Intel Core i7-14650HX vs Intel Core Ultra X7 358H Comparison

The Intel Core i7-14650HX and the Intel Core Ultra X7 358H represent two distinct philosophies for mobile computing, split between a high-power, multi-threaded workhorse and a modern, efficient architecture with superior single-core finesse. The benchmark data indicates a clear division of labor: the i7-14650HX dominates in heavy integer and compression workloads, while the Ultra X7 358H sweeps the majority of single-core, encryption, and floating-point tests. The data reveals a 17-test head-to-head where the Ultra X7 358H secures 12 wins against the i7-14650HX's 5, yet the margins on the i7-14650HX's victories are often massive, suggesting a choice hinges entirely on the specific application.

Where Each One Wins

The Intel Core i7-14650HX is the undisputed champion of traditional parallel processing, particularly when the workload involves large, simple data sets. Its most striking victory is in PassMark integer math, where it scores 116661 against the Ultra X7 358H's 83147, a staggering 40.3% lead. This is complemented by a 19.8% advantage in data compression (398418 vs 332508) and a 6.6% win in random string sorting (43035 vs 40357). In the Cinebench suite, it shows its strength in multi-core rendering, posting a 14.7% higher score in R15 multi-core (3470.5 vs 3027) and a 9.1% higher score in R23 multi-core (20454 vs 18747). This processor is built for sustained, heavy lifting where thread count and raw throughput are paramount.

Conversely, the Intel Core Ultra X7 358H wins decisively in single-core performance and specialized instruction sets. It leads by 5.3% in both Cinebench R23 single-core (2080 vs 1969) and R15 single-core (301.5 vs 285.5). The most dramatic difference is in PassMark find prime numbers, where it scores 337 versus the i7-14650HX's 152, a massive 54.9% advantage that indicates a far more efficient per-core execution engine. It also wins in floating-point math by 18.1% (103842 vs 84999) and in extended instructions by 11.5% (27274 vs 24150). Furthermore, it takes the win in data encryption (26046 vs 22917, a 12% lead) and physics simulation (3021 vs 2202, a 27.1% lead). The Ultra X7 358H is the choice for responsive, single-threaded applications, scientific calculations, and security-related tasks.

Architecture Differences

The two processors are built on fundamentally different foundations. The Intel Core i7-14650HX is a product of the Raptor Lake-HX Refresh generation, manufactured on Intel's 10 nm process node. It features a larger 257 mm² die size and a substantial 30 MB of shared L3 cache. Its core configuration is 16 cores and 24 threads, supporting DDR4 and DDR5 memory. It also includes ECC memory support and an unlocked multiplier, catering to enthusiasts and professionals who need flexibility.

In contrast, the Intel Core Ultra X7 358H is a Panther Lake-H part from the Core Ultra Series 3, built on a far more advanced 3 nm process node. Despite having the same 16-core count, it only supports 16 threads, indicating a different core topology without Hyper-Threading. Its cache layout is distinct, featuring a larger 192 KB L1 and 3 MB L2 per core, but a smaller 18 MB shared L3 cache. It exclusively supports LPDDR5X memory with a high bandwidth of 153.6 GB/s, and notably does not support ECC. The Ultra X7 358H is a locked multiplier part with a different socket (Intel BGA 2540 vs Intel BGA 1964) and significantly fewer PCIe lanes (4 vs 16). Its integrated graphics is the Arc B390, whereas the i7-14650HX has the more basic UHD Graphics 710.

FAQ

Q: Which processor has a higher average benchmark score?

A: The Intel Core i7-14650HX has a slightly higher average benchmark score of 41576, placing it in the 88th percentile, while the Intel Core Ultra X7 358H has an average score of 40967, placing it in the 87th percentile.

Q: Is the Intel Core Ultra X7 358H always faster than the i7-14650HX in multi-core tests?

A: No. The data is mixed. The i7-14650HX wins Cinebench R15 and R23 multi-core tests by 14.7% and 9.1% respectively, but the Ultra X7 358H wins Cinebench R20 multi-core by a slim 0.5% margin (12011 vs 11946).

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

A: The Intel Core Ultra X7 358H is consistently faster. It leads by 5.3% in both Cinebench R15 and R23 single-core tests, and by 6.9% in the PassMark single-thread test (4124 vs 3841).

Q: Which processor has better memory bandwidth specifications?

A: The Intel Core Ultra X7 358H has a specified memory bandwidth of 153.6 GB/s, a figure not provided for the Intel Core i7-14650HX. The i7-14650HX supports both DDR4 and DDR5, while the Ultra X7 358H supports only LPDDR5X.

Q: What is the difference in their process technology?

A: The Intel Core i7-14650HX is manufactured on a 10 nm process node, while the Intel Core Ultra X7 358H is built on a more advanced 3 nm process node.

Q: Which processor has more threads for parallel workloads?

A: The Intel Core i7-14650HX has 24 threads, significantly more than the Intel Core Ultra X7 358H's 16 threads, despite both having 16 cores.

Specification Differences

The core specifications reveal clear generational and design splits:

• Process Node: 10 nm (i7-14650HX) vs 3 nm (Ultra X7 358H)
• Threads: 24 (i7-14650HX) vs 16 (Ultra X7 358H)
• Base Clock: 2.20 GHz (i7-14650HX) vs 1.90 GHz (Ultra X7 358H)
• Boost Clock: 5.20 GHz (i7-14650HX) vs 4.80 GHz (Ultra X7 358H)
• TDP: 55 W (i7-14650HX) vs 25 W (Ultra X7 358H)
• Die Size: 257 mm² (i7-14650HX) vs not specified (Ultra X7 358H)
• L1 Cache: 80 KB (per core) (i7-14650HX) vs 192 KB (per core) (Ultra X7 358H)
• L2 Cache: 2 MB (per core) (i7-14650HX) vs 3 MB (per core) (Ultra X7 358H)
• L3 Cache: 30 MB (shared) (i7-14650HX) vs 18 MB (shared) (Ultra X7 358H)
• Memory Support: DDR4, DDR5 (i7-14650HX) vs LPDDR5X (Ultra X7 358H)
• Memory Bandwidth: Not specified (i7-14650HX) vs 153.6 GB/s (Ultra X7 358H)
• ECC Memory: Supported (i7-14650HX) vs Not supported (Ultra X7 358H)
• PCIe Lanes: 16 Lanes (CPU only) (i7-14650HX) vs 4 Lanes (CPU only) (Ultra X7 358H)
• Socket: Intel BGA 1964 (i7-14650HX) vs Intel BGA 2540 (Ultra X7 358H)
• Integrated Graphics: UHD Graphics 710 (i7-14650HX) vs Arc B390 (Ultra X7 358H)
• Multiplier Unlocked: Yes (i7-14650HX) vs No (Ultra X7 358H)

Head-to-Head Benchmarks

The most decisive wins for the Intel Core i7-14650HX are its massive 40.3% lead in PassMark integer math (116661 vs 83147) and its 19.8% lead in data compression (398418 vs 332508). These are not marginal gains; they represent a fundamental advantage in tasks that rely on raw integer throughput and memory bandwidth for large data blocks. Its 14.7% win in Cinebench R15 multi-core (3470.5 vs 3027) and 9.1% win in R23 multi-core (20454 vs 18747) further cement its position for rendering workloads, though the R20 multi-core test tells a different story with the Ultra X7 358H winning by a hair (12011 vs 11946, a 0.5% delta).

The Intel Core Ultra X7 358H's victories are defined by efficiency and per-core strength. Its biggest win is a 54.9% lead in PassMark find prime numbers (337 vs 152), a test that is highly sensitive to architectural efficiency and clock speed. It also shows a substantial 27.1% lead in PassMark physics (3021 vs 2202) and an 18.1% lead in floating-point math (103842 vs 84999). The consistent 5.3% lead in Cinebench R15 and R23 single-core tests (301.5 vs 285.5; 2080 vs 1969) indicates that for most everyday applications and lightly-threaded tasks, the Ultra X7 358H will feel snappier and more responsive. Its wins in data encryption (26046 vs 22917) and extended instructions (27274 vs 24150) point to superior modern instruction set handling.

The Verdict

The data presents a clear, if bifurcated, recommendation. For users who prioritize multi-threaded content creation, heavy data compression, or any workload that can utilize more than 16 threads, the Intel Core i7-14650HX is the unequivocal choice. Its 40.3% lead in integer math and 19.8% lead in data compression are decisive, and its higher thread count (24 vs 16) and larger 30 MB L3 cache provide the resources needed for sustained heavy loads. It is the high-performance part for demanding professional applications, despite its higher 55 W TDP.

Conversely, the Intel Core Ultra X7 358H is the better choice for users who value efficiency, single-core responsiveness, and modern feature sets. Its 54.9% lead in prime number calculation and 27.1% lead in physics simulation indicate a far more capable per-core architecture that will excel in gaming, everyday productivity, and scientific computing. Its lower 25 W TDP and 3 nm process suggest significantly better power efficiency for mobile devices. While it loses the multi-core Cinebench battles, its narrow 0.5% win in R20 multi-core shows it is no slouch. Ultimately, the choice is between the i7-14650HX's raw multi-threaded power and the Ultra X7 358H's superior single-core performance and architectural efficiency.