AMD Ryzen 9 8940HX vs AMD Ryzen AI 5 PRO 435G Comparison

The AMD Ryzen 9 8940HX and the AMD Ryzen AI 5 PRO 435G occupy distinct positions in the processor landscape. The Ryzen 9 8940HX is a 16-core, 32-thread mobile processor built on the Zen 4 architecture, while the Ryzen AI 5 PRO 435G is a 6-core, 12-thread desktop chip using a mix of Zen 5 and Zen 5c cores. Benchmark data records 11 wins for the Ryzen 9 8940HX and zero for the Ryzen AI 5 PRO 435G across all tested workloads. The Ryzen 9 8940HX delivers massive multi-threaded advantages, while the Ryzen AI 5 PRO 435G counters with a smaller footprint, a newer 4 nm process, and ECC memory support. The database places the Ryzen 9 8940HX in the 95th percentile of all CPUs, whereas the Ryzen AI 5 PRO 435G sits in the 87th percentile. The average benchmark score for the Ryzen 9 8940HX is 81103, compared to 40718 for the Ryzen AI 5 PRO 435G.

The Verdict

The recorded data splits these two processors by workload class and platform intent. The AMD Ryzen 9 8940HX is the clear choice for heavy parallel workloads. Its 16 cores and 32 threads generate a PassMark multithread score of 49731, which is 145.2% ahead of the Ryzen AI 5 PRO 435G’s 20285. For integer math, the Ryzen 9 8940HX scores 189221 versus 63707, a 197% lead. Floating point math shows a 161.9% advantage, with scores of 113921 against 43494. The Ryzen 9 8940HX also dominates in data compression (650984 vs 253484, up 156.8%) and data encryption (39318 vs 12111, up 224.6%). Anyone running rendering, simulation, or other highly threaded tasks should select the Ryzen 9 8940HX based on these margins.

The AMD Ryzen AI 5 PRO 435G wins no benchmark in this comparison, but the data still supports its use in a different context. It uses a 4 nm process versus 5 nm for the Ryzen 9 8940HX, and it is built for the AMD Socket AM5 desktop platform. It supports ECC memory, while the Ryzen 9 8940HX does not. It also carries a 65 W TDP versus 55 W for the mobile part, indicating it is designed for a socketed desktop system with potentially different cooling and power delivery. For workloads that need ECC reliability or a desktop socket, the Ryzen AI 5 PRO 435G is the only option of the two. For raw performance, the Ryzen 9 8940HX is the only option.

The single-thread gap is narrow. The Ryzen 9 8940HX scores 3874 in PassMark single-thread, while the Ryzen AI 5 PRO 435G scores 3829. That is a 1.2% difference, the smallest margin of any test in the database. The Ryzen 9 8940HX’s boost clock of 5.30 GHz helps here, though the Ryzen AI 5 PRO 435G still achieves a 4.50 GHz boost. Users whose primary workload is lightly threaded should not expect a dramatic difference between these two, based on the recorded data.

Architecture Differences

The Ryzen 9 8940HX belongs to the 8000 series and uses the Zen 4 architecture with the codename Dragon Range. It is manufactured on a 5 nm process at TSMC and contains 13,140 million transistors across a die size of 2x 71 mm². The Ryzen AI 5 PRO 435G is a Ryzen AI PRO 400 series part with the codename Gorgon Point, using a hybrid of Zen 5 and Zen 5c cores. Its manufacturing process is 4 nm, also at TSMC, though the database does not record transistor count or die size for this part.

Core and thread counts differ substantially. The Ryzen 9 8940HX has 16 cores and 32 threads, while the Ryzen AI 5 PRO 435G has 6 cores and 12 threads. Base clocks are 2.40 GHz for the Ryzen 9 8940HX and 2.00 GHz for the Ryzen AI 5 PRO 435G. Boost clocks are 5.30 GHz and 4.50 GHz, respectively. The L1 cache for the Ryzen 9 8940HX is 64 KB per core, and for the Ryzen AI 5 PRO 435G it is 80 KB per core. Both have 1 MB of L2 cache per core. The L3 cache is a major differentiator: 64 MB for the Ryzen 9 8940HX versus 4 MB for the Ryzen AI 5 PRO 435G.

Memory support is similar in type but different in capacity and error handling. Both support DDR5 and dual-channel memory. The Ryzen 9 8940HX has a memory bandwidth of 83.2 GB/s, while the Ryzen AI 5 PRO 435G has 89.6 GB/s. The Ryzen AI 5 PRO 435G supports ECC memory; the Ryzen 9 8940HX does not. PCIe connectivity also differs: the Ryzen 9 8940HX uses Gen 5 with 28 lanes (CPU only), while the Ryzen AI 5 PRO 435G uses Gen 4 with 10 lanes (CPU only).

The integrated graphics are different as well. The Ryzen 9 8940HX pairs with the Radeon 610M, while the Ryzen AI 5 PRO 435G uses the Radeon 840M. The Ryzen 9 8940HX is an unlocked multiplier part, whereas the Ryzen AI 5 PRO 435G has a locked multiplier. The Ryzen 9 8940HX uses the AMD Socket FL1, and the Ryzen AI 5 PRO 435G uses the AMD Socket AM5. The market segment for the Ryzen 9 8940HX is mobile, and for the Ryzen AI 5 PRO 435G it is desktop. Both processors are listed as active in production. The Ryzen 9 8940HX’s release date is recorded as 2025-04-22, and the Ryzen AI 5 PRO 435G’s release date is 2026-03-01.

Head-to-Head Benchmarks

The largest win for the Ryzen 9 8940HX appears in the PassMark find prime numbers test. The Ryzen 9 8940HX scores 251, while the Ryzen AI 5 PRO 435G scores 55. That is a 356.4% advantage. This test is highly sensitive to core count and memory latency, and the Ryzen 9 8940HX’s 64 MB of L3 cache likely contributes to the result.

Data encryption shows a 224.6% lead for the Ryzen 9 8940HX, with scores of 39318 versus 12111. Integer math follows at 197% (189221 vs 63707). Random string sorting gives the Ryzen 9 8940HX a 175% edge (75381 vs 27407). Floating point math is 161.9% ahead (113921 vs 43494). Extended instructions show a 155.7% advantage (47802 vs 18697). Data compression is up 156.8% (650984 vs 253484). Multithread performance is 145.2% higher (49731 vs 20285). Physics simulation shows a 110.6% lead (2104 vs 999).

The narrowest margin is in single-thread performance. The Ryzen 9 8940HX scores 3874, and the Ryzen AI 5 PRO 435G scores 3829, a 1.2% difference. This indicates that per-core IPC is close, despite the architectural differences. The Ryzen AI 5 PRO 435G’s newer Zen 5 and Zen 5c core design narrows the gap in lightly threaded work, but the Ryzen 9 8940HX still leads in every recorded test.

The database shows 11 wins for the Ryzen 9 8940HX and 0 wins for the Ryzen AI 5 PRO 435G. The average benchmark score of 81103 for the Ryzen 9 8940HX places it near the Intel Xeon w5-3535X (81115) and Intel Core i9-14900KS (81127), with a 0% difference in both cases. It sits 0.4% above the AMD Ryzen AI Max+ PRO 395 (80762) and 0.5% above the Intel Xeon 638 (80723). The Ryzen AI 5 PRO 435G, with an average score of 40718, is 0.2% above the Intel Xeon 6357P (40630), 0.3% above the Intel Core 5 223PE (40585), 0.4% above the Intel Core 7 253PE (40557), and 0.5% above the Intel Core Ultra X7 368H (40518). These rival comparisons show that each processor is competitive within its own performance tier, but the two tiers are far apart.

FAQ

Q: Which processor has more cores and threads?

A: The AMD Ryzen 9 8940HX has 16 cores and 32 threads. The AMD Ryzen AI 5 PRO 435G has 6 cores and 12 threads.

Q: What is the performance difference in single-thread tests?

A: The Ryzen 9 8940HX scores 3874 in PassMark single-thread, and the Ryzen AI 5 PRO 435G scores 3829. The Ryzen 9 8940HX leads by 1.2%.

Q: Does the Ryzen AI 5 PRO 435G support ECC memory?

A: Yes, the Ryzen AI 5 PRO 435G supports ECC memory. The Ryzen 9 8940HX does not.

Q: How do the memory bandwidth figures compare?

A: The Ryzen 9 8940HX has a memory bandwidth of 83.2 GB/s, while the Ryzen AI 5 PRO 435G has 89.6 GB/s. Both support DDR5 and dual-channel memory.

Q: What are the process nodes for these two processors?

A: The Ryzen 9 8940HX uses a 5 nm process at TSMC. The Ryzen AI 5 PRO 435G uses a 4 nm process, also at TSMC.

Q: Which processor has the larger L3 cache?

A: The Ryzen 9 8940HX has 64 MB of L3 cache. The Ryzen AI 5 PRO 435G has 4 MB of L3 cache.

Q: What sockets do these processors use?

A: The Ryzen 9 8940HX uses AMD Socket FL1. The Ryzen AI 5 PRO 435G uses AMD Socket AM5.

Where Each One Wins

The Ryzen 9 8940HX wins in every benchmark category recorded in the database. The most decisive victories are in find prime numbers (356.4% ahead), data encryption (224.6% ahead), and integer math (197% ahead). These are all heavily parallel workloads that scale with core count and cache size. The Ryzen 9 8940HX’s 16 cores, 32 threads, and 64 MB L3 cache provide a structural advantage that the 6-core Ryzen AI 5 PRO 435G cannot overcome. For multi-threaded rendering, code compilation, scientific computing, or any workload that uses all available threads, the Ryzen 9 8940HX is the stronger part according to the data.

The Ryzen 9 8940HX also wins in single-thread performance, but by only 1.2%. This means that for everyday desktop responsiveness or single-threaded applications, the difference is minimal. The Ryzen AI 5 PRO 435G’s Zen 5 and Zen 5c cores are efficient enough to nearly match the older Zen 4 design in single-core tests, despite a lower boost clock of 4.50 GHz versus 5.30 GHz.

The Ryzen AI 5 PRO 435G wins in areas not covered by raw performance benchmarks. It is a desktop part with a 65 W TDP, designed for the AM5 socket. It supports ECC memory, which is important for error-sensitive workloads such as file servers or data processing where memory corruption is unacceptable. It uses a newer 4 nm process, which indicates a more modern manufacturing node. Its memory bandwidth is slightly higher at 89.6 GB/s versus 83.2 GB/s. Its integrated graphics, the Radeon 840M, may offer different capabilities than the Radeon 610M in the Ryzen 9 8940HX, though the database does not include graphics benchmarks for either part.

The Ryzen AI 5 PRO 435G also has a locked multiplier, meaning it is not intended for overclocking, while the Ryzen 9 8940HX has an unlocked multiplier. The Ryzen 9 8940HX is a mobile processor with a 55 W TDP, suited for high-performance laptops, while the Ryzen AI 5 PRO 435G is a desktop processor. The release dates differ, with the Ryzen 9 8940HX released on 2025-04-22 and the Ryzen AI 5 PRO 435G on 2026-03-01.

In practical terms, the Ryzen 9 8940HX is the performance leader across the board, with an average benchmark score of 81103 and a 95th percentile ranking. The Ryzen AI 5 PRO 435G, with an average score of 40718 and an 87th percentile ranking, occupies a lower performance tier but brings platform features such as ECC support and a desktop socket. The choice between them depends on whether the user needs maximum parallel throughput or a desktop platform with ECC memory. The data does not support the Ryzen AI 5 PRO 435G for performance-sensitive tasks, as it loses every benchmark by a wide margin.