Intel Core i5-11600KF vs Intel Core i5-1345U Comparison

The Intel Core i5-11600KF and Intel Core i5-1345U are two processors from different Intel generations and market segments, yet they land in the same performance percentile. The 11600KF is a desktop Rocket Lake chip, while the 1345U is a mobile Raptor Lake-U part. Benchmark data shows the desktop processor wins 14 of 17 head-to-head tests, often by massive margins in multi-threaded workloads, though the mobile chip claims a narrow victory in single-threaded PassMark tests. Both processors sit at the 73rd percentile among all CPUs, with average benchmark scores of 19723 and 19411 respectively.

FAQ

Q: Which processor is faster in multi-core workloads?

A: The Intel Core i5-11600KF is significantly faster in multi-core tests. In Cinebench R23 multi-core, it scores 16503 versus 7724 for the 1345U, a 113.7% advantage. The desktop chip also leads by 40.2% in Cinebench R20 multi-core (6931 vs 4942) and by 26.8% in Cinebench R15 multi-core (1663 vs 1311).

Q: Does the 1345U win any benchmark categories?

A: Yes, the 1345U wins three head-to-head tests. It edges out the 11600KF in PassMark single-thread (3415 vs 3327, a 2.6% advantage) and in Cinebench R15 single-core (240 vs 234, a 2.5% advantage). Both processors show identical scores in the duplicate PassMark single-thread test, confirming the mobile chip's slight single-core edge.

Q: How do their core and thread counts compare?

A: The 1345U has 10 cores and 12 threads, while the 11600KF has 6 cores and 12 threads. Despite having fewer physical cores, the desktop chip delivers substantially higher multi-threaded performance, indicating that its higher power envelope and clock speeds more than compensate for the core deficit.

Q: What are the TDP differences between these processors?

A: The 11600KF has a TDP of 125 watts, while the 1345U is rated at 15 watts. This 110-watt difference reflects their distinct market positions: the desktop chip is designed for high-performance systems with active cooling, whereas the mobile chip is optimized for laptops and power efficiency.

Q: Which processor supports faster PCIe connectivity?

A: Both support PCIe Gen 4, but they differ in lane counts. The 11600KF provides 20 lanes (CPU only), while the 1345U offers 8 lanes (CPU only). This makes the desktop chip better suited for multiple GPUs or high-speed NVMe storage arrays.

Q: How do their integrated graphics capabilities differ?

A: The 1345U includes Iris Xe Graphics 80EU, while the 11600KF has no integrated graphics. This means the desktop chip requires a discrete GPU for display output, whereas the mobile chip can power a laptop display without additional hardware.

Architecture Differences

The 11600KF is built on Rocket Lake architecture, fabricated on Intel's 14 nm process, and features a die size of 276 mm². The 1345U uses Raptor Lake architecture on a 10 nm process, with no die size specified in the data. These process differences reflect the generational gap: Rocket Lake was Intel's 11th-generation desktop architecture, while Raptor Lake-U is a 13th-generation mobile design.

Cache hierarchies reveal another significant divergence. Both processors share 12 MB of L3 cache and 80 KB of L1 per core, but L2 cache differs substantially. The 11600KF has 512 KB of L2 per core, while the 1345U has 1.25 MB per core. This larger per-core L2 on the mobile chip likely contributes to its single-thread performance advantage. The 11600KF uses a 6-core, 12-thread configuration, while the 1345U employs a 10-core, 12-thread setup, suggesting the mobile chip uses a mix of performance and efficiency cores.

Memory support also differs. The 11600KF supports DDR4 only, with a memory bandwidth of 51.2 GB/s. The 1345U supports both DDR4 and DDR5, though its memory bandwidth is not specified. Both use dual-channel memory buses. The 11600KF is an unlocked processor (multiplierUnlocked is true), allowing overclocking, while the 1345U is locked. The desktop chip uses an Intel Socket 1200 interface, while the mobile chip uses Intel BGA 1744, which is soldered to the motherboard.

Where Each One Wins

The 11600KF wins decisively in multi-threaded and compute-intensive workloads. Its Cinebench R23 multi-core score of 16503 is more than double the 1345U's 7724, making it the clear choice for video rendering, 3D modeling, and batch processing. The 113.7% delta in that test is the largest advantage across all benchmarks. In PassMark extended instructions, the desktop chip scores 17619 versus 9178, a 92% lead, suggesting strong performance in AVX-512 or similar instruction-heavy applications. Data compression also favors the 11600KF heavily, with a 48% advantage (242730 vs 164005), indicating faster file archiving and database operations.

The 1345U wins in single-threaded scenarios, though by small margins. Its PassMark single-thread score of 3415 is only 2.6% higher than the 11600KF's 3327, and its Cinebench R15 single-core lead is 2.5% (240 vs 234). This makes it slightly better for lightly-threaded tasks like web browsing, office productivity, and legacy single-core applications. The mobile chip also brings integrated Iris Xe Graphics, making it suitable for compact systems without discrete GPUs. Its 15-watt TDP and active production status suggest it is intended for current-generation laptops where battery life and thermal management are priorities.

Specification Differences

| Specification | Intel Core i5-11600KF | Intel Core i5-1345U |

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

| Cores | 6 | 10 |

| Base Clock | 3.90 GHz | 1600.00 MHz |

| Boost Clock | 4.90 GHz | 4.70 GHz |

| TDP | 125 W | 15 W |

| Socket | Intel Socket 1200 | Intel BGA 1744 |

| Architecture | Rocket Lake | Raptor Lake |

| Process Node | 14 nm | 10 nm |

| L2 Cache | 512 KB (per core) | 1.25 MB (per core) |

| Memory Support | DDR4 | DDR4, DDR5 |

| Memory Bandwidth | 51.2 GB/s | Not specified |

| PCIe | Gen 4, 20 Lanes (CPU only) | Gen 4, 8 Lanes (CPU only) |

| Integrated Graphics | None | Iris Xe Graphics 80EU |

| Market Segment | Desktop | Mobile |

| Production Status | End-of-life | Active |

| Release Date | 2021-03-15 | 2023-01-03 |

| Launch MSRP | $237 | $309 |

| Multiplier Unlocked | Yes | No |

Head-to-Head Benchmarks

The largest victory for the 11600KF comes in Cinebench R23 multi-core, where it scores 16503 against the 1345U's 7724, a 113.7% advantage. This result highlights the desktop chip's ability to sustain high multi-threaded throughput. In Cinebench R20 multi-core, the margin is 40.2% (6931 vs 4942), and in the single-core variant of that test, the 11600KF leads by 40.3% (978 vs 697). These Cinebench results show that the desktop processor maintains its lead across both single and multi-threaded render workloads, with the single-core R20 gap being notably larger than the R15 gap.

PassMark tests reveal a mixed picture. The 11600KF wins integer math by 21.5% (64195 vs 52847) and floating-point math by 6.1% (38129 vs 35939), showing solid but less dramatic advantages in arithmetic workloads. Its extended instructions score of 17619 is 92% higher than the 1345U's 9178, indicating significant superiority in specialized instruction sets. Random string sorting goes to the desktop chip by 47% (27767 vs 18888), and data compression by 48% (242730 vs 164005). The 1345U's only wins come in PassMark single-thread (3415 vs 3327, a 2.6% lead) and Cinebench R15 single-core (240 vs 234, a 2.5% lead). The mobile chip's data encryption score of 10288 is closer, trailing the 11600KF's 12198 by 18.6%, while its prime number finding score of 47 trails by 25.5% (59 for the desktop chip).

The 11600KF's average benchmark score of 19723 places it 0.3% ahead of the Intel Core i5-12500 and 0.5% ahead of the AMD Ryzen AI 5 430. The 1345U's average of 19411 places it 0.2% ahead of the Intel Core Ultra 5 226V and 0.5% behind the Intel Core i7-10700F. Both processors achieve the same 73rd percentile ranking, but the desktop chip's 14 wins versus 3 for the mobile chip demonstrates its overall performance superiority, particularly in sustained multi-threaded workloads.