AMD Ryzen 7 7435HS vs AMD Ryzen 9 6900HX Comparison

The data reveals a clear split: the AMD Ryzen 7 7435HS dominates in multi-threaded rendering workloads, while the AMD Ryzen 9 6900HX counters with consistent wins across a broader range of general-purpose and math-intensive benchmarks. Despite both CPUs sharing the same 8-core, 16-thread Zen 3+ foundation on a 6nm TSMC process, their performance profiles diverge sharply depending on the specific application, with the 7435HS delivering a stunning 80% lead in Cinebench R23 single-core and a 47.2% lead in multi-core, while the 6900HX takes the Passmark single-thread test by 7.1% and edges ahead in integer and floating-point math. The 7435HS wins 9 head-to-head tests; the 6900HX wins 12.

Where Each One Wins

The Ryzen 7 7435HS is the clear choice for rendering and heavily threaded creative workloads. Its wins in the Cinebench suite are decisive; the R23 multi-core score of 19,873 versus 13,497 for the 6900HX is a 47.2% margin that dwarfs any other difference between these parts. The 3DMark tests also favor the 7435HS, with wins in the 16-thread (6,915 vs 6,745), 8-thread (5,813 vs 5,607), and max-thread (6,900 vs 6,717) runs, suggesting better scaling when all cores are active. Even the 4-thread test goes to the 7435HS, albeit by a slim 0.6% margin. This paints a picture of a CPU that efficiently marshals its 8 cores for sustained multi-core output.

The Ryzen 9 6900HX, conversely, wins where single-thread responsiveness and raw math throughput are prioritized. It takes the 3DMark single-thread test (912 vs 888) and the Passmark single-thread test (3,409 vs 3,167, a 7.1% edge). Its Passmark wins are numerous: integer math (89,388 vs 85,274), floating-point math (49,981 vs 48,863), find prime numbers (63 vs 54), physics (1,153 vs 991), and multithread (24,346 vs 23,393). The data suggests the 6900HX is the better all-rounder for everyday tasks and lightly threaded applications, whereas the 7435HS is a specialized tool for content creation. The 7435HS also wins in data compression (310,038 vs 306,184) and extended instructions (21,690 vs 20,849), but the 6900HX’s broader spread of wins in the Passmark suite indicates a more balanced execution profile.

Architecture Differences

Both processors are built on the same Zen 3+ architecture, codenamed Rembrandt, and manufactured on TSMC’s 6nm process. The 7435HS is specifically designated as Rembrandt-R, while the 6900HX is the original Rembrandt. Core counts are identical at 8 cores and 16 threads, and both feature the same cache hierarchy: 64 KB of L1 per core, 512 KB of L2 per core, and a shared 16 MB L3 cache. They also share the same Socket FP7, dual-channel DDR5 memory support with a 76.8 GB/s bandwidth, and PCIe Gen 4 with 20 CPU lanes.

The critical architectural differences are subtle but consequential. The 6900HX has a higher base clock of 3.30 GHz and a boost clock of 4.90 GHz, compared to the 7435HS’s 3.10 GHz base and 4.50 GHz boost. This clock advantage explains the 6900HX’s wins in single-threaded and latency-sensitive tests. However, the 7435HS manages to outperform in Cinebench R23, which suggests its silicon is better optimized for sustained all-core boosts or has more favorable power delivery characteristics. The 6900HX also includes integrated Radeon 680M graphics, while the 7435HS has no integrated graphics listed, making the 6900HX a more versatile mobile option for systems without a discrete GPU. The 6900HX is also multiplier-unlocked, offering overclocking headroom, and supports ECC memory, whereas the 7435HS does not list ECC support. The die sizes are nearly identical (210 mm² for the 7435HS vs 208 mm² for the 6900HX), reinforcing that these are two variations of the same fundamental chip design.

Head-to-Head Benchmarks

The most dramatic divergence appears in Cinebench R23. The 7435HS scores 19,873 in multi-core versus 13,497 for the 6900HX, a 47.2% advantage. The single-core result is even more lopsided: 2,805 vs 1,558, an 80% lead for the 7435HS. This is a stark anomaly given the 6900HX’s higher clock speeds, and it suggests the 7435HS benefits from significant architectural or firmware-level tuning that the older Rembrandt part lacks. In Cinebench R15, the results flip: the 6900HX wins multi-core (2,231 vs 2,003, a 10.2% margin), while the 7435HS wins single-core (282 vs 249, a 13.3% margin). This inconsistency across Cinebench versions indicates that the two processors respond very differently to the specific workload characteristics of each benchmark, with the newer R23 test heavily favoring the 7435HS.

In 3DMark, the 7435HS takes the 16-thread (6,915 vs 6,745), 8-thread (5,813 vs 5,607, a 3.7% win), and max-thread (6,900 vs 6,717) tests, while the 6900HX wins only the 2-thread (1,767 vs 1,752) and single-thread (912 vs 888) tests. This pattern reinforces the 7435HS’s multi-core strength. The Passmark suite tells a different story, with the 6900HX winning 7 of the 11 tests, including the headline multithread score (24,346 vs 23,393) and single-thread score (3,409 vs 3,167). The 6900HX’s wins in integer math (89,388 vs 85,274) and floating-point math (49,981 vs 48,863) are modest but consistent, while its 14.1% lead in physics (1,153 vs 991) and 14.3% lead in find prime numbers (63 vs 54) show a clear advantage in specific computational tasks. The 7435HS counters with a 4% win in extended instructions (21,690 vs 20,849) and a 1.3% win in data compression (310,038 vs 306,184).

FAQ

Q: Which CPU has the higher boost clock?

A: The AMD Ryzen 9 6900HX has a boost clock of 4.90 GHz, while the AMD Ryzen 7 7435HS has a lower boost clock of 4.50 GHz.

Q: Does the Ryzen 7 7435HS have integrated graphics?

A: No, the data lists no integrated graphics for the 7435HS, whereas the Ryzen 9 6900HX includes Radeon 680M graphics.

Q: Which processor is better for Cinebench R23 multi-core rendering?

A: The Ryzen 7 7435HS is overwhelmingly better, scoring 19,873 versus 13,497 for the 6900HX, a 47.2% lead.

Q: Are these CPUs based on the same architecture?

A: Yes, both are Zen 3+ (Rembrandt), with the 7435HS being the Rembrandt-R variant and the 6900HX the original Rembrandt.

Q: Which CPU has more cache?

A: They have identical cache configurations: 64 KB L1 per core, 512 KB L2 per core, and 16 MB shared L3.

Q: Does the Ryzen 9 6900HX support ECC memory?

A: No, the data shows ECC memory support is not enabled for the 6900HX, but it is listed as supported for the 7435HS.

Specification Differences

| Specification | AMD Ryzen 7 7435HS | AMD Ryzen 9 6900HX |

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

| Base Clock | 3.10 GHz | 3.30 GHz |

| Boost Clock | 4.50 GHz | 4.90 GHz |

| Die Size | 210 mm² | 208 mm² |

| Integrated Graphics | None | Radeon 680M |

| ECC Memory | True | False |

| Multiplier Unlocked | False | True |

| Codename | Rembrandt-R | Rembrandt |

| Part Number | 100-000001506 | 100-000000544100-000000560 |

| Cinebench R23 Multi-Core | 19,873 | 13,497 |

| Cinebench R23 Single-Core | 2,805 | 1,558 |

| Passmark Single-Thread | 3,167 | 3,409 |

The Verdict

The data directs different users to different processors. The Ryzen 7 7435HS is the definitive choice for multi-core rendering and creative workloads where Cinebench R23 performance is a proxy for real-world productivity. Its 47.2% multi-core and 80% single-core leads over the 6900HX in the R23 test are too substantial to ignore, and its wins across all 3DMark multi-threaded tests confirm that it scales well with parallel workloads. However, the 6900HX is the better all-rounder for general-purpose computing. Its higher clock speeds (4.90 GHz boost vs 4.50 GHz) translate into wins in the Passmark suite, including a 7.1% lead in single-thread performance and a 3.9% lead in multithread performance. The 6900HX also has the advantage of integrated Radeon 680M graphics, making it a more flexible option for thin-and-light laptops without discrete GPUs. For users who prioritize raw rendering power and can rely on a discrete GPU, the 7435HS is the pick. For those who need a balanced mobile CPU with integrated graphics, ECC support, and overclocking capability, the 6900HX is the safer bet. The average benchmark scores are nearly identical (26,402 for the 7435HS vs 26,274 for the 6900HX), but the distribution of wins is not, making the choice dependent entirely on the workload.