Intel Core 3 305 vs Intel Core 7 251TE Comparison

The Intel Core 3 305 and Intel Core 7 251TE occupy different positions in Intel’s mobile and desktop lineups, with the former built for efficiency and the latter for raw throughput. The recorded data shows a clear split: the Core 7 251TE dominates nearly every benchmark, while the Core 3 305 wins only in single-threaded PassMark tests. This analysis compares their architecture, benchmark results, and specification differences based solely on database measurements.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core 7 251TE has 24 cores and 32 threads, while the Intel Core 3 305 has 6 cores and 6 threads. This 4x core advantage and over 5x thread advantage directly explains the Core 7’s superior multi-threaded performance.

Q: What is the performance gap in Cinebench R23?

A: In Cinebench R23 multicore, the Core 7 251TE scores 25518 versus 13123 for the Core 3 305, a 48.6% difference in favor of the Core 7. Single-core scores also favor the Core 7: 3602 versus 1852, again a 48.6% delta.

Q: Does the Intel Core 3 305 win any benchmarks?

A: Yes, the Core 3 305 wins PassMark single-thread tests, scoring 3977 versus 3568 for the Core 7 251TE, an 11.5% advantage. This applies to both the "single_thread" and "singlethread" entries in the database.

Q: What is the average benchmark score difference?

A: The Core 7 251TE has an average benchmark score of 41650, while the Core 3 305 averages 18302. The Core 7 sits in the 88th percentile of all CPUs, compared to the 72nd percentile for the Core 3.

Q: Which processor supports ECC memory?

A: The Intel Core 7 251TE supports ECC memory, while the Intel Core 3 305 does not. The Core 7 also supports both DDR4 and DDR5, whereas the Core 3 only supports DDR5 and LPDDR5X.

Q: What are the socket and process node differences?

A: The Core 3 305 uses Intel BGA 1516 and a 3 nm process node, while the Core 7 251TE uses Intel Socket 1700 and a 10 nm process node. The Core 7 has a larger die size of 215 mm², while the Core 3’s die size is not recorded.

Architecture Differences

The Intel Core 3 305, codenamed Wildcat Lake, is built on a 3 nm process node and belongs to the Core 3 generation. It features 6 cores and 6 threads, with no hyper-threading. The base clock is 1.50 GHz, and the boost clock reaches 4.30 GHz. The cache hierarchy includes 192 KB of L1, 2.5 MB of L2, and 6 MB of shared L3. Memory support is limited to DDR5 and LPDDR5X, with a single-channel memory bus delivering 59.7 GB/s of bandwidth. The integrated graphics are Intel Xe3 Graphics with 1 Xe core. The processor is designed for the mobile segment, uses the Intel BGA 1516 socket, and has 6 PCIe Gen 4 lanes (CPU only).

The Intel Core 7 251TE, codenamed Bartlett Lake, is built on a 10 nm process node and belongs to the Core 7 generation. It features 24 cores and 32 threads, a substantial increase over the Core 3. The base clock is 1.40 GHz, but the boost clock reaches 5.40 GHz, a full 1.1 GHz higher than the Core 3. Cache configuration is notably different: 80 KB of L1 per core, 1.25 MB of L2 per core, and 36 MB of shared L3. This per-core cache design scales with the higher core count, resulting in significantly more total cache. The Core 7 supports both DDR4 and DDR5, uses a dual-channel memory bus, and achieves 89.6 GB/s of memory bandwidth, roughly 50% higher than the Core 3. ECC memory is supported, a feature absent on the Core 3. The integrated graphics are UHD Graphics 770, and the processor uses the Intel Socket 1700, targeting the desktop segment. PCIe connectivity is Gen 5 with 16 lanes (CPU only), a clear upgrade over the Core 3’s Gen 4 and 6 lanes.

The process node difference is stark: 3 nm versus 10 nm. Despite the older node, the Core 7 delivers higher boost clocks and far more cores, indicating that architectural design choices prioritize throughput over transistor density. The Core 3’s smaller node likely contributes to its lower power envelope, though the database does not list TDP values for either processor beyond the fact that the Core 3 has a TDP of 15 and the Core 7 has a TDP of 45. The Core 7’s 215 mm² die size contrasts with the Core 3’s unspecified die area, suggesting a much larger physical chip to accommodate 24 cores.

Head-to-Head Benchmarks

The benchmark data shows a decisive overall victory for the Intel Core 7 251TE, which wins 15 of 17 recorded tests. The Core 3 305 wins only 2 tests, both being PassMark single-thread measurements.

In Cinebench tests, the Core 7 leads by a consistent 48.6% across all three versions (R15, R20, R23) and both multicore and single-core variants. For example, Cinebench R15 multicore scores are 2572 against 1322. Cinebench R20 multicore shows 10717 versus 5511. Cinebench R23 multicore delivers 25518 versus 13123. Single-core results follow the same pattern: R15 at 362 versus 186, R20 at 1512 versus 777, and R23 at 3602 versus 1852. The uniform 48.6% delta across all Cinebench tests indicates that the Core 7’s advantage scales evenly with core count and clock speed, with no workload-specific variation in these rendering tests.

PassMark tests reveal a wider range of deltas. The largest gap is in integer math, where the Core 7 scores 125739 against 32295, a 74.3% difference. This test heavily leverages the additional cores and threads, as integer operations parallelize well. Floating-point math shows a 50.6% delta (85607 versus 42284). Data compression favors the Core 7 by 56.1% (334399 versus 146857). Random string sorting shows a 55.5% delta (39643 versus 17623). Data encryption has a 50.3% delta (22176 versus 11019). Multithread performance is 48.6% higher (30022 versus 15439), matching the Cinebench trend. Physics tests show a 36.4% delta (1938 versus 1233), a smaller gap but still a clear Core 7 win.

Two tests show smaller deltas. Extended instructions score 16974 versus 13543, a 20.2% advantage for the Core 7. Find prime numbers scores 140 versus 115, a 17.9% delta. These workloads may be more limited by per-core efficiency or memory latency, reducing the impact of the Core 7’s higher core count.

The sole Core 3 victory comes in PassMark single-thread tests, where it scores 3977 versus 3568, an 11.5% advantage. This suggests that the Core 3’s 3 nm process and higher base clock (1.50 GHz versus 1.40 GHz) provide a per-core performance edge in light, single-threaded tasks. However, the Core 7’s higher boost clock of 5.40 GHz does not translate into a single-thread win, indicating that sustained single-core performance on the Core 3 is more efficient, possibly due to the newer process node.

The overall average benchmark scores reinforce this disparity: 41650 for the Core 7 versus 18302 for the Core 3. The Core 7 also ranks higher in the percentile versus all CPUs, at 88th percentile compared to 72nd for the Core 3. Nearest rival data places the Core 3 close to the Intel Core i3-14100 (0.1% behind) and Intel Core 5 330 (0.2% behind), while the Core 7 sits near the Intel Core Ultra 7 265H and Intel Core i7-14650HX, with deltas under 0.2%. These comparisons contextualize the two processors within their respective performance tiers.

The Verdict

The data indicates that the Intel Core 7 251TE is the superior processor for nearly all workloads. Its 24 cores, 32 threads, and higher boost clock deliver a 48.6% lead in Cinebench tests and a 74.3% lead in integer math, making it the clear choice for multi-threaded applications such as rendering, data compression, and scientific computing. The 88th percentile ranking and average benchmark score of 41650 place it in the upper tier of CPUs, comparable to the Intel Core Ultra 7 265H and Intel Core i7-14650HX.

The Intel Core 3 305, with its 6 cores and 6 threads, is designed for efficiency rather than raw performance. Its 3 nm process node and single-channel memory indicate a focus on power savings in mobile devices. The 11.5% win in PassMark single-thread tests shows that it handles basic tasks competently, and its 72nd percentile ranking is respectable for a low-power chip. However, the 48.6% to 74.3% deficits in multi-threaded workloads make it unsuitable for demanding tasks.

For users who prioritize single-threaded responsiveness and battery efficiency in a mobile form factor, the Core 3 305 offers a modern process node and adequate single-core performance. For users who need maximum throughput across many cores, the Core 7 251TE is the only logical choice, providing double the Cinebench scores and more than triple the integer math performance. The Core 7 also supports ECC memory and a dual-channel memory bus, adding reliability and bandwidth for server-like workloads, while the Core 3 lacks both features.

The production status of both processors is active, so both remain available options. The Core 7’s desktop socket (Intel Socket 1700) and Gen 5 PCIe lanes make it suitable for high-end desktop builds, while the Core 3’s BGA socket and Gen 4 lanes target compact laptops. The benchmark data does not support a scenario where the Core 3 outperforms the Core 7 outside of the narrow single-thread PassMark test, so the verdict is straightforward: choose the Core 7 for performance, the Core 3 for efficiency.

Specification Differences

The table below lists only the fields where the two processors differ, based on the recorded data.

| Field | Intel Core 3 305 | Intel Core 7 251TE |

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

| Cores | 6 | 24 |

| Threads | 6 | 32 |

| Base Clock | 1.50 GHz | 1.40 GHz |

| Boost Clock | 4.30 GHz | 5.40 GHz |

| TDP | 15 | 45 |

| Socket | Intel BGA 1516 | Intel Socket 1700 |

| Codename | Wildcat Lake | Bartlett Lake |

| Generation | Core 3 (Wildcat Lake) | Core 7 (Bartlett Lake) |

| Process Node | 3 nm | 10 nm |

| Die Size | Not recorded | 215 mm² |

| L1 Cache | 192 KB | 80 KB (per core) |

| L2 Cache | 2.5 MB | 1.25 MB (per core) |

| L3 Cache | 6 MB (shared) | 36 MB (shared) |

| Memory Support | DDR5, LPDDR5X | DDR4, DDR5 |

| Memory Bus | Single-channel | Dual-channel |

| Memory Bandwidth | 59.7 GB/s | 89.6 GB/s |

| ECC Memory | false | true |

| PCIe | Gen 4, 6 Lanes (CPU only) | Gen 5, 16 Lanes (CPU only) |

| Integrated Graphics | Intel Xe3 Graphics (1 Xe) | UHD Graphics 770 |

| Market Segment | Mobile | Desktop |

| Release Date | 2026-04-15 | 2025-01-12 |

| Launch MSRP | $309 | $384 |

| Part Number | SAE3L | SRQAXQ5ZG |

The Core 7 251TE also has a higher average benchmark score (41650 versus 18302) and a higher percentile versus all CPUs (88th versus 72nd). The Core 3 305 has a higher PassMark single-thread score (3977 versus 3568). All other recorded specifications, including manufacturer, foundry, and multiplier unlock status, are identical or not listed.