AMD Ryzen AI 9 HX 375 vs Intel Core Ultra 9 285 Comparison

AMD Ryzen AI 9 HX 375 vs Intel Core Ultra 9 285: the database records a one-sided contest. Across all 15 shared benchmark runs, the Intel Core Ultra 9 285 claims every win, with the AMD Ryzen AI 9 HX 375 finishing behind in each measured workload. The two processors occupy different market segments, one mobile and one desktop, and the recorded data reflects that divide in both raw performance and architectural configuration.

Head-to-Head Benchmarks

The Intel Core Ultra 9 285 dominates the shared benchmark suite, with no recorded win for the AMD Ryzen AI 9 HX 375. The largest margin appears in PassMark find prime numbers, where the Intel part scores 459 against 122 for AMD, a delta of -73.4%. Cinebench R23 single-core follows closely: Intel scores 6909, AMD scores 1988, a -71.2% difference. The pattern holds across rendering, encryption, and math workloads.

In Cinebench R23 multi-core, the Intel Core Ultra 9 285 delivers 48945 points versus 21812 for the AMD Ryzen AI 9 HX 375, a -55.4% gap. Cinebench R15 multi-core shows a smaller but still substantial margin: Intel scores 4933, AMD scores 3334, a -32.4% difference. Single-core in Cinebench R15 tells a starker story, with Intel at 696 and AMD at 301, a -56.8% delta.

PassMark integer math shows the closest contest among all recorded tests. Intel scores 164869, AMD scores 121754, a -26.2% gap. PassMark single-thread also narrows relatively, with Intel at 4881 and AMD at 3867, a -20.8% difference. PassMark data compression sits in the middle range: Intel scores 602121, AMD scores 404918, a -32.8% delta. PassMark extended instructions records Intel at 45357 versus AMD at 29269, a -35.5% gap.

The remaining workloads all favor Intel by wide margins. PassMark random string sorting: Intel 73651, AMD 44552, -39.5%. PassMark multithread: Intel 56602, AMD 32916, -41.8%. PassMark physics: Intel 3598, AMD 1819, -49.4%. PassMark data encryption: Intel 46949, AMD 20802, -55.7%. PassMark floating point math: Intel 194988, AMD 75153, -61.5%. The AMD part never comes within 20% of Intel in any recorded test, and its best relative showing is the PassMark single-thread run.

Architecture Differences

The two processors diverge at the foundational level. The AMD Ryzen AI 9 HX 375 uses the Zen 5 architecture on the Strix Point codename, built on a 4 nm process at TSMC. The Intel Core Ultra 9 285 uses the Arrow Lake architecture under the Arrow Lake-S codename, built on a 3 nm process, also at TSMC. The Intel part carries 17,800 million transistors on a 243 mm² die, while the AMD die measures 233 mm² with no transistor count recorded in the database.

Core and thread counts differ sharply. The AMD Ryzen AI 9 HX 375 provides 12 cores and 24 threads, while the Intel Core Ultra 9 285 provides 24 cores and 24 threads. Both have equal thread counts, but Intel doubles the physical core count. Base clocks favor Intel at 2.50 GHz versus 2.00 GHz for AMD, and boost clocks also favor Intel at 5.60 GHz versus 5.10 GHz.

Cache hierarchies show a substantial Intel advantage. AMD allocates 80 KB of L1 per core, 1 MB of L2 per core, and 16 MB of L3. Intel allocates 192 KB of L1 per core, 3 MB of L2 per core, and 36 MB of shared L3. The Intel part also supports ECC memory, which the AMD part does not. Memory bandwidth favors Intel at 102.4 GB/s versus 89.6 GB/s for AMD, though both use dual-channel buses and DDR5-class memory.

PCIe connectivity differs by generation and lane count. AMD provides Gen 4 with 16 CPU-only lanes, while Intel provides Gen 5 with 20 CPU-only lanes. The integrated graphics also differ: AMD uses the Radeon 890M, while Intel uses Arc Xe-LPG Graphics 64EU. Socket types are incompatible, with AMD on Socket FP8 and Intel on Socket 1851. The AMD part targets mobile, the Intel part targets desktop, and the production status for both is Active.

The Verdict

The recorded data gives a clear verdict: the Intel Core Ultra 9 285 outperforms the AMD Ryzen AI 9 HX 375 in every shared benchmark. The Intel part holds a 95th percentile ranking among all CPUs, while the AMD part sits at the 89th percentile. The average benchmark score for Intel is 75488, versus 46030 for AMD, a difference that aligns with the head-to-head deltas.

The Intel Core Ultra 9 285 also has a higher launch MSRP of $579. The AMD Ryzen AI 9 HX 375 has no recorded launch MSRP in the database. The market positioning explains part of the performance gap: Intel targets desktop with a 65 TDP, AMD targets mobile with a 28 TDP. The power envelope difference alone, 65 versus 28, suggests the Intel part operates with more thermal headroom, though the database does not record direct power consumption measurements.

For users prioritizing raw throughput, the Intel part wins on every metric the database tracks. For users constrained to a mobile platform, the AMD part is the only option in this comparison, but its recorded scores trail Intel across the board. The nearest rivals for each part reinforce the gap: AMD sits within 0.2% of the Intel Core Ultra 5 235, the AMD EPYC 4364P, the Intel Core i9-13900HX, and the AMD EPYC 7303. Intel sits within 0.3% of the AMD EPYC 8224P, the AMD EPYC 4545P, the AMD Ryzen 7 PRO 9755X3D, and the AMD Ryzen 7 PRO 9755.

Specification Differences

| Field | AMD Ryzen AI 9 HX 375 | Intel Core Ultra 9 285 |

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

| Cores | 12 | 24 |

| Threads | 24 | 24 |

| Base clock | 2.00 GHz | 2.50 GHz |

| Boost clock | 5.10 GHz | 5.60 GHz |

| TDP | 28 | 65 |

| Socket | AMD Socket FP8 | Intel Socket 1851 |

| Architecture | Zen 5 | Arrow Lake |

| Codename | Strix Point | Arrow Lake-S |

| Generation | Ryzen AI 300 (Zen 5 / Zen 5c) | Ultra 9 (Arrow Lake) |

| Process node | 4 nm | 3 nm |

| Die size | 233 mm² | 243 mm² |

| Transistors | not recorded | 17,800 million |

| L1 cache | 80 KB per core | 192 KB per core |

| L2 cache | 1 MB per core | 3 MB per core |

| L3 cache | 16 MB | 36 MB shared |

| Memory support | DDR5, LPDDR5X | DDR5 |

| Memory bus | Dual-channel | Dual-channel |

| Memory bandwidth | 89.6 GB/s | 102.4 GB/s |

| ECC memory | false | true |

| PCIe | Gen 4, 16 lanes | Gen 5, 20 lanes |

| Integrated graphics | Radeon 890M | Arc Xe-LPG Graphics 64EU |

| Market segment | Mobile | Desktop |

| Release date | 2024-06-30 | 2024-12-31 |

| Launch MSRP | not recorded | $579 |

FAQ

Q: Which processor wins in multi-core rendering?

A: The Intel Core Ultra 9 285 wins in Cinebench R23 multi-core with 48945 points, against 21812 for the AMD Ryzen AI 9 HX 375, a -55.4% delta. Cinebench R15 multi-core also goes to Intel with 4933 versus 3334.

Q: How large is the single-core gap?

A: The largest single-core gap appears in Cinebench R23, where Intel scores 6909 and AMD scores 1988, a -71.2% difference. PassMark single-thread shows a smaller gap: Intel 4881, AMD 3867, -20.8%.

Q: Do the two processors have the same number of threads?

A: Yes, both have 24 threads. The AMD part uses 12 cores, the Intel part uses 24 cores.

Q: Which processor supports ECC memory?

A: The Intel Core Ultra 9 285 supports ECC memory. The AMD Ryzen AI 9 HX 375 does not.

Q: What is the process node difference?

A: The AMD Ryzen AI 9 HX 375 uses a 4 nm process, while the Intel Core Ultra 9 285 uses a 3 nm process. Both are fabricated by TSMC.

Q: Which part has more L3 cache?

A: The Intel Core Ultra 9 285 has 36 MB of shared L3 cache. The AMD Ryzen AI 9 HX 375 has 16 MB of L3.

Where Each One Wins

The Intel Core Ultra 9 285 wins every recorded benchmark against the AMD Ryzen AI 9 HX 375. The closest contest is PassMark single-thread, where Intel leads by 20.8%. The widest margin is PassMark find prime numbers, where Intel leads by 73.4%. For workloads that stress integer math, data compression, encryption, or floating-point calculations, the Intel part delivers higher scores in the database.

The AMD Ryzen AI 9 HX 375 has no recorded benchmark wins. Its advantages are positional rather than performance-based: it targets the mobile segment with a 28 TDP, uses a smaller 233 mm² die, and supports LPDDR5X memory. The Intel part targets desktop with a 65 TDP, uses a 243 mm² die, and supports only DDR5. The AMD part releases earlier, with a June 2024 date versus December 2024 for Intel.

For users constrained to a mobile platform, the AMD Ryzen AI 9 HX 375 is the only option in this comparison, and its scores place it at the 89th percentile. For users on a desktop platform, the Intel Core Ultra 9 285 delivers the higher recorded performance, the 95th percentile ranking, and the larger cache pool. The data does not show any workload category where the AMD part closes the gap to Intel, so the use-case split follows the market segment: mobile versus desktop, with Intel holding the performance lead in every measured category.