Intel Core i3-13100E vs Intel Core i5-1245U Comparison

Head-to-Head Benchmarks

The benchmark data is unambiguous: the Intel Core i5-1245U wins all six head-to-head Cinebench comparisons against the Intel Core i3-13100E. The margins are remarkably consistent, with every test showing a delta between 11.4% and 11.5% in favor of the mobile processor. In Cinebench R23 multi-core, the i5-1245U scores 13053 against 11710 for the i3-13100E, a 11.5% advantage. The single-core result in the same test shows 1842 versus 1653, a 11.4% gap.

The pattern holds across older Cinebench versions as well. In Cinebench R20 multi-core, the i5-1245U records 5482 while the i3-13100E manages 4918, again an 11.5% difference. The single-core R20 scores are 773 and 694 respectively, a 11.4% edge. Cinebench R15 follows the same trajectory: multi-core scores of 1315 versus 1180 and single-core scores of 185 versus 166, both with an 11.4% delta.

The consistency of these margins across every iteration of Cinebench suggests the performance gap is structural rather than workload-specific. The i5-1245U does not merely edge ahead in one test; it sustains the same advantage across single-threaded and multi-threaded workloads alike. The i3-13100E never once takes the lead in any recorded metric.

Considering average benchmark scores, the i5-1245U sits at 3775, placing it in the 56th percentile of all CPUs in the database. Its nearest rival, the AMD Ryzen 7 PRO 2700, scores 3777 with a 0% delta, making them effectively tied. The Intel Core i7-9700KF is 0.3% behind, and the Intel Core i7-8086K trails by 0.6%. The i3-13100E has an average score of 3668, also in the 56th percentile, with the AMD EPYC 7251 just 0.1% ahead and the AMD Ryzen 7 PRO 1700X also 0.1% ahead. The Intel Core i9-10885H is 0.5% behind the i3-13100E.

Architecture Differences

The two processors come from different Intel generations and target different market segments. The i5-1245U is built on Alder Lake architecture with the Alder Lake-U codename, while the i3-13100E uses Raptor Lake architecture with the Raptor Lake-S codename. Both use Intel's 10 nm process node and are fabricated by Intel.

Core counts differ substantially. The i5-1245U packs 10 cores and 12 threads, whereas the i3-13100E has only 4 cores and 8 threads. This core advantage helps explain the multi-core benchmark results, though the i5-1245U also wins single-core tests, so it is not merely a core-count story.

Cache allocations are identical in structure: both have 80 KB L1 per core, 1.25 MB L2 per core, and 12 MB shared L3. The die size is recorded only for the i3-13100E at 163 mm², while no die size is listed for the i5-1245U.

Memory support matches as well, with both accepting DDR4 and DDR5 in dual-channel configuration. Neither has ECC memory support on the i5-1245U, but the i3-13100E does support ECC memory, a notable distinction for reliability-focused desktop builds.

PCIe connectivity differs. The i5-1245U offers Gen 4 with 20 lanes from the CPU, while the i3-13100E provides Gen 5 with 16 lanes. The i3-13100E therefore has a newer PCIe generation but fewer lanes.

Integrated graphics sets them apart. The i5-1245U carries Iris Xe 80EU graphics, a more capable integrated solution, whereas the i3-13100E uses UHD Graphics 730. The i5-1245U is a mobile part on the Intel BGA 1744 socket, while the i3-13100E is a desktop processor on Intel Socket 1700.

Clock speeds show a split. The i3-13100E has a higher base clock of 3.30 GHz against 1.60 GHz for the i5-1245U, but both boost to exactly 4.40 GHz. The i3-13100E also has a much higher TDP at 60 watts versus 15 watts for the i5-1245U, reflecting the desktop part's power budget.

Release timing differs by roughly eleven months. The i5-1245U launched on 2022-02-22, while the i3-13100E arrived on 2023-01-03. Both remain in active production. Neither has an unlocked multiplier. The i5-1245U carries part numbers SRLFSSRLWY, and the i3-13100E is identified as SRMFR. The i3-13100E has a launch MSRP of $480.

Where Each One Wins

The i5-1245U wins every benchmark category recorded in the database. In multi-core workloads, its 10 cores and 12 threads provide a clear structural advantage over the 4-core, 8-thread i3-13100E, and the Cinebench R23 multi-core score of 13053 versus 11710 confirms this. For users running heavily threaded applications such as video encoding, 3D rendering, or compilation tasks, the i5-1245U is the stronger choice according to the data.

The single-core results are more surprising given the i3-13100E's higher base clock. The i5-1245U still wins Cinebench R23 single-core with 1842 against 1653, a 11.4% margin. This suggests the i5-1245U's boost behavior and architecture deliver better per-thread performance despite the i3-13100E's clock advantage on paper.

The i3-13100E does not win any of the six head-to-head tests. However, its profile still has strengths in the database. It supports ECC memory, which the i5-1245U does not, and it offers PCIe Gen 5 connectivity with 16 lanes. Its 60-watt TDP and desktop socket make it suitable for systems where sustained power delivery is less constrained. The i3-13100E also has a recorded Geekbench multi-core score of 7025 and a single-core score of 2001, though no Geekbench result exists for the i5-1245U in the database for direct comparison.

For mobile or space-constrained builds, the i5-1245U's 15-watt TDP and integrated Iris Xe 80EU graphics make it the pragmatic option. The i3-13100E's UHD Graphics 730 is less capable on paper, and its 60-watt TDP demands more robust cooling.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core i5-1245U has 10 cores and 12 threads, while the Intel Core i3-13100E has 4 cores and 8 threads.

Q: What are the Cinebench R23 multi-core scores?

A: The i5-1245U scores 13053, and the i3-13100E scores 11710, giving the i5-1245U an 11.5% advantage.

Q: Do both processors support the same memory types?

A: Yes, both support DDR4 and DDR5 in dual-channel configuration. However, only the i3-13100E supports ECC memory.

Q: Which processor has the higher base clock?

A: The i3-13100E has a base clock of 3.30 GHz, compared to 1.60 GHz for the i5-1245U. Both boost to 4.40 GHz.

Q: Are these processors in the same performance percentile?

A: Both are in the 56th percentile of all CPUs in the database. The i5-1245U has an average benchmark score of 3775, while the i3-13100E averages 3668.

Q: What sockets do these processors use?

A: The i5-1245U uses Intel BGA 1744, a mobile socket, while the i3-13100E uses Intel Socket 1700 for desktop systems.

Specification Differences

| Specification | Intel Core i5-1245U | Intel Core i3-13100E |

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

| Cores | 10 | 4 |

| Threads | 12 | 8 |

| Base Clock | 1.60 GHz | 3.30 GHz |

| Boost Clock | 4.40 GHz | 4.40 GHz |

| TDP | 15 W | 60 W |

| Socket | Intel BGA 1744 | Intel Socket 1700 |

| Architecture | Alder Lake | Raptor Lake |

| Codename | Alder Lake-U | Raptor Lake-S |

| Generation | Core i5 (Alder Lake-U) | Core i3 (Raptor Lake) |

| Die Size | Not listed | 163 mm² |

| ECC Memory | No | Yes |

| PCIe | Gen 4, 20 Lanes (CPU only) | Gen 5, 16 Lanes (CPU only) |

| Integrated Graphics | Iris Xe 80EU | UHD Graphics 730 |

| Market Segment | Mobile | Desktop |

| Release Date | 2022-02-22 | 2023-01-03 |

| Launch MSRP | None listed | $480 |

| Part Number | SRLFSSRLWY | SRMFR |

The Verdict

The data points to a clear winner for raw performance: the Intel Core i5-1245U beats the Intel Core i3-13100E in every recorded Cinebench test, with margins between 11.4% and 11.5%. Its 10-core, 12-thread configuration and superior single-core scores make it the stronger processor for both threaded and single-threaded workloads. Users prioritizing benchmark performance should select the i5-1245U without hesitation.

The i3-13100E is not without merit, but its advantages lie outside the benchmark suite. ECC memory support and PCIe Gen 5 connectivity are meaningful for specific desktop workloads, and its 60-watt TDP alongside a desktop socket suits systems designed for continuous operation. Its 4.40 GHz boost clock matches the i5-1245U, and its base clock is higher, but the recorded results show the i5-1245U still outperforms it in practice.

For mobile deployments, low-power builds, or any scenario where the 15-watt TDP and integrated Iris Xe graphics matter, the i5-1245U is the obvious pick. For desktop users who require ECC memory, the i3-13100E is the only one of the two that qualifies. Otherwise, the benchmark data consistently favors the i5-1245U across every test in the database.