Intel Core i7-14701E vs Intel Core Ultra 7 366H Comparison

Head-to-Head Benchmarks

The data shows a decisive overall victory for the Intel Core Ultra 7 366H, which wins 15 of the 17 recorded comparisons. The only two wins for the Intel Core i7-14701E come in the PassMark single-thread tests, where it scores 4305 against 4043 for the Ultra 7 366H, a 6.5% advantage. Every other benchmark, including all six Cinebench tests, favors the mobile chip.

The largest margin belongs to the PassMark find prime numbers test, where the Ultra 7 366H scores 326 versus 176 for the i7-14701E, a 46% gap. The data encryption test shows a 42.5% difference (25845 versus 14862), and floating point math shows a 40.3% difference (103615 versus 61873). These are substantial leads that indicate a major throughput advantage in mathematically intensive workloads.

The Cinebench results are remarkably consistent. Across R15, R20, and R23, the Ultra 7 366H holds a 22.1% lead in both single-core and multi-core tests. For example, Cinebench R23 multi-core shows 28477 for the Ultra 7 366H versus 22195 for the i7-14701E, while the single-core test shows 4020 versus 3133. The same 22.1% delta appears in R15 (405 versus 315 single-core, 2870 versus 2237 multi-core) and R20 (1688 versus 1315 single-core, 11960 versus 9321 multi-core). This consistency suggests the architectural advantage is uniform across rendering workloads, not a result of a single optimized test.

The PassMark multi-thread test shows a 21.9% lead for the Ultra 7 366H (33429 versus 26112). The data compression test shows a 13.6% lead (327455 versus 282939). Extended instructions show a 31.1% lead (26901 versus 18528). Random string sorting shows a 26.8% lead (39814 versus 29158). Physics shows a 16.7% lead (2880 versus 2399). The narrowest multi-core margin is integer math, where the Ultra 7 366H scores 83695 against 81325, just 2.8% ahead.

The overall average benchmark score for the Ultra 7 366H is 41263, placing it in the 87th percentile of all CPUs in the database. The i7-14701E averages 33206, which places it in the 83rd percentile. The nearest rival to the Ultra 7 366H is the Intel Core Ultra 7 356H with an average score of 41215 (0.1% delta), followed by the AMD Ryzen AI 5 PRO 440 at 41208 (0.1% delta) and the AMD Ryzen 9 5900X at 41376 (a 0.3% gap in the opposite direction). The i7-14701E sits closest to the AMD Ryzen 9 PRO 6950H at 33201 (0% delta) and the AMD Ryzen 5 8645HS at 33244 (0.1% gap).

Architecture Differences

The two processors represent different Intel design philosophies. The i7-14701E uses the Raptor Lake architecture on a 10 nm process node, with a die size of 257 mm². It has 8 cores and 16 threads, a base clock of 2.60 GHz, and a boost clock of 5.40 GHz. The Ultra 7 366H uses the Panther Lake architecture on a 3 nm process node, with 16 cores and 16 threads, a base clock of 2.00 GHz, and a boost clock of 4.80 GHz. The i7-14701E has a higher boost clock by 0.60 GHz, yet it loses every single-core Cinebench test by 22.1%, which indicates the Panther Lake core design delivers more instructions per clock.

Cache configurations differ significantly. The i7-14701E has 80 KB of L1 cache per core, 2 MB of L2 cache per core, and 33 MB of shared L3 cache. The 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 L3 cache is nearly double on the desktop chip, but the per-core L1 and L2 allocations are larger on the mobile chip. This suggests the Ultra 7 366H relies more on per-core cache locality, while the i7-14701E benefits from a larger shared pool.

Memory support also diverges. The i7-14701E supports both DDR4 and DDR5 in a dual-channel configuration. The Ultra 7 366H supports DDR5 and LPDDR5X, also dual-channel, with a recorded memory bandwidth of 115.2 GB/s. The i7-14701E supports ECC memory, while the Ultra 7 366H does not. PCIe lane counts differ: the i7-14701E provides 16 CPU lanes of Gen 5, while the Ultra 7 366H provides 12 CPU lanes of Gen 5.

The integrated graphics differ as well. The i7-14701E uses UHD Graphics 770, while the Ultra 7 366H uses Intel Xe3 Graphics. The socket types are incompatible: the i7-14701E uses Intel Socket 1700 for desktop, and the Ultra 7 366H uses Intel BGA 2540 for mobile. The TDP ratings reflect their market segments: 65 W for the desktop chip versus 25 W for the mobile chip. The i7-14701E was released on 2024-06-30, and the Ultra 7 366H on 2026-01-04. Neither processor has an unlocked multiplier. The part numbers are Q49FSRNJK for the i7-14701E and SA4R9Q9EL for the Ultra 7 366H.

FAQ

Q: Which processor has the higher single-core Cinebench score?

A: The Intel Core Ultra 7 366H leads in all single-core Cinebench tests. In Cinebench R23, it scores 4020 versus 3133 for the i7-14701E, a 22.1% advantage.

Q: Does the i7-14701E win any benchmark?

A: Yes, the i7-14701E wins the PassMark single-thread test with a score of 4305 against 4043 for the Ultra 7 366H, a 6.5% lead. This result appears twice in the recorded data under both "passmark_single_thread" and "passmark_singlethread".

Q: How do the core counts compare?

A: The Ultra 7 366H has 16 cores and 16 threads. The i7-14701E has 8 cores and 16 threads. Both have equal thread counts, but the Ultra 7 366H has twice the physical cores.

Q: Which processor has a higher TDP?

A: The i7-14701E has a TDP of 65 W, while the Ultra 7 366H has a TDP of 25 W. The desktop chip consumes more power, yet it loses most performance comparisons.

Q: What is the largest performance gap between the two?

A: The PassMark find prime numbers test shows the largest gap, with the Ultra 7 366H scoring 326 versus 176 for the i7-14701E, a 46% difference.

Q: Which processor supports ECC memory?

A: Only the i7-14701E supports ECC memory. The Ultra 7 366H does not, though it supports DDR5 and LPDDR5X memory types.

The Verdict

The benchmark data is unambiguous. The Intel Core Ultra 7 366H outperforms the Intel Core i7-14701E in 15 of 17 comparisons, with an average benchmark score of 41263 versus 33206. The only exception is the PassMark single-thread test, where the i7-14701E leads by 6.5%. All Cinebench tests, regardless of version or thread count, show the same 22.1% lead for the Ultra 7 366H. The mobile chip also leads in every PassMark multi-thread metric, with margins ranging from 2.8% to 46%. The i7-14701E retains a niche advantage in one specific single-threaded PassMark metric, but this does not offset the broad performance deficit across rendering, encryption, compression, and math workloads.

The percentile data confirms the gap. The Ultra 7 366H sits in the 87th percentile of all CPUs, while the i7-14701E sits in the 83rd. The nearest rivals for the Ultra 7 366H are other recent mobile and desktop chips (Ultra 7 356H, Ryzen AI 5 PRO 440, Ryzen 9 5900X) all within a 0.7% delta. The i7-14701E sits alongside the Ryzen 9 PRO 6950H and Ryzen 5 8645HS with essentially identical average scores. The performance hierarchy in the database places the Ultra 7 366H clearly above the i7-14701E.

Specification Differences

The two processors differ in nearly every recorded specification. The i7-14701E has 8 cores and 16 threads; the Ultra 7 366H has 16 cores and 16 threads. Base clocks are 2.60 GHz versus 2.00 GHz, and boost clocks are 5.40 GHz versus 4.80 GHz. TDP is 65 W versus 25 W. The socket is Intel Socket 1700 versus Intel BGA 2540. Architecture is Raptor Lake versus Panther Lake, with process nodes of 10 nm versus 3 nm. Die size is 257 mm² for the i7-14701E, with no die size recorded for the Ultra 7 366H.

Cache specifications differ across all levels. L1 cache is 80 KB per core for the i7-14701E versus 192 KB per core for the Ultra 7 366H. L2 cache is 2 MB per core versus 2.5 MB per core. L3 cache is 33 MB shared versus 18 MB shared. Memory support is DDR4 and DDR5 for the i7-14701E, versus DDR5 and LPDDR5X for the Ultra 7 366H. The Ultra 7 366H has a recorded memory bandwidth of 115.2 GB/s; the i7-14701E has no bandwidth figure recorded. ECC support is true for the i7-14701E and false for the Ultra 7 366H. PCIe lanes are 16 for the i7-14701E and 12 for the Ultra 7 366H, both Gen 5. Integrated graphics are UHD Graphics 770 versus Intel Xe3 Graphics. Market segments are Desktop versus Mobile. Release dates are 2024-06-30 versus 2026-01-04. Neither has an unlocked multiplier.

Where Each One Wins

The Intel Core Ultra 7 366H wins across rendering workloads, as shown by the identical 22.1% lead in every Cinebench version. It also wins in data compression (13.6% lead), data encryption (42.5% lead), extended instructions (31.1% lead), prime number calculations (46% lead), floating point math (40.3% lead), integer math (2.8% lead), multi-thread performance (21.9% lead), physics (16.7% lead), and random string sorting (26.8% lead). This is a comprehensive sweep of multi-threaded and most single-threaded workloads.

The Intel Core i7-14701E wins only in the PassMark single-thread test, scoring 4305 versus 4043, a 6.5% margin. This advantage appears in both recorded instances of that test. The i7-14701E also offers ECC memory support and a desktop socket, which matters for systems requiring error-correcting memory. Its 33 MB of shared L3 cache is nearly double the 18 MB on the Ultra 7 366H, which may benefit certain cache-sensitive workloads despite the benchmark results. The higher boost clock of 5.40 GHz versus 4.80 GHz does not translate into Cinebench single-core wins, but it does correlate with the PassMark single-thread result.

For mobile platforms, the Ultra 7 366H is the clear choice based on performance. For desktop systems with ECC requirements, the i7-14701E offers a feature the Ultra 7 366H lacks. The data does not support choosing the i7-14701E for raw performance, as it loses 15 of 17 comparisons. The Ultra 7 366H delivers higher scores in rendering, encryption, compression, and math, with a lower TDP of 25 W versus 65 W. The only scenario where the i7-14701E wins from the recorded data is the specific PassMark single-thread test, where its 6.5% lead stands alone.