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

Intel Core Ultra 7 265 and Intel Core Ultra X7 358H occupy very different positions in the desktop and mobile landscapes, and the benchmark data reflects that split clearly. The desktop part, built on Arrow Lake, delivers overwhelming multi-threaded and most single-threaded wins, while the mobile chip, built on Panther Lake, counters with a notable Cinebench R20 performance and a narrow physics win. The recorded data shows a 14 to 3 win split in favor of the desktop chip, but the specific workloads where the mobile part wins are worth close attention.

Where Each One Wins

The Intel Core Ultra 7 265 dominates the broad majority of tested workloads. It wins every Cinebench R15 and R23 test, plus the entire PassMark suite except for physics. In data compression, it scores 522983 against 332508, a 57.3% advantage. Data encryption shows a 55.3% lead, floating point math is 66.4% ahead, and integer math is 62.1% ahead. The desktop chip also takes multithread at 49682 versus 33802, a 47% margin, and single-thread at 4689 versus 4124, a 13.7% margin. Its extended instructions score of 41478 beats 27274 by 52.1%, and random string sorting is 58.2% ahead.

The Intel Core Ultra X7 358H wins exactly three comparisons. The most striking is Cinebench R20 multicore, where it scores 12011 against 6268, a 47.8% margin in its favor. It also wins Cinebench R20 singlecore by the same 47.8% delta, scoring 1695 against 884. The third win is PassMark physics at 3021 versus 2923, a narrow 3.2% margin. These results indicate the mobile chip has a distinct advantage in the R20 workload, which may reflect different scheduling or instruction handling, but its overall profile is clearly geared toward efficiency rather than raw throughput.

Architecture Differences

The two processors come from different Intel series and foundries. The Intel Core Ultra 7 265 belongs to Core Ultra Series 2, uses the Arrow Lake architecture with the Arrow Lake-S codename, and is fabricated on a 3 nm process at TSMC. It contains 17,800 million transistors on a 243 mm² die. The Intel Core Ultra X7 358H belongs to Core Ultra Series 3, uses the Panther Lake architecture with the Panther Lake-H codename, and is fabricated on a 3 nm process at Intel. Its transistor count and die size are not recorded in the database.

Core and thread counts differ as well. The desktop chip has 20 cores and 20 threads, while the mobile chip has 16 cores and 16 threads. Both use a 192 KB L1 cache per core and a 3 MB L2 cache per core, but the shared L3 cache is 30 MB on the desktop part versus 18 MB on the mobile part. Clock speeds also differ: the 265 has a base clock of 2.40 GHz and a boost clock of 5.30 GHz, while the 358H has a base clock of 1.90 GHz and a boost clock of 4.80 GHz. The desktop chip carries a 65 W TDP, the mobile chip a 25 W TDP.

Memory support separates the two as well. The 265 supports DDR5 memory on a dual-channel bus with 102.4 GB/s bandwidth. The 358H supports LPDDR5X memory on a dual-channel bus with 153.6 GB/s bandwidth, which gives the mobile chip a higher theoretical memory bandwidth despite its lower power envelope. PCIe lanes also differ: the desktop part offers Gen 5 with 20 lanes from the CPU, while the mobile part offers Gen 5 with only 4 lanes. Integrated graphics differ too, with the 265 using Arc Xe-LPG Graphics 32EU and the 358H using Arc B390. Neither supports ECC memory, and neither has an unlocked multiplier.

Head-to-Head Benchmarks

The largest single win for the Intel Core Ultra 7 265 comes in Cinebench R23 singlecore, where it scores 5960 against 2080, a 186.5% delta. That is a massive gap in single-threaded rendering performance. The R23 multicore result is also decisive: 42216 versus 18747, a 125.2% advantage. Cinebench R15 shows the same pattern, with the desktop chip winning multicore 4255 to 3027, a 40.6% margin, and singlecore 600 to 301.5, a 99% margin.

The Intel Core Ultra X7 358H flips the script in Cinebench R20. Its multicore score of 12011 is 47.8% higher than the 265's 6268, and its singlecore score of 1695 is 47.8% higher than 884. This is the only benchmark family where the mobile part wins, and it wins both subtests by the same margin. The PassMark physics test is the other mobile win, 3021 versus 2923, a 3.2% edge that is close enough to be within normal run-to-run variance.

PassMark results otherwise favor the desktop chip heavily. Prime number finding shows a 24% lead, 418 versus 337. Multithread is 47% ahead, and single-thread is 13.7% ahead. The largest PassMark margin is floating point math at 66.4%, followed by integer math at 62.1%. Data compression and random string sorting are both above 57%, and extended instructions and encryption are both above 52%. Across the full head-to-head set, the desktop chip wins 14 of 17 tests.

FAQ

Q: Which processor has the higher boost clock?

A: The Intel Core Ultra 7 265 boosts to 5.30 GHz, while the Intel Core Ultra X7 358H boosts to 4.80 GHz.

Q: How much L3 cache does each processor have?

A: The Intel Core Ultra 7 265 has 30 MB of shared L3 cache. The Intel Core Ultra X7 358H has 18 MB of shared L3 cache.

Q: Which chip wins Cinebench R20 multicore?

A: The Intel Core Ultra X7 358H wins, scoring 12011 against 6268, a 47.8% margin.

Q: What is the memory bandwidth difference?

A: The Intel Core Ultra X7 358H has 153.6 GB/s of memory bandwidth, which is higher than the Intel Core Ultra 7 265's 102.4 GB/s.

Q: How many PCIe lanes does each CPU provide?

A: The Intel Core Ultra 7 265 provides Gen 5 with 20 lanes from the CPU. The Intel Core Ultra X7 358H provides Gen 5 with 4 lanes from the CPU.

Q: Which processor has the higher average benchmark score?

A: The Intel Core Ultra 7 265 has an average benchmark score of 64640, compared to 40967 for the Intel Core Ultra X7 358H.

The Verdict

The data points to a clear use-case split. The Intel Core Ultra 7 265 is the choice for desktop workloads that demand raw throughput, particularly rendering, compression, encryption, and math-heavy tasks. Its 125.2% lead in Cinebench R23 multicore and 186.5% lead in R23 singlecore make it the stronger processor for content creation and heavy computation. It also holds a 13.7% single-thread lead in PassMark, which helps in everyday responsiveness. Its 93rd percentile ranking among all CPUs, versus 87th for the mobile part, confirms its higher overall standing.

The Intel Core Ultra X7 358H is a mobile part with a 25 W TDP, and its strengths are more specialized. Its 47.8% wins in both Cinebench R20 subtests are notable, but they do not carry over to R15 or R23. The physics win is marginal at 3.2%. For a system constrained by power and cooling, the 358H offers competitive performance in specific workloads and a higher memory bandwidth of 153.6 GB/s, which may benefit integrated graphics or memory-bound tasks. The desktop chip remains the better performer in the vast majority of recorded tests.

Specification Differences

| Specification | Intel Core Ultra 7 265 | Intel Core Ultra X7 358H |

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

| Series | Core Ultra Series 2 | Core Ultra Series 3 |

| Cores | 20 | 16 |

| Threads | 20 | 16 |

| Base Clock | 2.40 GHz | 1.90 GHz |

| Boost Clock | 5.30 GHz | 4.80 GHz |

| TDP | 65 W | 25 W |

| Socket | Intel Socket 1851 | Intel BGA 2540 |

| Codename | Arrow Lake-S | Panther Lake-H |

| Process Node | 3 nm (TSMC) | 3 nm (Intel) |

| L3 Cache | 30 MB (shared) | 18 MB (shared) |

| Memory Support | DDR5 | LPDDR5X |

| Memory Bandwidth | 102.4 GB/s | 153.6 GB/s |

| PCIe | Gen 5, 20 Lanes (CPU only) | Gen 5, 4 Lanes (CPU only) |

| Integrated Graphics | Arc Xe-LPG Graphics 32EU | Arc B390 |

| Market Segment | Desktop | Mobile |

| Release Date | 2025-01-06 | 2026-01-04 |

| Launch MSRP | $394 | Not available |

| Transistors | 17,800 million | Not available |

| Die Size | 243 mm² | Not available |