Intel Core Ultra 7 265H vs Intel Core Ultra X7 358H Comparison

The Intel Core Ultra 7 265H and Intel Core Ultra X7 358H are 16-core mobile processors from successive Intel generations, and the benchmark data reveals a surprisingly close contest. The 265H, built on Arrow Lake, wins the majority of tests, but the 358H, built on Panther Lake, secures decisive victories in specific workloads. The data shows a clear split: the 265H leads in overall compute throughput, while the 358H counters with wins in physics and compression tasks.

Head-to-Head Benchmarks

The most decisive victory for the Intel Core Ultra 7 265H comes in the PassMark physics test, where the 358H wins by a massive 17.3% margin, scoring 3021 against the 265H's 2497. This is the single largest delta between the two chips in either direction. The 358H also wins in PassMark extended instructions (27274 vs 26805, a 1.7% lead), data encryption (26046 vs 26005, a 0.2% edge), and prime number finding (337 vs 335, a 0.6% advantage). These wins, while smaller, show the Panther Lake chip has specific strengths in instruction-level parallelism and cryptographic workloads.

The Intel Core Ultra 7 265H dominates the Cinebench suite, with its largest win in Cinebench R23 multicore, where it scores 19940 against the 358H's 18747, a 6.4% advantage. The 265H also leads in Cinebench R20 multicore (12131 vs 12011, a 1% edge) and Cinebench R15 singlecore (307 vs 301.5, a 1.8% lead). In Cinebench R23 singlecore, the two chips are perfectly tied at 2080 each, with a 0% delta. The 265H's PassMark wins are equally consistent: it takes single-threaded performance by 5.1% (4334 vs 4124), floating-point math by 5.1% (109123 vs 103842), and integer math by 2.8% (85479 vs 83147).

Looking at the overall win count, the 265H takes 12 of the 17 head-to-head tests, while the 358H wins 5. The average benchmark score reinforces this: the 265H averages 41621, placing it in the 88th percentile of all CPUs, while the 358H averages 40967, sitting in the 87th percentile. The 265H's nearest rival is the Intel Core 7 251TE, which is just 0.1% behind, while the 358H's closest competitor is the Intel Core Ultra 7 366H, which leads it by 0.7%. The 358H also trails the AMD Ryzen AI 5 PRO 440 by 0.6% and the AMD Ryzen AI 5 PRO 435G by 0.6%, showing it sits in a competitive mid-range bracket.

The Verdict

The data points to the Intel Core Ultra 7 265H as the stronger overall processor. It wins the majority of benchmarks, including the most demanding multicore render test (Cinebench R23) by 6.4%, and it holds a 654-point advantage in average benchmark score (41621 vs 40967). For users whose workloads involve rendering, floating-point math, or general single-threaded responsiveness, the 265H is the clear choice. The 5.1% lead in PassMark single-thread performance (4334 vs 4124) and the 5.1% lead in floating-point math (109123 vs 103842) are substantial margins that translate to smoother everyday use and faster compute-heavy tasks.

However, the Intel Core Ultra X7 358H is not without its merits. Its 17.3% win in PassMark physics (3021 vs 2497) is a significant outlier, suggesting it has superior performance in physics simulation workloads, which could matter for certain engineering or scientific applications. The 358H also wins in extended instructions (27274 vs 26805) and data encryption (26046 vs 26005), making it a better fit for security-focused tasks or code that leverages AVX-512-style instruction sets. The 358H's lower TDP of 25W, compared to the 265H's 28W, also suggests better efficiency per watt, though the benchmark data does not directly measure power consumption.

The verdict is nuanced: the 265H is the better all-rounder and the safer pick for most users, but the 358H has a distinct niche in physics-heavy and cryptographic workloads. The 358H's 87th percentile ranking, just one point below the 265H's 88th, underscores how close these two chips are overall.

Architecture Differences

The two processors come from different Intel generations and foundries. The Intel Core Ultra 7 265H is built on the Arrow Lake architecture, specifically the Arrow Lake-H codename, and is manufactured on a 3 nm process by TSMC. The Intel Core Ultra X7 358H uses the Panther Lake codename, also on a 3 nm process, but is manufactured by Intel's own foundry. Both chips feature 16 cores and 16 threads, matching core and thread counts exactly.

Cache configurations differ notably. The 265H has 24 MB of shared L3 cache, while the 358H has 18 MB. Both share the same L1 cache of 192 KB per core and L2 cache of 3 MB per core. The larger L3 cache on the 265H likely contributes to its multicore and floating-point wins. Memory support also diverges: the 265H supports both DDR5 and LPDDR5X, while the 358H supports only LPDDR5X. The 358H compensates with higher memory bandwidth at 153.6 GB/s, compared to the 265H's 102.4 GB/s, a 50% advantage in theoretical memory throughput.

The integrated graphics differ as well. The 265H pairs with Arc Graphics 140T, while the 358H uses Arc B390, a newer generation GPU. The 358H also has fewer PCIe lanes, with 4 lanes versus the 265H's 8 lanes (both Gen 5, CPU only). The 265H supports ECC memory, while the 358H does not. Clock speeds favor the 265H, which has a base clock of 2.20 GHz and a boost clock of 5.30 GHz, versus the 358H's 1.90 GHz base and 4.80 GHz boost. The sockets differ too: the 265H uses Intel BGA 2049, while the 358H uses Intel BGA 2540, meaning they are not interchangeable in motherboards.

FAQ

Q: Which processor has the higher boost clock?

A: The Intel Core Ultra 7 265H has a boost clock of 5.30 GHz, while the Intel Core Ultra X7 358H tops out at 4.80 GHz.

Q: Do both processors have the same core count?

A: Yes, both the Intel Core Ultra 7 265H and the Intel Core Ultra X7 358H have 16 cores and 16 threads.

Q: Which chip has more L3 cache?

A: The Intel Core Ultra 7 265H has 24 MB of shared L3 cache, compared to 18 MB on the Intel Core Ultra X7 358H.

Q: What is the memory bandwidth difference?

A: The Intel Core Ultra X7 358H has a memory bandwidth of 153.6 GB/s, while the Intel Core Ultra 7 265H has 102.4 GB/s.

Q: Which processor supports ECC memory?

A: The Intel Core Ultra 7 265H supports ECC memory, while the Intel Core Ultra X7 358H does not.

Q: Who manufactures the silicon for each chip?

A: The Intel Core Ultra 7 265H is made by TSMC, while the Intel Core Ultra X7 358H is made by Intel.

Where Each One Wins

The Intel Core Ultra 7 265H is the winner for CPU-bound productivity tasks. It leads in Cinebench R23 multicore by 6.4% (19940 vs 18747), Cinebench R20 multicore by 1% (12131 vs 12011), and PassMark multithread by 0.7% (34027 vs 33802). Its single-threaded dominance is clear: a 5.1% lead in PassMark single-thread (4334 vs 4124) and a 1.8% lead in Cinebench R15 singlecore (307 vs 301.5). For floating-point and integer math, the 265H wins by 5.1% and 2.8% respectively, making it the better choice for scientific computing, data analysis, and any workload that relies heavily on arithmetic calculations. Its 12 wins overall, including data compression (334711 vs 332508) and random string sorting (40742 vs 40357), make it the versatile pick.

The Intel Core Ultra X7 358H has a narrower but distinct set of advantages. Its 17.3% victory in PassMark physics (3021 vs 2497) is the standout, making it the preferred option for physics simulation, game physics, or any physics-based modeling workload. The 358H also wins in extended instructions (27274 vs 26805), data encryption (26046 vs 26005), and prime number finding (337 vs 335), indicating strengths in cryptography, signal processing, and specialized SIMD operations. For users who prioritize these specific tasks over general compute, the 358H is the better fit, despite its lower overall average score. Its higher memory bandwidth (153.6 GB/s vs 102.4 GB/s) also suggests it could handle memory-bandwidth-bound tasks more efficiently, even if the benchmark data does not directly show this.