Intel Core i9-14901E vs Intel Core Ultra 7 366H Comparison

Where Each One Wins

The benchmark split is decisively lopsided. The Intel Core Ultra 7 366H wins 13 of 17 head-to-head tests, while the Intel Core i9-14901E takes only 4. The Ultra 7 366H dominates across rendering workloads, data compression, encryption, extended instructions, prime number finding, floating point math, multithreaded performance, and random string sorting. The i9-14901E counters with wins in integer math, physics simulation, and single-threaded PassMark tests.

The use-case split follows the data closely. The Ultra 7 366H is the stronger choice for content creation and productivity workloads that rely on Cinebench rendering, data compression, and encryption. Its 11.8% advantage in data compression and 28.1% lead in data encryption indicate substantial throughput gains for archiving, database operations, and secure communications tasks. The 35.9% margin in extended instructions and 42% lead in prime number finding point to superior performance in cryptography, scientific computing, and integer-heavy algorithmic workloads.

The i9-14901E claims a different territory. Its 34.7% victory in integer math is the largest margin of any benchmark in either direction. Physics simulation shows a 5.6% edge, suggesting better performance in physics-based game logic or simulation environments. PassMark single-threaded results give it a 7.7% lead, indicating a stronger foundation for lightly threaded applications where per-core speed matters more than parallel scaling.

The overall average benchmark score confirms the Ultra 7 366H as the faster processor: 41263 versus 37911, a difference that places it in the 87th percentile of all CPUs compared to the i9-14901E's 86th percentile. The nearest rival data reinforces this positioning, with the Ultra 7 366H sitting within 0.7% of the Intel Core Ultra X7 358H and essentially tied with the AMD Ryzen 9 5900X at a -0.3% delta.

Architecture Differences

The two processors represent fundamentally different Intel design generations. The i9-14901E uses Raptor Lake architecture on a 10 nm process node, while the Ultra 7 366H uses Panther Lake on a 3 nm node. Both are fabricated by Intel, but the process shrink is significant, enabling different transistor density and power characteristics.

Core counts diverge sharply. The i9-14901E has 8 cores and 16 threads, a conventional arrangement with hyperthreading. The Ultra 7 366H has 16 cores and 16 threads, meaning it relies on physical cores without hyperthreading to reach its thread count. This explains the Ultra 7 366H's multi-core wins despite having the same thread count.

Cache hierarchies also differ. The i9-14901E provides 80 KB of L1 per core, 2 MB of L2 per core, and 36 MB of shared L3 cache. The Ultra 7 366H offers 192 KB of L1 per core, 2.5 MB of L2 per core, but only 18 MB of shared L3 cache. The i9-14901E's larger L3 pool may help it in workloads with high cache reuse, while the Ultra 7 366H's larger per-core L1 and L2 allocations benefit single-thread responsiveness.

Memory support separates the two as well. The i9-14901E supports DDR4 and DDR5, while the Ultra 7 366H supports DDR5 and LPDDR5X. The Ultra 7 366H lists a memory bandwidth figure of 115.2 GB/s, whereas the i9-14901E does not report a bandwidth number. ECC memory is supported on the i9-14901E but not on the Ultra 7 366H, a meaningful distinction for reliability-sensitive deployments.

PCIe configurations differ: the i9-14901E provides Gen 5 with 16 lanes from the CPU, the Ultra 7 366H provides Gen 5 with 12 lanes. Integrated graphics also change, with the i9-14901E using UHD Graphics 770 and the Ultra 7 366H using Intel Xe3 Graphics.

Head-to-Head Benchmarks

Cinebench results show a consistent 9.6% advantage for the Ultra 7 366H across all six tests. In Cinebench R23 multi-core, the Ultra 7 366H scores 28477 against 25753 for the i9-14901E. Single-core R23 shows 4020 versus 3635. The same 9.6% gap repeats in R15 and R20 for both multi-core and single-core, indicating a uniform performance advantage regardless of the rendering benchmark version.

PassMark tests reveal larger disparities. Data compression favors the Ultra 7 366H at 327455 versus 288777, an 11.8% lead. Data encryption shows 25845 versus 18571, a 28.1% gap. Extended instructions deliver 26901 versus 17249, a 35.9% margin. Prime number finding is the most lopsided: 326 versus 189, a 42% advantage for the Ultra 7 366H. Floating point math scores 103615 versus 81089, a 21.7% lead.

The i9-14901E's wins are concentrated but decisive. Integer math shows 112736 versus 83695, a 34.7% margin that is the largest single delta in either direction. Physics results give the i9-14901E 3041 versus 2880, a 5.6% edge. PassMark single-thread and single-threaded tests both show 4354 versus 4043, a 7.7% lead.

Multithreaded PassMark favors the Ultra 7 366H at 33429 versus 30298, a 9.4% gap. Random string sorting is close: 39814 versus 39138, only 1.7% apart, but still a win for the Ultra 7 366H.

Specification Differences

The two processors differ on every major specification field except manufacturer and production status. Both are Intel parts and both are listed as Active in production.

Clock speeds favor the i9-14901E. Its base clock is 2.80 GHz versus 2.00 GHz for the Ultra 7 366H. Boost clock reaches 5.60 GHz on the i9-14901E versus 4.80 GHz on the Ultra 7 366H. This clock advantage explains the i9-14901E's single-thread PassMark win despite the Ultra 7 366H's newer architecture.

Power consumption is dramatically different. The i9-14901E has a 65 watt TDP, while the Ultra 7 366H draws only 25 watts. This makes the Ultra 7 366H substantially more efficient per watt, though the database does not include efficiency ratios.

Socket and market segment reflect their intended platforms. The i9-14901E uses Intel Socket 1700 and targets the desktop segment. The Ultra 7 366H uses Intel BGA 2540 and targets mobile. The i9-14901E has a 257 mm² die size, while the Ultra 7 366H does not report a die size.

Release dates differ by roughly a year and a half. The i9-14901E was released on 2024-06-30, the Ultra 7 366H on 2026-01-04. Neither processor is multiplier-unlocked, and both have distinct part numbers: Q49ESRNJH for the i9-14901E, SA4R9Q9EL for the Ultra 7 366H.

FAQ

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

A: The Intel Core Ultra 7 366H wins all Cinebench multi-core tests by 9.6%. In R23 multi-core, it scores 28477 against 25753 for the i9-14901E.

Q: Does the i9-14901E win any benchmarks?

A: Yes, it wins 4 of 17 tests: PassMark integer math (112736 versus 83695, a 34.7% lead), PassMark physics (3041 versus 2880, a 5.6% lead), and both PassMark single-thread tests (4354 versus 4043, a 7.7% lead).

Q: Why does the Ultra 7 366H have more cores but the same threads?

A: The Ultra 7 366H has 16 cores and 16 threads, meaning no hyperthreading. The i9-14901E has 8 cores and 16 threads, using hyperthreading to double its thread count.

Q: Which processor supports ECC memory?

A: The Intel Core i9-14901E supports ECC memory. The Intel Core Ultra 7 366H does not.

Q: What is the memory bandwidth difference?

A: The Ultra 7 366H reports 115.2 GB/s memory bandwidth. The i9-14901E does not report a bandwidth figure in the database.

Q: How do their overall benchmark scores compare?

A: The Ultra 7 366H averages 41263 across all benchmarks, placing it in the 87th percentile. The i9-14901E averages 37911, placing it in the 86th percentile.

The Verdict

The Intel Core Ultra 7 366H is the faster processor in the majority of measured workloads. Its 13 wins versus 4 wins for the i9-14901E, combined with an average benchmark score of 41263 versus 37911, makes it the clear choice for multi-threaded rendering, data compression, encryption, and floating point operations. The 9.6% Cinebench advantage across all versions indicates consistent rendering performance, while the 42% lead in prime number finding and 35.9% lead in extended instructions show strong algorithmic throughput.

The i9-14901E retains relevance for specific use cases. Its 34.7% margin in integer math is the largest single benchmark win in the comparison, and its 7.7% single-thread PassMark lead, driven by a 5.60 GHz boost clock versus 4.80 GHz, makes it preferable for applications that depend on raw per-core speed. The physics win of 5.6% adds another niche where the older architecture holds an edge.

For desktop users with Socket 1700 boards, the i9-14901E offers a 65 watt TDP, ECC memory support, DDR4 compatibility, and 16 PCIe Gen 5 lanes. For mobile platforms, the Ultra 7 366H delivers higher performance at 25 watts, supports LPDDR5X, and uses Intel Xe3 Graphics. The data does not show a single winner across all scenarios; it shows the Ultra 7 366H winning the majority of performance tests while the i9-14901E wins specific integer, physics, and single-thread workloads.