AMD Ryzen 7 7736U vs AMD Ryzen 7 7840HS Comparison

The AMD Ryzen 7 7736U and AMD Ryzen 7 7840HS are both 8-core, 16-thread mobile processors from the 7000 series, yet they target distinctly different performance tiers. The benchmark data shows a definitive sweep: the 7840HS wins every single head-to-head comparison, with margins ranging from 9.2% to 37.1%. However, the 7736U is not without its own positioning, offering a lower thermal envelope and a different architectural foundation. This analysis breaks down the data to show exactly where these two parts diverge and what that means for system designers.

FAQ

Q: Which processor has the higher multi-core performance in Cinebench R23?

A: The AMD Ryzen 7 7840HS scores 15102 in Cinebench R23 multi-core, which is 15.5% ahead of the 7736U’s 12768. This is one of the larger gaps in the benchmark suite, indicating a substantial advantage in heavily threaded workloads.

Q: How significant is the single-core performance difference?

A: The 7840HS leads by 12.1% in Cinebench R23 single-core (1761 vs 1548) and by 15.3% in Geekbench single-core (2031 vs 1721). The gap is consistent, suggesting the 7840HS has a clear advantage in lightly threaded tasks like everyday responsiveness.

Q: What is the most dramatic performance disparity between the two?

A: The Geekbench multi-core test shows the largest delta, with the 7840HS scoring 11846 against the 7736U’s 7453. That is a 37.1% difference, the widest margin in the entire head-to-head dataset.

Q: Does the 7736U win any benchmark comparisons?

A: No. According to the head-to-head data, the 7840HS wins all 17 recorded benchmarks. The 7736U’s win count is 0.

Q: Are there any architectural differences that explain the performance gap?

A: Yes. The 7840HS uses the newer Zen 4 architecture on a 4 nm process, while the 7736U uses Zen 3+ on a 6 nm process. The 7840HS also has higher base and boost clocks (3.80 GHz and 5.10 GHz vs 2.70 GHz and 4.70 GHz) and a larger L2 cache (1 MB per core vs 512 KB per core).

Q: Do both processors support the same memory and expansion features?

A: Both support dual-channel DDR5 memory and PCIe Gen 4 with 20 lanes (CPU only). However, the 7840HS has a higher theoretical memory bandwidth of 89.6 GB/s compared to the 7736U’s 76.8 GB/s.

Architecture Differences

The architectural gap between these two parts is foundational. The 7736U is built on the Zen 3+ architecture, codenamed Rembrandt-R, while the 7840HS utilizes the newer Zen 4 architecture with the Phoenix codename. This generational shift is paired with a change in process node: the 7736U is fabricated on TSMC’s 6 nm node, whereas the 7840HS moves to the more advanced 4 nm node. The die size also differs, with the 7736U measuring 208 mm² and the 7840HS being slightly smaller at 178 mm².

These architectural changes manifest in several key specification differences. The 7840HS operates at significantly higher clock speeds, with a base clock of 3.80 GHz and a boost clock of 5.10 GHz. The 7736U, by contrast, has a base clock of just 2.70 GHz and a boost clock of 4.70 GHz. This clock advantage is a primary driver of the performance deltas observed in benchmarks. The cache hierarchy also sees a notable upgrade on the 7840HS: while both share 16 MB of L3 cache, the L2 cache is doubled on the 7840HS to 1 MB per core, compared to 512 KB per core on the 7736U. L1 cache remains identical at 64 KB per core.

The integrated graphics differ as well. The 7736U comes with a Radeon 680M, while the 7840HS is equipped with the newer Radeon 780M. The 7840HS also has a higher rated TDP of 35 watts, more than double the 7736U’s 15-watt design. This power envelope is critical; it allows the 7840HS to sustain higher clocks under load, but it also means the 7736U is designed for more power-constrained, thinner systems. Both processors use different sockets — the 7736U uses AMD Socket FP7, while the 7840HS uses AMD Socket FP8 — making them not directly interchangeable on the same motherboard.

Head-to-Head Benchmarks

The benchmark results are unilateral. The 7840HS wins every comparison, but the margins vary significantly by workload type. The largest gap is in Geekbench multi-core, where the 7840HS scores 11846 versus the 7736U’s 7453, a 37.1% advantage. This indicates a massive throughput advantage in heavily parallelized, real-world application-style tests. The PassMark find prime numbers test shows a similar scale of difference, with the 7840HS scoring 88 against 56, a 36.4% lead.

In content creation and rendering workloads, the 7840HS maintains a strong but slightly narrower lead. Cinebench R23 multi-core shows a 15.5% advantage (15102 vs 12768), while Cinebench R15 multi-core shows a 9.2% edge (2222.84 vs 2019). The single-core results are closer in percentage terms, but still clearly favor the 7840HS: Cinebench R23 single-core is 12.1% ahead (1761 vs 1548), and Cinebench R15 single-core is 10.2% ahead (274 vs 246).

PassMark integer and floating-point math tests show the 7840HS leading by 20.1% (98682 vs 78821) and 25.7% (59921 vs 44499), respectively. The data encryption test shows a 24.2% gap (20627 vs 15635), while data compression is 20.6% ahead (345536 vs 274440). The 7840HS also leads in memory-sensitive tasks like random string sorting by 30.2% (40364 vs 28172). In the PassMark multithread test, the 7840HS scores 28633 against 21725, a 24.1% advantage. The physics test shows a 26.8% lead (1376 vs 1007). Even in single-threaded PassMark tests, the 7840HS is 10.7% ahead (3753 vs 3350). Across the board, the 7840HS demonstrates a consistent, commanding lead that scales with thread count and clock speed.

The Verdict

The data presents a clear hierarchy. The AMD Ryzen 7 7840HS is the superior processor in every measured benchmark. With an average benchmark score of 29955 and a percentile ranking of 81, it sits in the same overall performance tier as the 7736U (which also ranks at the 81st percentile with an average score of 30364), but the head-to-head results tell a more specific story. The 7840HS's wins are not marginal; they are decisive, often exceeding 20% and reaching as high as 37.1% in multi-core throughput.

For a system builder prioritizing raw performance, the choice is the 7840HS. Its higher clock speeds, newer Zen 4 architecture, and larger L2 cache translate directly into better scores in every category, from single-core responsiveness to multi-core rendering. The 35-watt TDP is the cost of this performance, requiring more substantial cooling and power delivery.

The 7736U is not without a role. Its 15-watt TDP makes it a fit for fanless or ultra-thin designs where thermal headroom is minimal. While it loses every benchmark, it still offers 8 cores and 16 threads, and its average benchmark score of 30364 is actually slightly higher than the 7840HS's 29955, due to different benchmark distributions. However, in any direct comparison, the 7840HS is the clear winner. The 7736U is for systems where power efficiency trumps performance, while the 7840HS is for systems where performance is the primary goal.

Specification Differences

The following table outlines the key specification differences between the two processors, based solely on the provided data.

| Specification | AMD Ryzen 7 7736U | AMD Ryzen 7 7840HS |

| :--- | :--- | :--- |

| Base Clock | 2.70 GHz | 3.80 GHz |

| Boost Clock | 4.70 GHz | 5.10 GHz |

| TDP | 15 W | 35 W |

| Socket | AMD Socket FP7 | AMD Socket FP8 |

| Architecture | Zen 3+ | Zen 4 |

| Codename | Rembrandt-R | Phoenix |

| Process Node | 6 nm | 4 nm |

| Die Size | 208 mm² | 178 mm² |

| Transistors | Not specified | 25,000 million |

| L2 Cache | 512 KB (per core) | 1 MB (per core) |

| Memory Bandwidth | 76.8 GB/s | 89.6 GB/s |

| Integrated Graphics | Radeon 680M | Radeon 780M |

| Part Number | 100-000000534(FP7)100-000000617(FP7r2) | 100-000000955(FP7r2)100-000000964(FP7)100-000001129(FP8) |

| Release Date | 2023-01-03 | Not specified |