts to 5.60 GHz, while the Core 3 100UL boosts to 4.50 GHz. The Core 7 251E holds a 1.10 GHz advantage in maximum clock speed.

Q: Do the processors use the same socket?

A: Yes, both use Intel Socket 1700. They are physically compatible with the same socket platform.

Q: Which processor has more L3 cache?

A: The Core 7 251E has 36 MB of shared L3 cache. The Core 3 100UL has 10 MB of shared L3 cache. The Core 7 251E offers 26 MB more L3 cache.

Q: What PCIe generation does each processor support?

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

Specification Differences

| Specification | Core 3 100UL | Core 7 251E |

|---|---|---|

| Cores | 6 | 24 |

| Threads | 8 | 32 |

| Base Clock | 1.20 GHz | 2.10 GHz |

| Boost Clock | 4.50 GHz | 5.60 GHz |

| TDP | 15 W | 65 W |

| Codename | Raptor Lake-PS | Bartlett Lake |

| Generation | Core 3 (Raptor Lake-PS) | Core 7 (Bartlett Lake) |

| Die Size | Not recorded | 257 mm² |

| L2 Cache | 1.25 MB per core | 2 MB per core |

| L3 Cache | 10 MB shared | 36 MB shared |

| Memory Bandwidth | Not recorded | 89.6 GB/s |

| ECC Memory | No | Yes |

| PCIe | Gen 4, 8 lanes | Gen 5, 16 lanes |

| Integrated Graphics | UHD Graphics 64EU | UHD Graphics 770 |

| Part Number | Unknown | SRQDUQ657 |

| Release Date | April 7, 2024 | January 12, 2025 |

| Launch MSRP | Not recorded | $384 |

The two processors share several characteristics: both use Intel Socket 1700, both are built on a 10 nm process at Intel, both have 80 KB L1 cache per core, both support DDR4 and DDR5 dual-channel memory, both target the desktop market, both are in active production, and neither has an unlocked multiplier.

The Verdict

The data indicates a clear separation in capability between the two processors. The Core 7 251E dominates the specification sheet in nearly every performance-relevant category: it has four times the cores, four times the threads, a higher base clock by 0.90 GHz, a higher boost clock by 1.10 GHz, a larger L2 cache per core, a shared L3 cache that is 26 MB larger, PCIe Gen 5 with double the lanes, ECC memory support, and a recorded memory bandwidth of 89.6 GB/s. It also carries a launch MSRP of $384. The Core 3 100UL counters with a 15-watt TDP, which is 50 watts lower than the Core 7 251E's 65-watt TDP, making it the choice for power-constrained systems.

The Core 3 100UL targets scenarios where low power consumption is the primary constraint. Its 6-core, 8-thread configuration with a 4.50 GHz boost clock handles moderate workloads, and its 15-watt TDP allows for compact cooling solutions and lower system power draw. The Core 7 251E targets scenarios where raw compute capacity is the priority. Its 24-core, 32-thread configuration, 36 MB L3 cache, and 5.60 GHz boost clock position it for heavy multi-threaded workloads, and its ECC memory support makes it suitable for data-integrity applications.

Neither processor has recorded benchmark scores, so the verdict rests entirely on specifications. The Core 7 251E is the stronger processor on paper, with advantages in every compute metric except power consumption. The Core 3 100UL is the more efficient processor, using one-quarter of the power envelope while still providing a competitive boost clock for single-threaded tasks.

Where Each One Wins

The Core 7 251E wins in multi-core and multi-threaded workloads. Its 24 cores and 32 threads provide a fourfold advantage over the Core 3 100UL's 6 cores and 8 threads, which directly benefits rendering, video encoding, software compilation, scientific simulation, and server-style workloads that distribute tasks across many threads. The 36 MB shared L3 cache reduces memory latency for large working sets, and the 89.6 GB/s memory bandwidth supports data-intensive operations. The PCIe Gen 5 interface with 16 lanes provides higher bandwidth to discrete GPUs and storage devices, making the Core 7 251E the stronger platform for high-end discrete graphics configurations.

The Core 7 251E also wins in memory capacity and integrity features. ECC memory support allows error correction in critical applications such as financial modeling, database servers, and long-running compute jobs where a single-bit error could corrupt results. The 2 MB L2 cache per core provides a larger private cache for each thread, which helps latency-sensitive workloads. The 5.60 GHz boost clock gives it the edge in single-threaded performance as well, meaning it wins both lightly threaded and heavily threaded scenarios.

The Core 3 100UL wins in power efficiency. Its 15-watt TDP is one-quarter of the Core 7 251E's 65-watt TDP, which makes it suitable for small-form-factor desktops, fanless systems, or environments where heat dissipation and electricity consumption are constrained. The 4.50 GHz boost clock remains competitive for everyday applications such as web browsing, office productivity, and light media playback. The lower core count also means simpler cooling requirements, which can enable quieter system operation.

The Core 3 100UL also wins on platform simplicity for lower-power builds. Its PCIe Gen 4 interface with 8 lanes is sufficient for mainstream GPUs and NVMe drives, and its dual-channel DDR4 and DDR5 support allows builders to choose between memory generations. The lack of ECC support is not a drawback for consumer workloads, and the integrated UHD Graphics 64EU provides display output without a discrete GPU. For systems that prioritize low noise, low heat, and modest computational demands, the Core 3 100UL delivers those attributes with its 15-watt envelope.

The Core 7 251E is the choice when maximum compute throughput is required. The Core 3 100UL is the choice when power draw must stay minimal. The benchmark database records no direct performance measurements for either processor, so these conclusions derive from the architectural specifications and feature sets documented above.