Intel Core i7-14650HX vs Intel Core Ultra 7 366H Comparison

Intel Core i7-14650HX and Intel Core Ultra 7 366H are both 16-core mobile processors, but they represent opposite ends of Intel’s design philosophy. The i7-14650HX is a high-power Raptor Lake part built for maximum multi-threaded throughput, while the Ultra 7 366H is a power-efficient Panther Lake chip with a massive single-core advantage. Benchmark data shows the Ultra 7 wins 12 of 17 head-to-head tests, yet the i7-14650HX takes decisive victories in integer math and data compression, making the choice highly workload-dependent.

FAQ

Q: Which CPU has the higher multi-core benchmark score?

A: The Intel Core Ultra 7 366H leads in Cinebench R23 multi-core with 28477 points versus 20454 for the i7-14650HX, a 28.2% advantage. However, the i7-14650HX wins Cinebench R15 multi-core with 3470.5 points against 2870, a 20.9% lead.

Q: How do single-core scores compare?

A: The Ultra 7 366H dominates single-core performance. It scores 4020 in Cinebench R23 single-core versus 1969 for the i7-14650HX, a 51% gap. The Ultra 7 also leads in Cinebench R15 single-core with 405 versus 285.5 (-29.5% for the i7).

Q: Which processor has better memory bandwidth?

A: The Ultra 7 366H has a rated memory bandwidth of 115.2 GB/s, while the i7-14650HX has no published bandwidth figure in the data. The Ultra 7 supports DDR5 and LPDDR5X, while the i7 supports DDR4 and DDR5.

Q: What are the TDP differences?

A: The i7-14650HX has a TDP of 55 watts, while the Ultra 7 366H has a TDP of 25 watts. This 30-watt difference explains the Ultra 7’s suitability for thinner laptops, though it also limits sustained multi-core performance.

Q: Are these CPUs unlocked for overclocking?

A: Yes, the i7-14650HX has an unlocked multiplier. The Ultra 7 366H does not, meaning it cannot be overclocked via multiplier adjustment.

Q: Which CPU has the larger L3 cache?

A: The i7-14650HX has 30 MB of shared L3 cache, while the Ultra 7 366H has 18 MB. The Ultra 7 compensates with larger per-core L1 (192 KB vs 80 KB) and L2 (2.5 MB vs 2 MB) caches.

Architecture Differences

The two chips come from entirely different process nodes and architectural lineages. The i7-14650HX uses Raptor Lake-HX on Intel’s 10 nm process, while the Ultra 7 366H uses Panther Lake on a 3 nm node. This process gap is visible in the power envelope: 55 watts versus 25 watts TDP. The i7-14650HX sports 16 cores and 24 threads (likely 8 performance cores with hyper-threading), while the Ultra 7 366H has 16 cores and 16 threads, indicating no hyper-threading on any of its cores.

Cache hierarchies differ substantially. The i7-14650HX allocates 80 KB L1 and 2 MB L2 per core, with 30 MB shared L3. The Ultra 7 366H uses 192 KB L1 and 2.5 MB L2 per core, but only 18 MB shared L3. The Ultra 7’s larger per-core caches help its single-thread performance, while the i7’s larger L3 aids multi-threaded workloads with shared data.

Memory support splits generations: the i7 supports DDR4 and DDR5, while the Ultra 7 supports DDR5 and LPDDR5X. The Ultra 7 has a rated 115.2 GB/s memory bandwidth, whereas the i7 has no listed bandwidth. PCIe lanes differ too: the i7 offers Gen 5 with 16 CPU lanes, while the Ultra 7 provides Gen 5 with 12 CPU lanes. Integrated graphics also differ: UHD Graphics 710 on the i7 versus Xe3 Graphics on the Ultra 7. The i7 uses socket BGA 1964, while the Ultra 7 uses BGA 2540.

Head-to-Head Benchmarks

The Cinebench suite presents a split picture. In Cinebench R15 multi-core, the i7-14650HX wins decisively with 3470.5 versus 2870, a 20.9% lead. But in Cinebench R23 multi-core, the Ultra 7 366H reverses the result with 28477 versus 20454, a 28.2% margin. Cinebench R20 multi-core is essentially a tie: 11946 for the i7 and 11960 for the Ultra 7, a 0.1% difference. This pattern suggests the i7 excels in shorter multi-core bursts, while the Ultra 7 sustains better performance over longer renders.

Single-core is not close. The Ultra 7 wins Cinebench R23 single-core by 51% (4020 vs 1969) and Cinebench R15 single-core by 29.5% (405 vs 285.5). Even in Cinebench R20 single-core, the Ultra 7 edges ahead with 1688 versus 1686. PassMark single-thread scores confirm the trend: 4043 for the Ultra 7 versus 3841 for the i7, a 5% gap.

Integer-heavy workloads favor the i7-14650HX dramatically. PassMark integer math shows the i7 at 116661 versus 83695 for the Ultra 7, a 39.4% advantage. Data compression also goes to the i7: 398418 versus 327455, a 21.7% lead. Random string sorting is another i7 win at 43035 versus 39814, an 8.1% margin. PassMark multithread is nearly even: 33495 for the i7 versus 33429 for the Ultra 7, a 0.2% edge.

The Ultra 7 366H dominates other PassMark subtests. Floating-point math goes to the Ultra 7 at 103615 versus 84999, an 18% lead. Find prime numbers shows a massive 53.4% advantage for the Ultra 7 (326 vs 152). Physics simulation favors the Ultra 7 at 2880 versus 2202, a 23.5% margin. Data encryption goes to the Ultra 7 at 25845 versus 22917, an 11.3% lead. Extended instructions also favor the Ultra 7: 26901 versus 24150, a 10.2% gap.

Specification Differences

The core counts are identical at 16, but threading diverges: the i7-14650HX has 24 threads, while the Ultra 7 366H has 16. Base clocks differ slightly: 2.20 GHz for the i7 versus 2.00 GHz for the Ultra 7. Boost clocks show a larger gap: 5.20 GHz for the i7 versus 4.80 GHz for the Ultra 7. Despite lower clocks, the Ultra 7 wins single-core tests, indicating superior IPC from the Panther Lake architecture.

TDP is a major separator: 55 watts for the i7 versus 25 watts for the Ultra 7. Socket compatibility differs (BGA 1964 vs BGA 2540), meaning no cross-compatibility. Process nodes are generations apart: 10 nm for the i7 versus 3 nm for the Ultra 7. Cache configurations differ as detailed above: larger L3 on the i7, larger L1/L2 on the Ultra 7. Memory support: the i7 accepts DDR4 and DDR5, while the Ultra 7 uses DDR5 and LPDDR5X. The Ultra 7 has a published 115.2 GB/s memory bandwidth; the i7 has none listed. ECC memory is supported on the i7 but not the Ultra 7. PCIe lanes: 16 Gen 5 lanes on the i7 versus 12 Gen 5 lanes on the Ultra 7. The i7 has an unlocked multiplier; the Ultra 7 is locked. Integrated graphics differ: UHD Graphics 710 versus Xe3 Graphics. Release dates also differ: January 2024 for the i7 versus January 2026 for the Ultra 7.

The Verdict

The data points to two distinct user profiles. The Intel Core i7-14650HX is the pick for integer-heavy parallel workloads. Its 39.4% lead in PassMark integer math and 21.7% lead in data compression show clear strength in calculations and file operations. The 16 Gen 5 PCIe lanes and ECC support also make it more suitable for workstation-class tasks where data integrity and expansion matter. The 30 MB L3 cache and unlocked multiplier give headroom for tweaking, though the 55-watt TDP demands robust cooling.

The Intel Core Ultra 7 366H is the superior choice for general productivity and single-threaded responsiveness. Its 51% lead in Cinebench R23 single-core and 53.4% lead in find prime numbers indicate exceptional per-core efficiency. The 3 nm process and 25-watt TDP make it ideal for thin-and-light laptops without sacrificing daily performance. The 115.2 GB/s memory bandwidth and LPDDR5X support further enhance memory-intensive tasks. The Xe3 Graphics is also a generational leap over UHD Graphics 710, though no gaming benchmarks are provided.

Neither chip is a universal winner. The i7-14650HX wins 5 head-to-head tests; the Ultra 7 wins 12. The i7’s wins are concentrated in multi-threaded and integer workloads, while the Ultra 7 sweeps single-thread, floating-point, and cryptographic tests. The Ultra 7 also holds a slight edge in average benchmark score: 41263 versus 41576 for the i7, a difference of less than 1%. Both sit at similar percentile rankings (87th for the Ultra 7, 88th for the i7), meaning they compete in the same performance tier despite their architectural differences.

Where Each One Wins

Intel Core i7-14650HX wins in:

• Cinebench R15 multi-core (20.9% faster)
• PassMark data compression (21.7% faster)
• PassMark integer math (39.4% faster)
• PassMark random string sorting (8.1% faster)
• PassMark multithread (0.2% faster)
• ECC memory support and 16 PCIe Gen 5 lanes for workstation expansion

Intel Core Ultra 7 366H wins in:

• Cinebench R23 multi-core (28.2% faster)
• Cinebench R15 single-core (29.5% faster)
• Cinebench R23 single-core (51.0% faster)
• PassMark data encryption (11.3% faster)
• PassMark extended instructions (10.2% faster)
• PassMark find prime numbers (53.4% faster)
• PassMark floating-point math (18.0% faster)
• PassMark physics (23.5% faster)
• PassMark single-thread (5.0% faster)
• 115.2 GB/s memory bandwidth and LPDDR5X support

For a laptop meant for video editing, physics simulations, or cryptographic workloads, the Ultra 7 366H is the obvious choice. For software compilation, database operations, or any task that scales with integer math and thread count, the i7-14650HX delivers more raw throughput. Battery life and thermals also decisively favor the Ultra 7 given its 25-watt TDP, but the i7’s higher boost clock and 24 threads give it a niche in sustained multi-core workloads where power draw is not a constraint.