AMD Ryzen 7 9850X3D vs AMD Ryzen 9 8940HX Comparison

Head-to-Head Benchmarks

The recorded data shows a clear split between the two processors. The AMD Ryzen 9 8940HX wins 9 of the 15 head-to-head benchmarks, while the AMD Ryzen 7 9850X3D takes 6. The magnitude of the wins, however, tells a more nuanced story.

The Ryzen 9 8940HX dominates in multi-threaded workloads. In Cinebench R23 multi-core, it scores 32,521 against the Ryzen 7 9850X3D's 22,807, a 29.9% lead. The older Cinebench R15 multi-core test shows an even larger gap: 5,355 versus 3,551, a 33.7% advantage. PassMark integer math follows the same pattern, with the 8940HX at 189,221 versus 123,140, a 34.9% margin. Data compression shows a 27.1% lead for the 8940HX (650,984 versus 474,501), and random string sorting is 34% ahead (75,381 versus 49,764). Floating-point math also favors the 8940HX: 113,921 versus 81,998, a 28% gap.

The Ryzen 7 9850X3D, by contrast, wins decisively in single-threaded and latency-sensitive tests. PassMark single-thread shows 4,704 versus 3,874, a 21.4% advantage. Cinebench R23 single-core is 2,228 versus 1,917, a 16.2% lead, and Cinebench R15 single-core is 343 versus 292, a 17.5% margin. The largest single delta in either direction belongs to the 9850X3D in PassMark physics: 4,171 versus 2,104, a 98.2% advantage. PassMark prime numbers also favor the 9850X3D: 435 versus 251, a 73.3% lead.

The 8940HX also wins data encryption (39,318 versus 22,856, a 41.9% gap) and extended instructions (47,802 versus 39,272, a 17.8% gap). PassMark multi-thread goes to the 8940HX at 49,731 versus 41,318, a 16.9% margin, though this is one of the smaller multi-thread deltas in the set.

Architecture Differences

The two processors belong to different generations and use different manufacturing nodes. The Ryzen 7 9850X3D is a desktop part from the 9000 series, built on Zen 5 architecture with the Granite Ridge codename. It uses TSMC's 4 nm process and integrates 8,315 million transistors on a 70.6 mm² die. The Ryzen 9 8940HX is a mobile part from the 8000 series, built on Zen 4 architecture with the Dragon Range codename. It uses TSMC's 5 nm process and integrates 13,140 million transistors across a dual-die design measuring 2x 71 mm².

Core counts differ substantially. The 9850X3D has 8 cores and 16 threads, while the 8940HX has 16 cores and 32 threads. Clock speeds favor the desktop chip: the 9850X3D runs at a 4.70 GHz base and 5.60 GHz boost, compared to 2.40 GHz base and 5.30 GHz boost for the 8940HX. The 9850X3D also has a much higher thermal design power at 120 watts versus 55 watts for the mobile part.

Cache configurations diverge as well. The 9850X3D has 80 KB of L1 per core, 1 MB of L2 per core, and 96 MB of shared L3. The 8940HX has 64 KB of L1 per core, 1 MB of L2 per core, and 64 MB of L3. Both support DDR5 memory in dual-channel mode, though the 9850X3D has a higher memory bandwidth rating at 89.6 GB/s versus 83.2 GB/s for the 8940HX. The 9850X3D supports ECC memory; the 8940HX does not. The desktop part provides Gen 5 PCIe with 24 CPU lanes, while the mobile part provides Gen 5 PCIe with 28 CPU lanes.

The integrated graphics differ: the 9850X3D uses Radeon Graphics, while the 8940HX uses Radeon 610M. The 9850X3D fits the AMD Socket AM5; the 8940HX uses AMD Socket FL1. Both have unlocked multipliers. The 9850X3D was released in January 2026 with a launch MSRP of $499; the 8940HX was released in April 2025.

Where Each One Wins

The Ryzen 9 8940HX is the multi-threaded workload champion in this comparison. Its 16 cores and 32 threads translate directly into large leads across Cinebench multi-core tests, integer math, floating-point math, data compression, encryption, and random string sorting. The data suggests it handles heavily parallel tasks with a consistent 17% to 42% advantage over the 9850X3D. The 8940HX also ranks at the 95th percentile among all CPUs in the database, compared to the 92nd percentile for the 9850X3D. Its average benchmark score of 81,103 versus 58,386 for the 9850X3D reflects the overall throughput advantage of the higher core count.

The Ryzen 7 9850X3D wins where single-thread responsiveness and specific computational patterns matter. The 98.2% lead in PassMark physics is striking, and the 73.3% lead in prime number finding indicates strong performance in workloads that depend on per-core efficiency and cache behavior. The 21.4% single-thread advantage and 16.2% to 17.5% Cinebench single-core leads confirm that the Zen 5 architecture at higher clock speeds delivers better per-thread performance. The 96 MB of shared L3 cache likely contributes to the physics and prime number results, as those workloads benefit from larger on-die data residency.

Benchmark results indicate the 8940HX is the better choice for rendering, scientific computing, data processing, and any workload that can use more than 8 cores effectively. The 9850X3D is the better choice for single-threaded applications, physics simulation, and workloads that show sensitivity to cache capacity rather than raw core count.

FAQ

Q: Which processor has the higher single-core score?

A: The AMD Ryzen 7 9850X3D. It scores 4,704 in PassMark single-thread, 2,228 in Cinebench R23 single-core, and 343 in Cinebench R15 single-core, compared to 3,874, 1,917, and 292 for the AMD Ryzen 9 8940HX.

Q: How large is the multi-core gap in Cinebench R23?

A: The Ryzen 9 8940HX leads by 29.9%, scoring 32,521 versus 22,807 for the Ryzen 7 9850X3D.

Q: What is the biggest single benchmark delta between the two?

A: The Ryzen 7 9850X3D leads PassMark physics by 98.2%, scoring 4,171 versus 2,104 for the Ryzen 9 8940HX.

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

A: The Ryzen 7 9850X3D has a 120 watt TDP, while the Ryzen 9 8940HX has a 55 watt TDP.

Q: Which processor supports ECC memory?

A: The Ryzen 7 9850X3D supports ECC memory. The Ryzen 9 8940HX does not.

Q: How does the average benchmark score compare?

A: The Ryzen 9 8940HX has an average benchmark score of 81,103, while the Ryzen 7 9850X3D has an average of 58,386. The 8940HX sits at the 95th percentile of all CPUs, the 9850X3D at the 92nd.

The Verdict

The data supports a straightforward split based on workload type. The AMD Ryzen 9 8940HX delivers substantially higher throughput in multi-threaded applications, with wins in 9 of the 15 head-to-head benchmarks and a 28% higher average benchmark score overall. Its 16 cores and 32 threads make it the stronger choice for parallel compute tasks, despite the lower base clock and older Zen 4 architecture.

The AMD Ryzen 7 9850X3D is the better option for single-threaded performance and specific latency-sensitive workloads. Its 21.4% single-thread lead, 98.2% physics advantage, and 73.3% prime number advantage are substantial margins that reflect the combination of Zen 5 architecture, higher boost clock, and larger L3 cache. The 96 MB of shared L3 gives it a clear edge in cache-dependent tasks.

For users running heavily threaded workloads such as rendering, compilation, or data processing, the recorded data points to the Ryzen 9 8940HX. For users prioritizing per-core speed, physics simulation, or workloads that exploit large caches, the Ryzen 7 9850X3D shows the stronger results. The choice between them depends entirely on whether the workload scales with core count or with single-thread efficiency.

Specification Differences

| Specification | AMD Ryzen 7 9850X3D | AMD Ryzen 9 8940HX |

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

| Cores | 8 | 16 |

| Threads | 16 | 32 |

| Base clock | 4.70 GHz | 2.40 GHz |

| Boost clock | 5.60 GHz | 5.30 GHz |

| TDP | 120 W | 55 W |

| Socket | AMD Socket AM5 | AMD Socket FL1 |

| Architecture | Zen 5 | Zen 4 |

| Codename | Granite Ridge | Dragon Range |

| Process node | 4 nm (TSMC) | 5 nm (TSMC) |

| Transistors | 8,315 million | 13,140 million |

| Die size | 70.6 mm² | 2x 71 mm² |

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

| L2 cache | 1 MB (per core) | 1 MB (per core) |

| L3 cache | 96 MB (shared) | 64 MB |

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

| ECC memory | Supported | Not supported |

| PCIe | Gen 5, 24 lanes (CPU only) | Gen 5, 28 lanes (CPU only) |

| Integrated graphics | Radeon Graphics | Radeon 610M |

| Market segment | Desktop | Mobile |

| Release date | 2026-01-28 | 2025-04-22 |