Intel Core 3 305 vs Intel Core i5-14400 Comparison

Head-to-Head Benchmarks

The benchmark comparison between the Intel Core 3 305 and Intel Core i5-14400 is decidedly one-sided in raw performance, with the i5-14400 taking 14 of the 17 recorded head-to-head tests. However, the Core 3 305 claims three victories, and those wins reveal a more nuanced picture than the overall tally suggests.

The largest margin in the entire comparison belongs to the i5-14400 in PassMark integer math, where it scores 82,017 against the Core 3 305's 32,295, a delta of 60.6 percent in favor of the desktop part. This massive gap stems from the i5-14400's core configuration and higher clock ceiling. Data compression also shows a wide split: the i5-14400 posts 314,995 versus 146,857 for the Core 3 305, representing a 53.4 percent advantage. Random string sorting follows at 45.5 percent (32,346 vs. 17,623), and multithread performance trails at 38.4 percent (25,080 vs. 15,439).

Cinebench results are consistent across all three versions. In Cinebench R23 multi-core, the i5-14400 scores 21,315 against 13,123 for the Core 3 305, a 38.4 percent lead. Single-core R23 shows 3,009 versus 1,852, a 38.5 percent gap. The R20 and R15 runs mirror this pattern: R20 multi-core is 8,952 vs. 5,511 (38.4 percent), R20 single-core is 1,263 vs. 777 (38.5 percent), R15 multi-core is 2,148 vs. 1,322 (38.5 percent), and R15 single-core is 303 vs. 186 (38.6 percent). The consistency across Cinebench revisions indicates the performance differential is structural, not workload-specific.

Other i5-14400 wins include data encryption (16,731 vs. 11,019, a 34.1 percent lead), extended instructions (19,816 vs. 13,543, 31.7 percent), floating-point math (61,549 vs. 42,284, 31.3 percent), and physics (1,396 vs. 1,233, 11.7 percent). The physics gap is the narrowest among i5-14400 victories, suggesting the Core 3 305's architecture handles that particular workload relatively well.

The Core 3 305's three wins are instructive. In PassMark find prime numbers, it scores 115 versus 80 for the i5-14400, a 43.8 percent advantage. This is the largest single-test win for either part. The other two victories are in PassMark single-thread tests, where the Core 3 305 records 3,977 against 3,741 for the i5-14400, a 6.3 percent lead. Both single-thread entries in the database show identical scores, confirming the result.

The average benchmark scores place these parts far apart: the i5-14400 averages 32,115 while the Core 3 305 averages 18,302. In percentile rankings, the i5-14400 sits at the 82nd percentile of all CPUs, while the Core 3 305 sits at the 72nd. The nearest rivals for each part reinforce the positioning: the Core 3 305's closest competitor is the Intel Core i3-14100 at 18,318 average score, a 0.1 percent difference, while the i5-14400's nearest rival is the Intel Core i7-12800H at 32,121, a 0 percent difference.

Where Each One Wins

The i5-14400 dominates every multi-threaded and mixed workload in the database. Content creation, compilation, and data processing tasks that leverage multiple cores will show substantial advantages for the desktop part. The integer math result (60.6 percent ahead) and data compression result (53.4 percent ahead) are particularly strong indicators for productivity workloads. The Cinebench multi-core scores across R15, R20, and R23 all cluster around 38 to 39 percent leads, which suggests the advantage scales uniformly as the rendering workload increases.

The i5-14400 also wins in encryption and extended instruction workloads, with 34.1 percent and 31.7 percent leads respectively. These results point to strengths in security-related processing and SIMD-heavy code. Floating-point math at 31.3 percent ahead further confirms the desktop part's computational breadth.

The Core 3 305's wins are concentrated in two areas: prime number finding and single-thread latency. The 43.8 percent lead in find prime numbers is anomalous given the i5-14400's overall superiority, but it indicates the Core 3 305's execution pipeline handles that specific algorithmic pattern with unusual efficiency. The 6.3 percent single-thread lead in PassMark is more significant, as it shows the mobile part's architecture, with its higher per-core efficiency, can outpace the i5-14400 in lightly threaded scenarios despite the i5-14400's higher boost clock.

For workloads that are strictly single-threaded and latency-sensitive, the Core 3 305 holds a measurable edge. For everything else, the i5-14400 is the clear choice. The physics test, where the i5-14400 wins by only 11.7 percent, represents the closest contest outside the Core 3 305's victory column, suggesting the mobile part's efficiency core design narrows the gap in certain computational patterns.

Architecture Differences

The two processors come from fundamentally different design lineages. The Core 3 305 uses the Wildcat Lake codename and belongs to the Core 3 generation, fabricated on a 3 nm process node at Intel. The i5-14400 uses Raptor Lake-R architecture, part of the Core 14th Gen family, built on a 10 nm process node. The die size for the i5-14400 is listed at 215 mm², while the Core 3 305 has no recorded die size.

Core counts diverge sharply. The Core 3 305 has 6 cores and 6 threads, indicating no hyperthreading. The i5-14400 has 10 cores and 16 threads, which implies a hybrid configuration with performance and efficiency cores. The i5-14400's base clock is 2.50 GHz against 1.50 GHz for the Core 3 305, and its boost clock reaches 4.70 GHz versus 4.30 GHz.

Cache hierarchies reflect the architectural differences. The Core 3 305 has 192 KB of L1, 2.5 MB of L2, and 6 MB of shared L3. The i5-14400 lists L1 at 80 KB per core, L2 at 1.25 MB per core, and 20 MB of shared L3. The i5-14400's larger L3 is consistent with its desktop positioning and higher core count.

Memory support differs by platform. The Core 3 305 supports DDR5 and LPDDR5X with a single-channel memory bus and 59.7 GB/s bandwidth. The i5-14400 supports DDR4 and DDR5 with a dual-channel memory bus, and no bandwidth figure is recorded in the database. The Core 3 305 does not support ECC memory, while the i5-14400 does.

PCIe capabilities also diverge. The Core 3 305 offers Gen 4 with 6 lanes (CPU only), while the i5-14400 offers Gen 5 with 16 lanes (CPU only). The i5-14400's newer PCIe generation and higher lane count enable faster connectivity for storage and expansion.

Integrated graphics differ as well. The Core 3 305 uses Intel Xe3 Graphics with 1 Xe unit, while the i5-14400 uses UHD Graphics 730. The market segments reflect this: the Core 3 305 is a mobile part on Intel BGA 1516, and the i5-14400 is a desktop part on Intel Socket 1700. The Core 3 305 launched on 2026-04-15, while the i5-14400 launched on 2024-01-07. The launch MSRP for the Core 3 305 is $309, and the launch MSRP for the i5-14400 is $221. Both are active production parts with locked multipliers.

FAQ

Q: Which processor has the higher single-thread performance?

A: The Core 3 305 records 3,977 in PassMark single-thread tests, which is 6.3 percent ahead of the i5-14400's 3,741. However, in Cinebench R23 single-core, the i5-14400 scores 3,009 versus 1,852 for the Core 3 305, a 38.5 percent lead. The PassMark single-thread test favors the Core 3 305, while Cinebench favors the i5-14400.

Q: How large is the multi-core performance gap?

A: The i5-14400 leads by 38.4 percent in Cinebench R23 multi-core (21,315 vs. 13,123) and by 38.4 percent in PassMark multithread (25,080 vs. 15,439). The widest gap is in integer math at 60.6 percent, and the narrowest i5-14400 multi-core win is physics at 11.7 percent.

Q: What is the Core 3 305's best benchmark result relative to the i5-14400?

A: The Core 3 305 wins PassMark find prime numbers by 43.8 percent (115 vs. 80) and PassMark single-thread by 6.3 percent (3,977 vs. 3,741). These are its only recorded victories in the 17-test comparison.

Q: Do the two processors support the same memory types?

A: No. The Core 3 305 supports DDR5 and LPDDR5X with a single-channel memory bus. The i5-14400 supports DDR4 and DDR5 with a dual-channel memory bus. The Core 3 305 has 59.7 GB/s memory bandwidth recorded, while the i5-14400 has no bandwidth figure.

Q: How do their CPU socket platforms differ?

A: The Core 3 305 uses Intel BGA 1516 and targets the mobile segment. The i5-14400 uses Intel Socket 1700 and targets the desktop segment. The i5-14400 supports PCIe Gen 5 with 16 lanes, while the Core 3 305 supports PCIe Gen 4 with 6 lanes.

Q: What are the percentile rankings for each processor?

A: The i5-14400 ranks at the 82nd percentile of all CPUs, while the Core 3 305 ranks at the 72nd. The i5-14400's average benchmark score is 32,115, and the Core 3 305's is 18,302.

Specification Differences

| Specification | Intel Core 3 305 | Intel Core i5-14400 |

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

| Cores | 6 | 10 |

| Threads | 6 | 16 |

| Base clock | 1.50 GHz | 2.50 GHz |

| Boost clock | 4.30 GHz | 4.70 GHz |

| TDP | 15 W | 65 W |

| Socket | Intel BGA 1516 | Intel Socket 1700 |

| Codename | Wildcat Lake | Raptor Lake-R |

| Architecture | Not recorded | Raptor Lake |

| Generation | Core 3 (Wildcat Lake) | Core i5 (Raptor Lake Refresh) |

| 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) | 20 MB (shared) |

| Memory support | DDR5, LPDDR5X | DDR4, DDR5 |

| Memory bus | Single-channel | Dual-channel |

| Memory bandwidth | 59.7 GB/s | Not recorded |

| ECC memory | No | Yes |

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

| Integrated graphics | Intel Xe3 Graphics (1 Xe) | UHD Graphics 730 |

| Market segment | Mobile | Desktop |

| Release date | 2026-04-15 | 2024-01-07 |

| Launch MSRP | $309 | $221 |

| Multiplier unlocked | No | No |

| Part number | SAE3L | SRN3QSRN46 |