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

FAQ

Q: Which CPU is faster in multi-threaded workloads?

A: The AMD Ryzen 7 7840H dominates multi-threaded tests. In Cinebench R23 multi-core, it scores 23,731 versus the Ryzen 7 7736U’s 12,768, a 46.2% advantage. PassMark multithread results echo this: 27,919 versus 21,725, a 22.2% lead.

Q: How big is the single-core performance gap?

A: The 7840H leads in every single-thread test. Cinebench R23 single-core shows 3,350 versus 1,548 — a 53.8% delta. PassMark single-thread narrows the gap to 8% (3,641 versus 3,350), but the 7840H still wins decisively.

Q: Do both CPUs have the same core and thread counts?

A: Yes. Both are 8-core, 16-thread processors. The difference is architectural: the 7736U uses Zen 3+ (Rembrandt-R) on a 6 nm node, while the 7840H uses Zen 4 (Phoenix) on a 4 nm node.

Q: Which chip has higher memory bandwidth?

A: The Ryzen 7 7840H offers 89.6 GB/s versus 76.8 GB/s for the 7736U. Both support DDR5 with dual-channel memory and ECC.

Q: Are the integrated graphics different?

A: Yes. The 7736U has a Radeon 680M, while the 7840H has a Radeon 780M. The 7840H’s newer Zen 4 architecture and higher TDP likely benefit its iGPU, though no direct iGPU benchmarks are in the data.

Q: How do these chips rank against all CPUs?

A: Both sit at the 81st percentile versus all CPUs. The 7736U has an average benchmark score of 30,364; the 7840H scores 29,868. The 7736U is marginally higher in aggregate, despite losing every head-to-head test.

Architecture Differences

The Ryzen 7 7736U and Ryzen 7 7840H are both 8-core, 16-thread mobile parts from AMD’s 7000 series, but they represent two distinct generations of silicon. The 7736U is built on Zen 3+ (codename Rembrandt-R) using TSMC’s 6 nm process, with a die size of 208 mm². The 7840H moves to Zen 4 (codename Phoenix) on TSMC’s 4 nm node, shrinking the die to 178 mm² while packing 25,000 million transistors. That process shrink and architecture update are the primary drivers of the performance gap.

Clock speeds differ substantially. The 7736U has a base clock of 2.70 GHz and a boost of 4.70 GHz. The 7840H starts at 3.80 GHz base and boosts to 5.10 GHz. Those higher clocks, combined with Zen 4’s improved IPC, explain why the 7840H wins every benchmark in the comparison set. The 7736U compensates with a 15 W TDP, versus 35 W for the 7840H — a significant power envelope difference that will matter in thin-and-light laptops.

Cache hierarchies also diverge. Both share 64 KB of L1 per core and 16 MB of shared L3, but the 7840H doubles the L2 cache to 1 MB per core, versus 512 KB per core on the 7736U. That extra L2 capacity helps feed the faster cores. Memory bandwidth improves as well: 89.6 GB/s on the 7840H versus 76.8 GB/s on the 7736U, both over dual-channel DDR5 with ECC support.

Socket and packaging differ. The 7736U uses AMD Socket FP7 (part numbers 100-000000534(FP7) and 100-000000617(FP7r2)), while the 7840H lists a broader set: 100-000000955(FP7r2), 100-000000964(FP7), and 100-000001129(FP8). Both support PCIe Gen 4 with 20 lanes (CPU only), and neither has an unlocked multiplier. The 7840H’s integrated graphics is the newer Radeon 780M, replacing the 7736U’s Radeon 680M.

Release timing confirms the generational split: the 7736U launched on 2023-01-03, while the 7840H has no listed release date in the data. Both are active production parts.

The Verdict

The data is unambiguous: the Ryzen 7 7840H wins all 15 head-to-head benchmarks against the Ryzen 7 7736U. There is no workload category in the comparison where the 7736U takes a lead. If raw performance is the priority, the 7840H is the only choice between these two.

The 7840H’s biggest victories come in multi-threaded rendering. Cinebench R23 multi-core shows a 46.2% advantage (23,731 versus 12,768), and Cinebench R15 multi-core follows with a 15.6% lead (2,392 versus 2,019). Single-core Cinebench R23 is even more lopsided: 3,350 versus 1,548, a 53.8% delta. Those numbers indicate a generational leap in both clock speed and per-core efficiency.

However, the 7736U is not without merit. Its 15 W TDP versus 35 W suggests significantly lower power draw, which translates to longer battery life and less heat in compact chassis. The 7736U also has a slightly higher average benchmark score (30,364 versus 29,868) and matches the 7840H’s 81st percentile ranking. That aggregate score likely reflects power-normalized performance across a broader test suite.

Who should pick which? Buyers who need maximum compute — content creation, compiling, heavy multitasking — should choose the 7840H without hesitation. Its Cinebench R23 multi-core score is nearly double the 7736U’s. Users prioritizing portability, fan noise, and battery longevity — and who can accept roughly 20-50% lower performance in demanding tasks — should consider the 7736U. The 7840H’s 35 W TDP will demand thicker cooling solutions, while the 7736U fits ultra-thin designs.

The 7840H’s nearest rivals (Ryzen 7 5800XT at 0% delta, Ryzen 7 8845HS at -0.3%, Ryzen 7 7840HS at -0.3%) show it sits at the top of its class. The 7736U’s rivals (Ryzen 5 7640HS at -0.1%, Core i9-11980HK at -0.2%) suggest it competes with lower-tier parts despite its 8-core configuration.

Specification Differences

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

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

| 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 |

| Transistors | Not listed | 25,000 million |

| Die Size | 208 mm² | 178 mm² |

| 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 |

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

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

Identical across both: 8 cores, 16 threads, 64 KB L1 per core, 16 MB shared L3, DDR5 memory support, dual-channel memory bus, ECC support, PCIe Gen 4 with 20 lanes, mobile market segment, active production status, and locked multipliers.

Head-to-Head Benchmarks

The 7840H wins every single comparison, but the margins vary wildly by workload. The largest gap is Cinebench R23 single-core: 3,350 versus 1,548, a 53.8% deficit for the 7736U. That result is striking because single-core performance typically scales more modestly between generations. The 7840H’s 5.10 GHz boost clock versus 4.70 GHz, combined with Zen 4’s IPC gains, explains the chasm.

Cinebench R23 multi-core shows a 46.2% lead (23,731 versus 12,768), the second-largest margin. This test scales across all 16 threads, and the 7840H’s higher sustained clocks under a 35 W TDP allow it to stretch further ahead than in shorter bursts. Cinebench R15 single-core follows at 27% (337 versus 246), while R15 multi-core is closer at 15.6% (2,392 versus 2,019).

PassMark results show consistent but smaller leads. The narrowest gap is single-thread: 3,641 versus 3,350, just 8%. Integer math shows an 18.5% advantage (96,692 versus 78,821), while data compression is 19.6% ahead (341,520 versus 274,440). Floating-point math runs 24.2% faster (58,724 versus 44,499), and extended instructions are 24.4% ahead (25,654 versus 19,384).

The remaining PassMark tests fall in a tight band. Data encryption: 22.5% (20,162 versus 15,635). Multithread: 22.2% (27,919 versus 21,725). Physics: 22.6% (1,301 versus 1,007). Random string sorting: 27.6% (38,938 versus 28,172). Find prime numbers: 32.5% (83 versus 56). The 7840H’s lead in prime numbers, a latency-sensitive test, aligns with its higher IPC and clock advantage.

Where Each One Wins

The Ryzen 7 7840H wins everywhere in raw performance. Its strongest categories are heavily multi-threaded workloads (Cinebench R23 multi-core, 46.2% ahead) and single-core latency (Cinebench R23 single-core, 53.8% ahead). Any task that stresses CPU throughput — video rendering, 3D modeling, code compilation, scientific simulation — favors the 7840H decisively. The PassMark data compression and encryption results (19.6% and 22.5% ahead) also point to faster file archiving and disk encryption.

The 7736U’s wins are not in the benchmark scores but in the specification sheet. Its 15 W TDP is less than half the 7840H’s 35 W, which indicates substantially lower power draw. For ultra-portable laptops, that means longer battery life, thinner chassis designs, and quieter cooling. The 7736U also has a smaller socket footprint (FP7 versus FP8), which may offer more motherboard design flexibility. Its average benchmark score of 30,364 actually exceeds the 7840H’s 29,868, suggesting that in aggregate, power-normalized performance is competitive.

The release date favors the 7736U (2023-01-03), giving it a defined market presence. The 7840H has no listed release date, which may indicate a later or staggered launch. Both sit at the 81st percentile, but the 7736U’s nearest rivals include the Ryzen 5 7640HS (-0.1%) and Intel Core i9-11980HK (-0.2%), while the 7840H competes with the Ryzen 7 5800XT (0%) and Ryzen 7 8845HS (-0.3%).

For buyers, the decision is simple: choose the 7840H for uncompromised performance, accept the 7736U only if power efficiency and portability outweigh a 20-50% performance deficit across most tests. There is no scenario in the data where the 7736U outperforms the 7840H in speed.