AMD Ryzen 7 8745HX vs AMD Ryzen AI 9 365 Comparison

Where Each One Wins

The benchmark split between these two mobile processors is heavily one-sided in raw workload counts, but the margins tell a more nuanced story. The AMD Ryzen 7 8745HX takes 8 of the 11 head-to-head tests, while the AMD Ryzen AI 9 365 secures 3 wins. A closer look at the deltas reveals that the 8745HX often wins by large margins in specific compute tasks, while the AI 9 365 edges ahead only by slim percentages in its three victories.

The 8745HX dominates in data compression, scoring 363759 against 354510, a 2.6 percent advantage. The gap widens considerably in data encryption, where the 8745HX posts 21840 versus 18297, a 19.4 percent lead. Extended instructions also favor the 8745HX by 10.1 percent, with scores of 27638 and 25113. The largest single win for the 8745HX comes in prime number finding, where it scores 159 versus 117, a 35.9 percent advantage. Random string sorting goes to the 8745HX by 12.8 percent, with scores of 44494 and 39447. The multithread test shows a 7 percent lead for the 8745HX, 31517 versus 29467. Single-thread performance narrowly favors the 8745HX at 3879 versus 3841, a 1 percent edge.

The AI 9 365 wins floating point math by a slim 1.3 percent, scoring 62802 against 61972. Integer math also goes to the AI 9 365 by 1.5 percent, at 101831 versus 100328. The physics test shows the AI 9 365 ahead by 1.3 percent, 1704 versus 1681. These three wins are all close calls, indicating that the AI 9 365 holds a slight edge in certain arithmetic and physics workloads but cannot match the 8745HX in tasks that stress memory bandwidth, encryption, or sorting.

The average benchmark score paints a different picture than the head-to-head wins. The 8745HX records an average benchmark score of 60104, placing it at the 92nd percentile among all CPUs. The AI 9 365 averages 40048, landing at the 87th percentile. This large gap in average scores reflects the fact that the AI 9 365's benchmark suite includes Cinebench and Geekbench results, which are not present for the 8745HX in the database. The AI 9 365 scores 2842 in Cinebench R15 multicore and 303 in single-core, plus 18698 in Cinebench R23 multicore and 1992 in single-core. Geekbench results show 13760 multicore and 2253 single-core for the AI 9 365. These additional tests lower its average relative to the 8745HX, which only has PassMark results recorded.

Architecture Differences

The two processors come from different design philosophies within AMD's mobile lineup. The 8745HX belongs to the 8000 series and uses the Zen 4 architecture under the Dragon Range codename. It is built on a 5 nm process at TSMC with 6,570 million transistors on a 71 mm² die. The AI 9 365 uses the Zen 5 architecture under the Strix Point codename, fabricated on a 4 nm process at TSMC with a 233 mm² die size.

Core configurations differ significantly. The 8745HX has 8 cores and 16 threads, while the AI 9 365 packs 10 cores and 20 threads. The AI 9 365 uses a hybrid arrangement of Zen 5 and Zen 5c cores, as noted in its generation field. The 8745HX uses only full Zen 4 cores. Clock speeds are markedly different: the 8745HX runs at a 3.60 GHz base clock and boosts to 5.10 GHz, while the AI 9 365 operates at a 2.00 GHz base and 5.00 GHz boost. The higher base clock of the 8745HX suggests sustained performance under load, though the AI 9 365's boost clock nearly matches it.

Cache hierarchies also diverge. The 8745HX provides 64 KB of L1 cache per core, 1 MB of L2 per core, and 32 MB of shared L3 cache. The AI 9 365 offers 80 KB of L1 per core, 1 MB of L2 per core, and only 16 MB of L3. The larger L3 pool on the 8745HX may explain its strong showing in data compression and encryption, which benefit from larger working sets. The AI 9 365 compensates with a higher per-core L1 allocation.

Memory support shows a split in memory types. The 8745HX supports DDR5 only, while the AI 9 365 supports both DDR5 and LPDDR5X. Both use dual-channel memory buses. The AI 9 365 achieves a higher memory bandwidth of 89.6 GB/s versus 83.2 GB/s for the 8745HX. Neither processor supports ECC memory.

PCIe connectivity is another differentiator. The 8745HX uses PCIe Gen 5 with 28 lanes from the CPU, while the AI 9 365 uses PCIe Gen 4 with 16 lanes. The newer PCIe generation and higher lane count on the 8745HX give it more headroom for discrete GPUs and storage expansion.

Integrated graphics differ as well. The 8745HX carries a Radeon 610M, while the AI 9 365 uses a Radeon 880M. The AI 9 365's newer and likely more capable iGPU is not benchmarked in the provided data, but the model number suggests a higher tier.

Power and socket configurations set these chips apart for different laptop classes. The 8745HX has a 55 W TDP and uses AMD Socket FL1, while the AI 9 365 has a 28 W TDP and uses AMD Socket FP8. The 8745HX is multiplier-unlocked, whereas the AI 9 365 is locked. Release dates differ by nearly a year: the AI 9 365 launched on June 30, 2024, and the 8745HX on April 22, 2025. Both are active production parts in the mobile segment.

Head-to-Head Benchmarks

The largest margin in the entire comparison appears in prime number finding. The 8745HX scores 159 against 117 for the AI 9 365, a 35.9 percent advantage. This test heavily favors the higher clock speeds and larger cache of the 8745HX. Data encryption shows a 19.4 percent lead for the 8745HX, with 21840 versus 18297. Random string sorting goes to the 8745HX by 12.8 percent, 44494 versus 39447. Extended instructions follow with a 10.1 percent gap, 27638 versus 25113. The multithread test shows the 8745HX ahead by 7 percent, 31517 versus 29467. Data compression is a closer affair at 2.6 percent, 363759 versus 354510. Single-thread performance is nearly identical, with the 8745HX ahead by only 1 percent, 3879 versus 3841.

The AI 9 365's wins are all narrow. Floating point math gives it 62802 versus 61972, a 1.3 percent margin. Integer math shows 101831 versus 100328, a 1.5 percent edge. Physics delivers 1704 versus 1681, also a 1.3 percent margin. These results indicate that the AI 9 365's Zen 5 architecture provides a modest advantage in pure arithmetic throughput, but it cannot overcome the 8745HX's advantages in memory-heavy and encryption workloads.

The nearest rivals in the database provide context for each chip's standing. The 8745HX sits close to the AMD Ryzen 9 7945HX with a 0 percent delta, the Intel Core i9-14900F at a 0.2 percent delta, and the AMD Ryzen 9 7945HX3D at a 0.8 percent delta. The Intel Xeon Gold 6338T is 0.8 percent behind. The AI 9 365 is nearly tied with the AMD Ryzen 7 7700 at a negative 0.1 percent delta, the Intel Core 5 221E at negative 0.2 percent, the AMD Ryzen 9 270 at negative 0.5 percent, and the Intel Core i9-13905H at negative 0.7 percent. These rival placements show that the 8745HX competes in a higher performance tier, while the AI 9 365 aligns with desktop-class mid-range chips.

The percentile rankings reinforce this tiering. The 8745HX sits at the 92nd percentile of all CPUs, while the AI 9 365 sits at the 87th. The five-point gap in percentile is modest, but the average benchmark score difference of 60104 versus 40048 is substantial. This discrepancy stems from the different test suites recorded for each processor, as noted earlier.

The Verdict

The data points to a clear performance hierarchy. The 8745HX is the stronger processor for compute-heavy tasks that involve compression, encryption, sorting, and prime number calculations. Its 8-core, 16-thread configuration with a 5.10 GHz boost clock and 32 MB of L3 cache delivers decisive wins in these areas. The 55 W TDP and unlocked multiplier position it for high-performance laptops where thermal headroom is available.

The AI 9 365 targets efficiency and portability. Its 28 W TDP, 10-core, 20-thread hybrid design, and support for LPDDR5X make it suitable for thinner systems. It wins in floating point math, integer math, and physics, but only by margins of 1.3 to 1.5 percent. Its higher memory bandwidth of 89.6 GB/s and larger L1 cache per core do not translate into broad benchmark dominance. The single-thread gap is nearly negligible, at 1 percent in favor of the 8745HX.

Users who need maximum throughput in encryption, data compression, or sorting workloads should favor the 8745HX. Users who prioritize a lower-power platform with a more capable integrated GPU, the Radeon 880M, and a newer Zen 5 architecture should consider the AI 9 365. The 8745HX's PCIe Gen 5 support and 28 lanes provide expansion advantages, while the AI 9 365's DDR5 and LPDDR5X memory flexibility suits varied system designs.

The average benchmark score of 60104 for the 8745HX versus 40048 for the AI 9 365 cannot be directly compared across different test suites, but the head-to-head PassMark results show the 8745HX winning 8 of 11 tests. The AI 9 365's three wins are all within 1.5 percent, while the 8745HX's wins range from 1 to 35.9 percent. This asymmetry in margins matters more than the raw win count.

FAQ

Q: Which processor has more cores and threads?

A: The AMD Ryzen AI 9 365 has 10 cores and 20 threads, while the AMD Ryzen 7 8745HX has 8 cores and 16 threads.

Q: What is the biggest benchmark margin between the two?

A: The AMD Ryzen 7 8745HX leads by 35.9 percent in the passmark_find_prime_numbers test, scoring 159 versus 117.

Q: Which processor has a higher boost clock?

A: The AMD Ryzen 7 8745HX boosts to 5.10 GHz, slightly higher than the AMD Ryzen AI 9 365's 5.00 GHz boost clock.

Q: Which processor supports LPDDR5X memory?

A: The AMD Ryzen AI 9 365 supports both DDR5 and LPDDR5X, while the AMD Ryzen 7 8745HX supports DDR5 only.

Q: What is the TDP difference between the two processors?

A: The AMD Ryzen 7 8745HX has a 55 W TDP, while the AMD Ryzen AI 9 365 has a 28 W TDP.

Q: Which processor has a larger L3 cache?

A: The AMD Ryzen 7 8745HX has 32 MB of shared L3 cache, double the 16 MB of L3 cache on the AMD Ryzen AI 9 365.