Intel Core i3-12100E vs Intel Core i7-1260P Comparison

The Intel Core i7-1260P and Intel Core i3-12100E are both Alder Lake parts, yet they target entirely different market segments. The i7-1260P is a mobile processor for thin-and-light laptops, while the i3-12100E is a desktop chip. Benchmark data reveals a fascinating split: the i7-1260P takes the majority of wins (12 out of 17 head-to-head tests), but the i3-12100E claims victory in several critical workloads, including the most demanding multi-core render test. The data suggests that core count and power envelope matter more than a simple generational label, and the true winner depends heavily on whether sustained all-core loads or bursty single-thread performance is the priority.

Where Each One Wins

The benchmark results indicate a clear division of labor. The Intel Core i7-1260P is the dominant force in tasks that scale with thread count and memory bandwidth. It wins decisively in integer math, floating-point math, data encryption, data compression, and random string sorting. This makes it the stronger choice for productivity suites, database operations, and any workload that can leverage its 12 cores and 16 threads. The i7-1260P also wins in the Cinebench R15 and R20 multi-core tests, indicating strong performance in older render engines that are less optimized for high-frequency single cores.

Conversely, the Intel Core i3-12100E carves out its niche in workloads that favor high clock speeds and efficient single-core execution, or in scenarios where a lower core count with higher base clocks avoids thermal throttling. It wins the Cinebench R23 multi-core test, which is surprising given its 4-core/8-thread configuration. It also wins the PassMark single-thread test and PassMark physics simulation. The i3-12100E’s higher base clock of 3.20 GHz versus the i7-1260P’s 2.10 GHz likely contributes to its edge in these tests. The data implies that for users running modern, well-threaded applications that don’t scale perfectly beyond 8 threads, the i3-12100E’s simpler architecture can be more effective.

Architecture Differences

Both processors share the same Alder Lake architecture and are built on Intel’s 10 nm process node. However, the silicon dies are different. The i7-1260P uses the Alder Lake-P die, which is larger at 217 mm², while the i3-12100E uses the Alder Lake-S die, which is smaller at 163 mm². This size difference reflects a fundamental divergence in design philosophy. The i7-1260P is a hybrid part, likely using a combination of performance and efficiency cores to achieve its 12-core/16-thread count, which is a common approach in mobile processors to balance performance and battery life. The i3-12100E, being a desktop part, uses 4 cores and 8 threads, all of which are standard performance cores.

The cache hierarchy is also a key differentiator. While both have 80 KB of L1 cache per core and 1.25 MB of L2 cache per core, the i7-1260P has a much larger shared L3 cache at 18 MB, compared to the i3-12100E’s 12 MB. This larger L3 cache on the mobile chip likely helps mitigate the latency of its hybrid core topology. The i7-1260P also features a more powerful integrated GPU, the Iris Xe 96EU, versus the UHD Graphics 730 on the i3-12100E. Memory support is identical (DDR4 and DDR5, dual-channel), but the PCIe implementation differs: the i7-1260P uses Gen 4 with 20 lanes, while the i3-12100E uses the newer Gen 5 standard with the same 20 lanes. Finally, the i7-1260P has a significantly lower TDP of 28 watts, designed for mobile cooling, whereas the i3-12100E has a 60-watt TDP, suited for desktop coolers.

Head-to-Head Benchmarks

The data shows a decisive victory for the i7-1260P in raw throughput. In PassMark integer math, the i7-1260P scores 62316, which is a massive 52.4% ahead of the i3-12100E’s 40885. This is the largest delta in the entire comparison. Similarly, in floating-point math, the i7-1260P achieves 42417, a 32.9% advantage over the i3-12100E’s 31919. The i7-1260P also dominates in data encryption, scoring 11238 versus 8069, a 39.3% lead, and in random string sorting, where it scores 20586 against 16089, a 28% advantage. These results clearly show the benefit of having 12 cores and 16 threads when the workload can utilize them.

The i3-12100E fights back in specific areas. Its most significant win is in Cinebench R23 multi-core, where it scores 11559, which is 16% higher than the i7-1260P’s 9711. This is a notable outlier, as the i7-1260P wins the older Cinebench R20 multi-core test by 21% (5874 vs 4854). The newer R23 benchmark likely responds better to the i3-12100E’s higher sustained clock speeds under load. The i3-12100E also wins the PassMark single-thread test, scoring 3438 compared to the i7-1260P’s 3250, a 5.5% difference. It also edges out the i7 in PassMark physics (1185 vs 1092) and extended instructions (10814 vs 10493). In the Cinebench R23 single-core test, the i7-1260P still wins, but only by 6.5% (1737.5 vs 1631), showing the i3 is competitive in single-threaded tasks.

FAQ

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

A: It depends on the benchmark. The i7-1260P wins Cinebench R15 multi-core (1626 vs 1164) and R20 multi-core (5874 vs 4854), but the i3-12100E wins Cinebench R23 multi-core (11559 vs 9711). The i7-1260P also wins PassMark multi-thread (16775 vs 14271).

Q: Which processor has the better single-core performance?

A: The i7-1260P wins in Cinebench R15, R20, and R23 single-core tests (243 vs 164, 829 vs 685, and 1737.5 vs 1631, respectively). However, the i3-12100E wins the PassMark single-thread test with a score of 3438 versus 3250.

Q: How do their cache sizes compare?

A: Both have 80 KB of L1 cache and 1.25 MB of L2 cache per core. The i7-1260P has a larger shared L3 cache of 18 MB, while the i3-12100E has 12 MB of shared L3 cache.

Q: What are the key differences in their PCIe support?

A: The i7-1260P supports PCIe Gen 4 with 20 lanes (CPU only), while the i3-12100E supports PCIe Gen 5 with 20 lanes (CPU only). This gives the desktop i3 a potential bandwidth advantage for newer peripherals.

Q: Which processor consumes more power?

A: The i3-12100E has a higher TDP of 60 watts, compared to the i7-1260P’s 28 watts. This makes the i7-1260P more suitable for laptops, while the i3-12100E is designed for desktop systems.

The Verdict

The data points to a clear recommendation based on use case. For mobile users or those running heavily threaded productivity applications, the Intel Core i7-1260P is the superior choice. Its wins in integer math, floating-point math, and data compression, combined with its lower power envelope, make it an excellent all-rounder for a laptop. The 52.4% lead in integer math over the i3-12100E is a significant advantage for any computational work.

For desktop users building a system where sustained all-core performance is critical, the Intel Core i3-12100E presents a compelling case. Its victory in Cinebench R23 multi-core, despite having only 8 threads, suggests that its higher base clock and desktop power budget allow it to maintain performance over longer periods. The i3-12100E’s win in single-threaded PassMark also makes it a strong option for older games or lightly-threaded applications. The higher TDP of 60 watts is not a drawback in a desktop context. The i3-12100E’s launch MSRP is $125. The i7-1260P, while winning more benchmarks, is a mobile part and cannot be directly compared on a desktop socket.

Specification Differences

| Specification | Intel Core i7-1260P | Intel Core i3-12100E |

| :--- | :--- | :--- |

| Cores | 12 | 4 |

| Threads | 16 | 8 |

| Base Clock | 2.10 GHz | 3.20 GHz |

| Boost Clock | 4.70 GHz | 4.20 GHz |

| TDP | 28 W | 60 W |

| Socket | Intel BGA 1744 | Intel Socket 1700 |

| Codename | Alder Lake-P | Alder Lake-S |

| Die Size | 217 mm² | 163 mm² |

| L3 Cache (shared) | 18 MB | 12 MB |

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

| Integrated Graphics | Iris Xe 96EU | UHD Graphics 730 |

| Market Segment | Mobile | Desktop |

| Part Number | SRLD6 | SRL6U |