Intel Core 3 305 vs Intel Core i5-1334U Comparison

The Intel Core i5-1334U and Intel Core 3 305 are both 15W mobile processors, but the benchmark data reveals a clear generational split. The Core 3 305 wins 13 of 17 head-to-head tests, including all modern Cinebench R20 and R23 workloads, while the i5-1334U holds onto wins in only four tests, primarily legacy single-core and integer math. The Core 3 305 is the stronger all-around performer, but the i5-1334U retains specific strengths in integer-heavy and data compression tasks.

The Verdict

The Intel Core 3 305 is the superior processor for most users, based on its decisive wins in Cinebench R23 multi-core (13,123 vs 8,641, a 34.2% advantage) and single-core (1,852 vs 1,727, a 6.7% lead). It also dominates PassMark multi-thread (15,439 vs 13,410, 13.1% ahead) and physics (1,233 vs 722, a massive 41.4% lead). The i5-1334U should only be chosen by users with specific integer math workloads, where it leads by 56% in PassMark integer math (50,374 vs 32,295), or data compression, where it holds a 2.5% edge (150,568 vs 146,857). For general productivity, rendering, and modern application performance, the Core 3 305 is the clear pick.

Architecture Differences

The two chips come from different design eras and process nodes. The i5-1334U is built on Intel’s 10 nm process using the Raptor Lake architecture (Raptor Lake-U), while the Core 3 305 uses a far more advanced 3 nm process with the Wildcat Lake codename. The i5-1334U offers 10 cores and 12 threads, whereas the Core 3 305 has 6 cores and 6 threads — meaning the i5 has a 4-core and 6-thread advantage on paper. However, the Core 3 305 compensates with higher base and boost clocks: 1.50 GHz base and 4.30 GHz boost, versus 1.30 GHz and 4.60 GHz for the i5-1334U. The Core 3 305’s boost clock is actually lower, but its newer architecture delivers higher performance per clock.

Cache configurations differ significantly. The i5-1334U has 12 MB of shared L3 cache, while the Core 3 305 has only 6 MB. However, the Core 3 305 lists larger L1 (192 KB total vs 80 KB per core) and L2 (2.5 MB total vs 1.25 MB per core) caches. Memory support also diverges: the i5-1334U supports DDR4 and DDR5 with dual-channel memory, while the Core 3 305 supports only DDR5 and LPDDR5X with single-channel memory, although it brings a specified 59.7 GB/s memory bandwidth. The Core 3 305 also features newer integrated graphics (Intel Xe3 Graphics with 1 Xe core) versus the i5-1334U’s Iris Xe Graphics with 80 execution units. Sockets differ as well: the i5-1334U uses Intel BGA 1744, while the Core 3 305 uses Intel BGA 1516.

Head-to-Head Benchmarks

The most striking result is Cinebench R23 multi-core, where the Core 3 305 scores 13,123 against the i5-1334U’s 8,641 — a 34.2% advantage. This is despite the i5-1334U having 10 cores and 12 threads versus 6 cores and 6 threads. The Core 3 305 also wins Cinebench R23 single-core (1,852 vs 1,727, 6.7% ahead) and Cinebench R20 multi-core (5,511 vs 4,638, 15.8% ahead). In Cinebench R15, however, the i5-1334U wins both tests: multi-core 1,569 vs 1,322 (18.7% ahead) and single-core 241 vs 186 (29.6% ahead). This suggests the i5-1334U’s older architecture was better optimized for the R15 benchmark, but the Core 3 305 pulls ahead in newer Cinebench versions.

PassMark results are mixed. The Core 3 305 dominates in floating-point math (42,284 vs 34,474, 18.5% ahead), extended instructions (13,543 vs 8,563, 36.8% ahead), and find prime numbers (115 vs 39, a 66.1% lead). It also wins PassMark single-thread (3,977 vs 3,345, 15.9% ahead), multi-thread (15,439 vs 13,410, 13.1% ahead), physics (1,233 vs 722, 41.4% ahead), data encryption (11,019 vs 9,377, 14.9% ahead), and random string sorting (17,623 vs 16,933, 3.9% ahead). Conversely, the i5-1334U wins PassMark integer math by a wide margin (50,374 vs 32,295, 56% ahead) and data compression (150,568 vs 146,857, 2.5% ahead). The overall win tally is 13 for the Core 3 305 and 4 for the i5-1334U.

FAQ

Q: Which processor has more cores?

A: The Intel Core i5-1334U has 10 cores and 12 threads, while the Intel Core 3 305 has 6 cores and 6 threads.

Q: Why does the 6-core Core 3 305 beat the 10-core i5-1334U in Cinebench R23?

A: The Core 3 305 scores 13,123 in Cinebench R23 multi-core versus 8,641 for the i5-1334U (34.2% higher), despite fewer cores. The data indicates the Core 3 305’s 3 nm process and Wildcat Lake architecture deliver higher per-core efficiency, plus it runs at a 1.50 GHz base clock versus 1.30 GHz.

Q: Which chip wins in single-threaded performance?

A: The Core 3 305 wins PassMark single-thread with 3,977 versus 3,345 (15.9% ahead) and Cinebench R23 single-core with 1,852 versus 1,727 (6.7% ahead). The i5-1334U only wins Cinebench R15 single-core (241 vs 186, 29.6% ahead).

Q: Are there any workloads where the i5-1334U is clearly better?

A: Yes, the i5-1334U leads PassMark integer math by 56% (50,374 vs 32,295) and data compression by 2.5% (150,568 vs 146,857). It also wins Cinebench R15 multi-core (1,569 vs 1,322, 18.7% ahead).

Q: What are the memory support differences?

A: The i5-1334U supports DDR4 and DDR5 with dual-channel memory. The Core 3 305 supports DDR5 and LPDDR5X with single-channel memory and has a specified memory bandwidth of 59.7 GB/s.

Q: Which processor has better integrated graphics?

A: The Core 3 305 features Intel Xe3 Graphics (1 Xe core), while the i5-1334U has Iris Xe Graphics with 80 execution units. The benchmark data does not include graphics performance, so a direct comparison is not possible from this pack.

Where Each One Wins

The Intel Core 3 305 wins in nearly every modern multi-threaded and single-threaded workload. It takes all Cinebench R20 and R23 tests, with the largest margin in R23 multi-core (34.2% ahead). It also leads in PassMark multi-thread, physics, floating-point math, extended instructions, prime number finding, encryption, and single-thread. The 3 nm process and newer architecture make it the better choice for rendering, video encoding, scientific computing, and general productivity — anything that scales with modern instruction sets and high clock efficiency.

The Intel Core i5-1334U wins in four niches. Its 56% lead in PassMark integer math points to strong performance in database operations, compression algorithms, and certain financial or engineering calculations. It also edges out the Core 3 305 in data compression (2.5% ahead), making it slightly better for file archiving or data transfer tasks. The i5-1334U wins Cinebench R15 multi-core and single-core, but these are older tests that favor its Raptor Lake architecture; they are unlikely to reflect modern application performance. The i5-1334U’s dual-channel memory support and 12 MB L3 cache also give it an edge in memory-intensive workloads, though the Core 3 305’s higher memory bandwidth specification partially offsets this.

Specification Differences

| Specification | Intel Core i5-1334U | Intel Core 3 305 |

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

| Cores | 10 | 6 |

| Threads | 12 | 6 |

| Base Clock | 1.30 GHz | 1.50 GHz |

| Boost Clock | 4.60 GHz | 4.30 GHz |

| Socket | Intel BGA 1744 | Intel BGA 1516 |

| Architecture | Raptor Lake | Wildcat Lake |

| Process Node | 10 nm | 3 nm |

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

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

| L3 Cache | 12 MB (shared) | 6 MB (shared) |

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

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

| Memory Bandwidth | Not specified | 59.7 GB/s |

| PCIe | Gen 4, 8 Lanes | Gen 4, 6 Lanes |

| Integrated Graphics | Iris Xe Graphics 80EU | Intel Xe3 Graphics (1 Xe) |

| Launch MSRP | $340 | $309 |

| Release Date | 2023-01-03 | 2026-04-15 |

The Core 3 305 is newer, smaller, and cheaper at launch, with a 3 nm process versus 10 nm. It sacrifices core count and L3 cache but gains a higher base clock and a memory bandwidth specification. The i5-1334U offers more cores, threads, and L3 cache, plus dual-channel memory, but its older architecture costs it most benchmark wins.