Intel Core i7-14700HX vs Intel Core Ultra 7 366H Comparison

Intel Core i7-14700HX and Intel Core Ultra 7 366H represent two distinct design philosophies within Intel mobile lineups, and the recorded benchmark data shows a clear split: the Core i7-14700HX wins 8 of 17 head-to-head tests, while the Core Ultra 7 366H wins 9. The Core i7-14700HX dominates in raw multi-threaded throughput and integer-heavy workloads, whereas the Core Ultra 7 366H counters with superior single-thread performance, higher peak clocks in specific tests, and better efficiency-oriented metrics. Neither chip is universally faster, and the choice hinges entirely on workload type.

Where Each One Wins

The Intel Core i7-14700HX is the clear winner in applications that scale with core count and parallel processing. Its 20 cores and 28 threads give it a structural advantage in multi-threaded rendering and data manipulation tasks. In Cinebench R15 multicore, the Core i7-14700HX scores 3812 against 2870 for the Core Ultra 7 366H, a 32.8% lead. The PassMark integer math test shows an even larger gap, with the Core i7-14700HX scoring 131296 versus 83695, a 56.9% advantage. Data compression also favors the Core i7-14700HX, with a score of 438539 compared to 327455, a 33.9% differential. Random string sorting goes to the Core i7-14700HX at 48544 versus 39814, a 21.9% win. The multithread PassMark score confirms the trend, with the Core i7-14700HX at 36566 against 33429, a 9.4% edge. Data encryption is nearly tied, but the Core i7-14700HX still leads at 26092 versus 25845, a 1% margin. These results indicate the Core i7-14700HX is better suited for content creation, database operations, and any workload that distributes across many threads.

The Intel Core Ultra 7 366H wins where single-thread performance and per-core efficiency matter most. Its most striking victory is in Cinebench R23 singlecore, where it scores 4020 versus 2103 for the Core i7-14700HX, a 47.7% advantage. Cinebench R15 singlecore also goes to the Core Ultra 7 366H, with 405 against 296, a 26.9% lead. The PassMark single-thread test is closer, with the Core Ultra 7 366H scoring 4043 versus 3947, a 2.4% edge. Prime number finding shows a massive per-core advantage, with the Core Ultra 7 366H scoring 326 versus 165, a 49.4% lead. Floating point math favors the Core Ultra 7 366H at 103615 versus 93836, a 9.4% win, and physics simulation follows with 2880 versus 2252, a 21.8% edge. Extended instructions also go to the Core Ultra 7 366H, at 26901 versus 25718, a 4.4% margin. In Cinebench R23 multicore, the Core Ultra 7 366H surprisingly wins at 28477 versus 24595, a 13.6% advantage, despite having fewer cores, indicating superior scaling under that specific workload. The Core Ultra 7 366H is thus better for interactive applications, legacy single-threaded software, and tasks that rely on high per-core clocks.

Architecture Differences

The two processors are built on fundamentally different architectures and process nodes. The Intel Core i7-14700HX uses the Raptor Lake architecture, specifically Raptor Lake-HX, and is manufactured on Intel's 10 nm process. It features 20 cores and 28 threads, which is a hybrid configuration of performance and efficiency cores typical of that generation. Its L1 cache is 80 KB per core, L2 is 2 MB per core, and L3 is 33 MB shared. The Core Ultra 7 366H, by contrast, uses the Panther Lake architecture, codenamed Panther Lake-H, and is built on Intel's 3 nm process. It has 16 cores and 16 threads, which is a different core topology with no hyper-threading. Its cache hierarchy is larger per core, with L1 at 192 KB per core and L2 at 2.5 MB per core, but the shared L3 is smaller at 18 MB. The Core Ultra 7 366H also has a lower base clock of 2.00 GHz versus 2.10 GHz for the Core i7-14700HX, but a lower boost clock of 4.80 GHz against 5.50 GHz. The process node difference is significant, with the 3 nm node likely enabling the higher single-thread scores despite lower peak clocks, as evidenced by the Cinebench R23 singlecore result.

Memory support differs as well. The Core i7-14700HX supports DDR4 and DDR5 memory, while the Core Ultra 7 366H supports DDR5 and LPDDR5X. The Core Ultra 7 366H has a recorded memory bandwidth of 115.2 GB/s, while no such figure is listed for the Core i7-14700HX. The Core i7-14700HX supports ECC memory, a feature absent on the Core Ultra 7 366H. PCIe connectivity also differs, with the Core i7-14700HX offering Gen 5 with 16 lanes (CPU only) versus Gen 5 with 12 lanes (CPU only) on the Core Ultra 7 366H. Integrated graphics are different as well: the Core i7-14700HX uses UHD Graphics 770, while the Core Ultra 7 366H uses Intel Xe3 Graphics. The Core i7-14700HX has an unlocked multiplier, but the Core Ultra 7 366H does not. The sockets are incompatible, with the Core i7-14700HX using Intel BGA 1964 and the Core Ultra 7 366H using Intel BGA 2540. The thermal design point also differs, with the Core i7-14700HX rated at 55 W versus 25 W for the Core Ultra 7 366H.

Head-to-Head Benchmarks

The largest single benchmark win for the Intel Core i7-14700HX is in PassMark integer math, where it scores 131296 against 83695 for the Core Ultra 7 366H, a 56.9% advantage. This result underlines the Core i7-14700HX's strength in arithmetic-heavy parallel workloads. Data compression follows with a 33.9% lead, scoring 438539 versus 327455. Cinebench R15 multicore shows a 32.8% advantage, with scores of 3812 and 2870 respectively. Random string sorting delivers a 21.9% win for the Core i7-14700HX, at 48544 versus 39814. PassMark multithread is a 9.4% win, with 36566 against 33429. Cinebench R20 multicore is another win for the Core i7-14700HX, but with a smaller margin of 9.2%, scoring 13059 versus 11960. Cinebench R20 singlecore also goes to the Core i7-14700HX, with a 9.2% edge, scoring 1843 versus 1688. Data encryption is nearly a tie, but the Core i7-14700HX wins by 1%, at 26092 versus 25845.

The Intel Core Ultra 7 366H has its biggest win in Cinebench R23 singlecore, where it scores 4020 versus 2103, a 47.7% lead. Prime number finding is close behind, with a 49.4% advantage, scoring 326 versus 165. Cinebench R15 singlecore shows a 26.9% win, at 405 against 296. Physics simulation is a 21.8% win for the Core Ultra 7 366H, at 2880 versus 2252. Cinebench R23 multicore is a notable win, with the Core Ultra 7 366H scoring 28477 versus 24595, a 13.6% lead, despite having fewer cores. Floating point math goes to the Core Ultra 7 366H by 9.4%, at 103615 versus 93836. Extended instructions deliver a 4.4% win, at 26901 versus 25718. PassMark single-thread is a narrow 2.4% win, with 4043 versus 3947. The same 2.4% margin appears in the duplicate PassMark singlethread test, also at 4043 versus 3947.

The Verdict

The data indicates that the Intel Core i7-14700HX is the appropriate choice for multi-threaded, parallel workloads such as video rendering, data compression, and integer-intensive computation. Its 20 cores and 28 threads, combined with wins in Cinebench R15 multicore, Cinebench R20 multicore, PassMark integer math, and data compression, make it the stronger processor for sustained multi-core tasks. The Core Ultra 7 366H, with its 16 cores and 16 threads, is the better option for single-threaded performance and per-core efficiency. Its dominant wins in Cinebench R23 singlecore, Cinebench R15 singlecore, and prime number finding, along with its higher score in Cinebench R23 multicore, show that it handles workloads that do not scale perfectly across cores more effectively. The Core Ultra 7 366H also carries a lower thermal design point of 25 W versus 55 W, suggesting it fits in cooler, more power-constrained designs. Users prioritizing raw multi-core throughput should select the Core i7-14700HX; users prioritizing single-core responsiveness and efficiency should select the Core Ultra 7 366H.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core i7-14700HX has 20 cores and 28 threads, while the Intel Core Ultra 7 366H has 16 cores and 16 threads.

Q: Which processor wins in Cinebench R23 multicore?

A: The Intel Core Ultra 7 366H wins, scoring 28477 versus 24595 for the Intel Core i7-14700HX, a 13.6% advantage.

Q: What is the single-thread score difference in Cinebench R15?

A: The Intel Core Ultra 7 366H scores 405, while the Intel Core i7-14700HX scores 296, giving the Core Ultra 7 366H a 26.9% lead.

Q: Which processor supports ECC memory?

A: The Intel Core i7-14700HX supports ECC memory, while the Intel Core Ultra 7 366H does not.

Q: What are the thermal design points for each processor?

A: The Intel Core i7-14700HX has a thermal design point of 55 W, and the Intel Core Ultra 7 366H has a thermal design point of 25 W.

Q: Which processor has a higher boost clock?

A: The Intel Core i7-14700HX has a boost clock of 5.50 GHz, which is higher than the 4.80 GHz boost clock of the Intel Core Ultra 7 366H.

Specification Differences

| Specification | Intel Core i7-14700HX | Intel Core Ultra 7 366H |

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

| Cores | 20 | 16 |

| Threads | 28 | 16 |

| Base Clock | 2.10 GHz | 2.00 GHz |

| Boost Clock | 5.50 GHz | 4.80 GHz |

| TDP | 55 W | 25 W |

| Socket | Intel BGA 1964 | Intel BGA 2540 |

| Architecture | Raptor Lake | Panther Lake |

| Process Node | 10 nm | 3 nm |

| L1 Cache | 80 KB (per core) | 192 KB (per core) |

| L2 Cache | 2 MB (per core) | 2.5 MB (per core) |

| L3 Cache | 33 MB (shared) | 18 MB (shared) |

| Memory Support | DDR4, DDR5 | DDR5, LPDDR5X |

| Memory Bandwidth | Not specified | 115.2 GB/s |

| ECC Memory | Yes | No |

| PCIe | Gen 5, 16 Lanes (CPU only) | Gen 5, 12 Lanes (CPU only) |

| Integrated Graphics | UHD Graphics 770 | Intel Xe3 Graphics |

| Multiplier Unlocked | Yes | No |

| Release Date | 2024-01-07 | 2026-01-04 |