AMD Ryzen AI 9 HX 375 vs Intel Core Ultra 7 265K Comparison

Where Each One Wins

The benchmark data presents a decisive split between these two processors. The Intel Core Ultra 7 265K wins all 17 recorded head-to-head comparisons, while the AMD Ryzen AI 9 HX 375 records zero wins. This does not make the AMD part a poor performer, but it establishes the Intel chip as the clear performance leader across every measured workload category.

The AMD Ryzen AI 9 HX 375 is a mobile processor with a 28 W TDP, designed for laptops and compact systems. Its strength lies in efficiency and integration, not raw throughput. The Intel Core Ultra 7 265K is a desktop part with a 125 W TDP, targeting high-performance desktop builds where power delivery and cooling are less constrained. The data reflects this positioning: the desktop chip dominates in multicore, single-core, and specialized instruction workloads.

For users prioritizing maximum compute performance in a desktop environment, the Intel part is the obvious choice. For mobile users who need capable processing within a tight power envelope, the AMD chip serves a different purpose. The benchmark results do not indicate failure on AMD's part; they indicate two different design philosophies serving two different market segments.

Architecture Differences

The two processors diverge fundamentally in their architectural approach. The AMD Ryzen AI 9 HX 375 uses the Zen 5 architecture, codenamed Strix Point, built on a 4 nm process at TSMC. It features 12 cores and 24 threads, leveraging simultaneous multithreading to double thread count. The cache hierarchy includes 80 KB of L1 per core, 1 MB of L2 per core, and 16 MB of shared L3 cache. The die measures 233 mm², and the chip fits into AMD Socket FP8.

The Intel Core Ultra 7 265K belongs to the Arrow Lake-S family, using the Arrow Lake architecture on a 3 nm TSMC node. It packs 20 cores and 20 threads, with no hyperthreading. Each core carries 192 KB of L1, 3 MB of L2, and the chip has 30 MB of shared L3 cache. The die spans 243 mm² and contains 17,800 million transistors. It uses Intel Socket 1851.

Memory support differs as well. The AMD chip accepts both DDR5 and LPDDR5X with dual-channel access and a memory bandwidth of 89.6 GB/s. The Intel chip supports DDR5 only, also dual-channel, but with a higher memory bandwidth of 102.4 GB/s. The Intel part supports ECC memory, while the AMD chip does not. PCIe connectivity also differs: AMD offers Gen 4 with 16 lanes, while Intel provides Gen 5 with 20 lanes.

Integrated graphics separate them further. The AMD chip uses the Radeon 890M, while the Intel chip integrates Arc Xe-LPG Graphics with 64 execution units. The Intel part has an unlocked multiplier, enabling overclocking; the AMD part does not. Both chips share the same foundry, TSMC, but on different process nodes: 4 nm for AMD, 3 nm for Intel.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core Ultra 7 265K has 20 cores and 20 threads. The AMD Ryzen AI 9 HX 375 has 12 cores and 24 threads. Intel offers more physical cores, while AMD uses simultaneous multithreading to reach a higher thread count from fewer cores.

Q: What is the single-core performance difference in Cinebench R23?

A: The Intel Core Ultra 7 265K scores 2020 in Cinebench R23 single-core, while the AMD Ryzen AI 9 HX 375 scores 1988. The delta is 1.6% in Intel's favor, making this the closest head-to-head result in the entire benchmark set.

Q: How do the two chips compare in memory bandwidth?

A: The Intel Core Ultra 7 265K delivers 102.4 GB/s of memory bandwidth, while the AMD Ryzen AI 9 HX 375 delivers 89.6 GB/s. Both use dual-channel memory buses, but Intel supports DDR5 at a higher bandwidth figure.

Q: Do both processors support ECC memory?

A: No. The Intel Core Ultra 7 265K supports ECC memory, while the AMD Ryzen AI 9 HX 375 does not.

Q: Which processor has a higher boost clock?

A: The Intel Core Ultra 7 265K boosts to 5.50 GHz, while the AMD Ryzen AI 9 HX 375 boosts to 5.10 GHz. Intel also has a higher base clock at 3.90 GHz versus AMD's 2.00 GHz.

Q: What is the largest performance gap between the two in any benchmark?

A: The largest gap appears in PassMark find prime numbers, where Intel scores 491 versus AMD's 122, a 75.2% difference in Intel's favor.

Specification Differences

| Specification | AMD Ryzen AI 9 HX 375 | Intel Core Ultra 7 265K |

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

| Cores | 12 | 20 |

| Threads | 24 | 20 |

| Base Clock | 2.00 GHz | 3.90 GHz |

| Boost Clock | 5.10 GHz | 5.50 GHz |

| TDP | 28 W | 125 W |

| Socket | AMD Socket FP8 | Intel Socket 1851 |

| Architecture | Zen 5 | Arrow Lake |

| Codename | Strix Point | Arrow Lake-S |

| Process Node | 4 nm | 3 nm |

| Transistors | Not specified | 17,800 million |

| Die Size | 233 mm² | 243 mm² |

| L1 Cache | 80 KB per core | 192 KB per core |

| L2 Cache | 1 MB per core | 3 MB per core |

| L3 Cache | 16 MB | 30 MB (shared) |

| Memory Support | DDR5, LPDDR5X | DDR5 |

| Memory Bandwidth | 89.6 GB/s | 102.4 GB/s |

| ECC Memory | No | Yes |

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

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

| Market Segment | Mobile | Desktop |

| Multiplier Unlocked | No | Yes |

| Part Number | 100-000001682 | SRQCW |

| Release Date | 2024-06-30 | 2024-10-23 |

| Launch MSRP | Not specified | $394 |

Head-to-Head Benchmarks

The Cinebench suite reveals the scale of Intel's advantage in render workloads. In Cinebench R15 multicore, the Intel Core Ultra 7 265K scores 5020 against AMD's 3334, a 33.6% lead. The R15 single-core test shows an even larger gap: Intel scores 708, AMD scores 301, a 57.5% difference. Cinebench R23 multicore continues the pattern: Intel at 35850, AMD at 21812, a 39.2% margin. The R23 single-core result is the closest contest anywhere, with Intel at 2020 and AMD at 1988, a narrow 1.6% edge.

Geekbench results reinforce Intel's dominance. The multicore score of 23085 versus AMD's 13957 gives Intel a 39.5% advantage. Single-core shows 2713 versus 2084, a 23.2% gap. These numbers indicate that the Intel chip delivers substantially higher throughput in both lightly threaded and heavily threaded applications.

PassMark tests cover a wide range of computational tasks. Data compression shows Intel at 665554 against AMD's 404918, a 39.2% lead. Data encryption scores 48246 versus 20802, a 56.9% gap. Extended instructions see Intel at 54333 and AMD at 29269, a 46.1% difference. The prime number test produces the largest margin: Intel at 491, AMD at 122, a 75.2% gap.

Floating point math heavily favors Intel, with 189629 versus 75153, a 60.4% difference. Integer math shows a smaller but still clear Intel lead: 143242 versus 121754, a 15% margin. Multithread performance scores 58594 for Intel and 32916 for AMD, a 43.8% gap. Physics tests show Intel at 3731 and AMD at 1819, a 51.2% difference. Random string sorting gives Intel 79752 and AMD 44552, a 44.1% lead. Single-thread results mirror the Geekbench single-core pattern: Intel at 4928, AMD at 3867, a 21.5% difference.

The overall average benchmark score tells the same story. The Intel Core Ultra 7 265K averages 70879, placing it in the 94th percentile of all CPUs. The AMD Ryzen AI 9 HX 375 averages 46030, placing it in the 89th percentile. Intel's nearest rivals include the Intel Xeon 6511P and the Intel Core i7-14700KF, both within 1% of its average score. AMD's nearest rivals include the Intel Core Ultra 5 235 and the AMD EPYC 4364P, also within fractions of a percent. These percentile figures confirm that both chips sit high in the overall performance distribution, but Intel occupies a clearly higher tier.