AMD Ryzen 7 8745HX vs AMD Ryzen AI 5 435 Comparison

Head-to-Head Benchmarks

The benchmark data records 11 head-to-head comparisons between the AMD Ryzen 7 8745HX and the AMD Ryzen AI 5 435. The Ryzen 7 8745HX wins all 11 tests, with margins ranging from a modest 3.9% to a dominant 174.1%.

The largest single victory comes in the PassMark find prime numbers test. The Ryzen 7 8745HX scores 159, while the Ryzen AI 5 435 scores 58, a 174.1% advantage. This indicates a substantial difference in raw integer throughput per core, a workload where the Dragon Range chip's higher boost clock and Zen 4 architecture excel.

Data encryption shows the second-largest gap. The Ryzen 7 8745HX delivers 21,840 points against 11,110 for the Ryzen AI 5 435, a 96.6% lead. Encryption workloads are sensitive to both core count and instruction-level parallelism, and the 8-core, 16-thread configuration of the 8745HX clearly overwhelms the 6-core, 12-thread Ryzen AI 5 435.

Random string sorting favors the 8745HX by 78.8%, with scores of 44,494 versus 24,891. This test measures memory access patterns and cache efficiency under random data. The 8745HX's 32 MB shared L3 cache provides a significant advantage over the 4 MB L3 on the Ryzen AI 5 435, reducing memory latency for large working sets.

Extended instructions show a 70.6% margin (27,638 versus 16,197), while integer math scores 64.4% higher (100,328 versus 61,026). The multithread benchmark records a 65.9% lead (31,517 versus 19,000), confirming that the combination of two additional cores, four additional threads, and a higher 55 W TDP translates directly into multi-threaded performance.

Floating-point math delivers a 52.5% advantage (61,972 versus 40,627), and physics simulation shows 56.4% higher performance (1,681 versus 1,075). Data compression completes the sweep with a 61.4% lead (363,759 versus 225,374).

The closest contest is single-thread performance. The 8745HX scores 3,879 against 3,734, a 3.9% edge. This is notable because the Ryzen AI 5 435 uses the newer Zen 5 architecture built on a 4 nm process. Despite the architectural generational advantage, the 8745HX's higher 5.10 GHz boost clock (versus 4.50 GHz) and its 3.60 GHz base clock (versus 2.00 GHz) are sufficient to keep the older Zen 4 design ahead in single-core work.

The aggregate average benchmark score reinforces the picture: the Ryzen 7 8745HX averages 60,104 points across its benchmark suite, while the Ryzen AI 5 435 averages 28,128 points. The 8745HX sits at the 92nd percentile among all CPUs in the database, while the Ryzen AI 5 435 sits at the 80th percentile.

FAQ

Q: Which processor wins the most benchmarks?

A: The AMD Ryzen 7 8745HX wins all 11 recorded head-to-head benchmarks. The AMD Ryzen AI 5 435 does not win a single test in the comparison set.

Q: How close is single-thread performance between the two?

A: The Ryzen 7 8745HX scores 3,879 in the PassMark single-thread test, which is 3.9% ahead of the Ryzen AI 5 435's 3,734. This is the narrowest margin across all recorded benchmarks.

Q: Where does the Ryzen AI 5 435 rank relative to other CPUs?

A: The Ryzen AI 5 435 sits at the 80th percentile among all CPUs in the database. Its nearest rivals include the Intel Core i5-13490F (average score 28,185, 0.2% higher), the Intel Core i5-14500T (28,065, 0.2% lower), and the AMD Ryzen 5 PRO 8500GE (28,054, 0.3% lower).

Q: How does the Ryzen 7 8745HX compare to its nearest rivals?

A: The Ryzen 7 8745HX's average benchmark score of 60,104 places it within 0.8% of the AMD Ryzen 9 7945HX3D (59,641) and 0.2% of the Intel Core i9-14900F (60,008). The Intel Xeon Gold 6338T scores 60,572, which is 0.8% higher.

Q: What causes the large gap in multithreaded workloads?

A: The Ryzen 7 8745HX has 8 cores and 16 threads versus 6 cores and 12 threads on the Ryzen AI 5 435. The multithread benchmark shows a 65.9% advantage for the 8745HX, reflecting both the core count difference and the higher 55 W TDP versus 28 W.

Q: Does the newer architecture of the Ryzen AI 5 435 close the gap?

A: The Ryzen AI 5 435 uses Zen 5 architecture on a 4 nm process, while the Ryzen 7 8745HX uses Zen 4 on 5 nm. Despite this, the 8745HX still leads in every benchmark, including single-thread tests by 3.9%. The Ryzen AI 5 435's lower clock speeds (2.00 GHz base, 4.50 GHz boost) and smaller 4 MB L3 cache limit its performance potential.

Architecture Differences

The two processors represent different design philosophies within AMD's mobile lineup. The Ryzen 7 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 and contains 6,570 million transistors on a 71 mm² die. The Ryzen AI 5 435 belongs to the Ryzen AI 400 series, uses the Zen 5 architecture (with Zen 5c elements) under the Gorgon Point codename, and is built on a 4 nm process at TSMC. The database does not record transistor count or die size for the Ryzen AI 5 435.

Cache hierarchies differ substantially. The Ryzen 7 8745HX provides 64 KB of L1 cache per core, 1 MB of L2 per core, and 32 MB of shared L3 cache. The Ryzen AI 5 435 provides 80 KB of L1 per core, 1 MB of L2 per core, but only 4 MB of shared L3. The 8x difference in L3 capacity is a major factor in workloads that repeatedly access large datasets, such as data compression and random string sorting.

The socket platforms differ as well. The Ryzen 7 8745HX uses AMD Socket FL1, while the Ryzen AI 5 435 uses AMD Socket FP8. This means the two chips are not interchangeable in a given motherboard. The Ryzen 7 8745HX supports PCIe Gen 5 with 28 CPU lanes, while the Ryzen AI 5 435 supports PCIe Gen 4 with 14 CPU lanes.

Memory support shows notable differences. Both support DDR5 in dual-channel configuration, but the Ryzen AI 5 435 additionally supports LPDDR5X. Memory bandwidth figures are close: 83.2 GB/s for the 8745HX versus 89.6 GB/s for the Ryzen AI 5 435. ECC memory support also differs, with the Ryzen AI 5 435 supporting ECC while the 8745HX does not.

Integrated graphics differentiate the two. The Ryzen 7 8745HX includes a Radeon 610M, while the Ryzen AI 5 435 includes a Radeon 840M. The Ryzen 7 8745HX has an unlocked multiplier, whereas the Ryzen AI 5 435 does not.

Specification Differences

| Specification | AMD Ryzen 7 8745HX | AMD Ryzen AI 5 435 |

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

| Cores | 8 | 6 |

| Threads | 16 | 12 |

| Base clock | 3.60 GHz | 2.00 GHz |

| Boost clock | 5.10 GHz | 4.50 GHz |

| TDP | 55 W | 28 W |

| Socket | AMD Socket FL1 | AMD Socket FP8 |

| Architecture | Zen 4 | Zen 5 |

| Codename | Dragon Range | Gorgon Point |

| Process node | 5 nm | 4 nm |

| L1 cache | 64 KB per core | 80 KB per core |

| L3 cache | 32 MB shared | 4 MB |

| Memory support | DDR5 | DDR5, LPDDR5X |

| Memory bandwidth | 83.2 GB/s | 89.6 GB/s |

| ECC memory | No | Yes |

| PCIe | Gen 5, 28 lanes | Gen 4, 14 lanes |

| Integrated graphics | Radeon 610M | Radeon 840M |

| Unlocked multiplier | Yes | No |

| Release date | 2025-04-22 | 2026-01-04 |

The Ryzen 7 8745HX leads in core count, thread count, clock speeds, and TDP. The Ryzen AI 5 435 counters with a smaller process node, larger per-core L1 cache, LPDDR5X memory support, ECC memory, and a newer architecture. The release dates differ by roughly eight months, with the 8745HX launching first.

The Verdict

The data points to a clear performance hierarchy. The AMD Ryzen 7 8745HX is the stronger processor in every recorded benchmark, with an average score of 60,104 that places it at the 92nd percentile. It delivers decisive wins in multi-threaded workloads, data-heavy tasks, and even single-thread performance, where its 3.9% lead over the newer Zen 5 chip shows that clock speed still matters.

The Ryzen AI 5 435, with an average score of 28,128 at the 80th percentile, is a more modest performer. Its advantages are architectural rather than performance-based: a 4 nm process, Zen 5 cores, LPDDR5X support, ECC memory, and a lower 28 W TDP. These features make it appropriate for systems where power efficiency, platform flexibility, and memory options take priority over raw compute throughput.

For workloads that demand maximum processing power, such as data compression, encryption, physics simulation, and heavy multithreading, the Ryzen 7 8745HX is the clear choice. The 61.4% to 174.1% margins in these tests are too large for software optimization to close.

For users who prioritize a modern platform with a smaller process node, newer architecture, ECC memory support, and lower power consumption, the Ryzen AI 5 435 offers those attributes, but it does so while sacrificing substantial computational performance. The single-thread gap of 3.9% is the only area where the two chips approach parity, and even there, the 8745HX holds the advantage.

The verdict from the recorded data is straightforward: the Ryzen 7 8745HX wins on performance across the board, while the Ryzen AI 5 435 offers platform-level features that the 8745HX lacks. The choice depends entirely on whether raw benchmark scores or architectural features matter more for the intended use case.