Intel Core i3-14100 vs Intel Core Ultra 7 366H Comparison

The Verdict

The benchmark data presents a decisive outcome: the Intel Core Ultra 7 366H wins all 17 head-to-head comparisons against the Intel Core i3-14100. The Core Ultra 7 366H delivers substantially higher scores across every recorded workload, from single-threaded tasks to heavily parallelized rendering. The Core i3-14100 does not claim a single victory in the recorded data.

The Core Ultra 7 366H sits in the 87th percentile of all CPUs in the database, while the Core i3-14100 lands in the 72nd percentile. The average benchmark score for the Core Ultra 7 366H is 41263, compared to 18318 for the Core i3-14100. That gap is more than double, and it appears consistently in every test category.

For desktop users who prioritize low power consumption and a compact platform, the Core i3-14100 remains a functional option, but the data shows it is clearly outclassed by the mobile Core Ultra 7 366H in raw performance. The Core i3-14100 uses a 60 W TDP and supports DDR4 and DDR5 memory, which may appeal to builders seeking flexibility with older memory modules. However, the performance deficit is stark: in Cinebench R23 multi-core, the Core Ultra 7 366H scores 28477 versus 12820 for the Core i3-14100, a 55% advantage.

The Core Ultra 7 366H is the choice for anyone who needs maximum throughput, as it also leads in single-core performance. In Cinebench R23 single-core, the Core Ultra 7 366H scores 4020 versus 1809 for the Core i3-14100, a 55% lead. The mobile chip also excels in integer math (83695 versus 45329) and floating-point math (103615 versus 35266).

For laptop buyers, the Core Ultra 7 366H offers a 25 W TDP, which is remarkably efficient given its performance level. The Core i3-14100, with its 60 W TDP, is a desktop part that draws more power but delivers far less compute. The data strongly favors the Core Ultra 7 366H for any workload that benefits from more cores, higher clock speeds, or a more advanced process node.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core Ultra 7 366H has 16 cores and 16 threads, while the Intel Core i3-14100 has 4 cores and 8 threads. The Core Ultra 7 366H also has a higher boost clock at 4.80 GHz versus 4.70 GHz for the Core i3-14100.

Q: What is the performance difference in multi-core workloads?

A: The Core Ultra 7 366H leads by 55% in Cinebench R23 multi-core (28477 versus 12820), and by 54.8% in PassMark multithread (33429 versus 15095). In Cinebench R20 multi-core, the margin is also 55% (11960 versus 5384).

Q: How do the two processors compare in single-core performance?

A: The Core Ultra 7 366H wins every single-core test. In Cinebench R23 single-core, it scores 4020 versus 1809, a 55% lead. PassMark single-thread shows a narrower gap: 4043 versus 3759, a 7% advantage for the Core Ultra 7 366H.

Q: What are the memory support differences?

A: The Core i3-14100 supports DDR4 and DDR5 memory, while the Core Ultra 7 366H supports DDR5 and LPDDR5X. Both use dual-channel memory buses. The Core Ultra 7 366H has a recorded memory bandwidth of 115.2 GB/s; no bandwidth figure is recorded for the Core i3-14100.

Q: Which processor has a more advanced manufacturing process?

A: The Core Ultra 7 366H uses a 3 nm process node, while the Core i3-14100 uses a 10 nm node. Both are manufactured by Intel.

Q: Do these processors support ECC memory?

A: The Core i3-14100 supports ECC memory, while the Core Ultra 7 366H does not.

Architecture Differences

The two processors come from fundamentally different design families. The Intel Core i3-14100 is based on the Raptor Lake architecture, specifically the Raptor Lake-R refresh, and belongs to the Core 14th Gen series. The Intel Core Ultra 7 366H uses the Panther Lake architecture, with the Panther Lake-H codename, and is part of the Core Ultra Series 3.

The process node differs significantly: the Core i3-14100 is built on a 10 nm process, while the Core Ultra 7 366H uses a 3 nm process. Both are fabricated by Intel. The die size for the Core i3-14100 is recorded as 163 mm², while no die size is listed for the Core Ultra 7 366H. Transistor counts are not available for either chip.

Cache hierarchies diverge as well. The Core i3-14100 has 80 KB of L1 cache per core, 1.25 MB of L2 cache per core, and 12 MB of shared L3 cache. The Core Ultra 7 366H has 192 KB of L1 cache per core, 2.5 MB of L2 cache per core, and 18 MB of shared L3 cache. The larger per-core caches on the Core Ultra 7 366H align with its higher core count and more advanced architecture.

The integrated graphics differ: the Core i3-14100 uses UHD Graphics 730, while the Core Ultra 7 366H uses Intel Xe3 Graphics. The Core Ultra 7 366H also lists a higher memory bandwidth of 115.2 GB/s, though the Core i3-14100 has no recorded bandwidth figure.

PCIe support varies. The Core i3-14100 provides Gen 5 with 16 lanes (CPU only), while the Core Ultra 7 366H provides Gen 5 with 12 lanes (CPU only). The socket types are not comparable: the Core i3-14100 uses Intel Socket 1700 for desktops, and the Core Ultra 7 366H uses Intel BGA 2540 for mobile platforms.

Specification Differences

The recorded specifications show clear separation between the two parts. The Core i3-14100 has 4 cores and 8 threads, whereas the Core Ultra 7 366H has 16 cores and 16 threads. Base clocks differ: 3.50 GHz for the Core i3-14100 versus 2.00 GHz for the Core Ultra 7 366H. Boost clocks are closer, with 4.70 GHz versus 4.80 GHz, favoring the Core Ultra 7 366H.

TDP is a major distinction. The Core i3-14100 is rated at 60 W, while the Core Ultra 7 366H is rated at 25 W. The Core i3-14100 is a desktop part, and the Core Ultra 7 366H is a mobile part. The Core i3-14100 supports DDR4 and DDR5 memory; the Core Ultra 7 366H supports DDR5 and LPDDR5X. ECC memory is supported only on the Core i3-14100.

The Core i3-14100 has a recorded launch MSRP of $134, while the Core Ultra 7 366H has no recorded launch MSRP. Neither processor has an unlocked multiplier. The release dates differ: the Core i3-14100 was released on 2024-01-07, and the Core Ultra 7 366H on 2026-01-04. Both are listed as active in production.

The Core i3-14100 has a part number of SRMX1, and the Core Ultra 7 366H has a part number of SA4R9Q9EL. The Core i3-14100 belongs to the Core i3 (Raptor Lake Refresh) generation, while the Core Ultra 7 366H is in the Ultra 7 (Panther Lake-H) generation.

Head-to-Head Benchmarks

The Core Ultra 7 366H wins all 17 recorded benchmarks, with margins ranging from 7% to 83.1%. The smallest gap appears in PassMark single-thread and single-thread tests, where the Core Ultra 7 366H scores 4043 versus 3759 for the Core i3-14100, a 7% lead. This indicates that the Core i3-14100 is not entirely outmatched in lightly threaded tasks, but it still trails.

The largest margin is in PassMark find prime numbers, where the Core Ultra 7 366H scores 326 versus 55, a 83.1% advantage. This test is heavily dependent on integer and cryptographic operations, and the Core Ultra 7 366H's 16 cores and larger cache structure provide a massive edge.

In Cinebench tests, the Core Ultra 7 366H consistently leads by 55% across R15, R20, and R23, for both multi-core and single-core variants. For example, Cinebench R15 multi-core shows 2870 versus 1292, and Cinebench R15 single-core shows 405 versus 182. The same 55% delta appears in R20 multi-core (11960 versus 5384) and R20 single-core (1688 versus 759). Cinebench R23 multi-core is 28477 versus 12820, and R23 single-core is 4020 versus 1809.

PassMark tests reveal a similar pattern. Data compression shows 327455 versus 174115, a 46.8% lead for the Core Ultra 7 366H. Data encryption shows 25845 versus 8838, a 65.8% margin. Extended instructions show 26901 versus 11865, a 55.9% gap. Floating-point math shows 103615 versus 35266, a 66% advantage. Integer math shows 83695 versus 45329, a 45.8% lead. Multithread shows 33429 versus 15095, a 54.8% margin. Physics shows 2880 versus 958, a 66.7% gap. Random string sorting shows 39814 versus 17397, a 56.3% lead.

The average benchmark score for the Core Ultra 7 366H is 41263, compared to 18318 for the Core i3-14100. The Core Ultra 7 366H's nearest rivals include the Intel Core Ultra 7 356H (avg score 41215, delta 0.1%), the AMD Ryzen AI 5 PRO 440 (avg score 41208, delta 0.1%), the AMD Ryzen 9 5900X (avg score 41376, delta -0.3%), and the Intel Core Ultra X7 358H (avg score 40967, delta 0.7%). The Core i3-14100's nearest rivals include the Intel Core 3 305 (avg score 18302, delta 0.1%), the Intel Core 5 330 (avg score 18345, delta -0.1%), the Intel Core 7 360 (avg score 18374, delta -0.3%), and the Intel Core i3-13100 (avg score 18380, delta -0.3%).

The percentile rankings reinforce the performance chasm. The Core Ultra 7 366H sits at the 87th percentile, while the Core i3-14100 sits at the 72nd percentile. Across every workload category in the database, the Core Ultra 7 366H delivers higher throughput, and the recorded deltas show no workload where the Core i3-14100 narrows the gap to a competitive level. The data is unambiguous: the Core Ultra 7 366H is the superior processor in this comparison.