CPU 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.