AMD Ryzen 9 7940HX vs AMD Ryzen AI 5 435 Comparison

Where Each One Wins

The recorded data splits this matchup into two very different use-case profiles. The AMD Ryzen 9 7940HX wins 12 of the 13 head-to-head benchmarks, while the AMD Ryzen AI 5 435 takes a single narrow victory. That one win, however, is in single-core Cinebench R23, where the Ryzen AI 5 435 scores 1816 against 1807 for the 7940HX, a delta of just 0.5%. For workloads that depend on one lightly threaded task, the two processors are effectively interchangeable, with the newer Zen 5 core giving the smaller chip a hair of an edge.

Every other recorded comparison goes to the 7940HX, often by a substantial margin. The largest gap appears in PassMark find prime numbers, where the 7940HX leads by 370.7%. Data encryption shows a 277.8% advantage, integer math a 232.5% lead, and random string sorting a 228.5% edge. Extended instructions and data compression follow at 215.1% and 207.8% respectively. Floating point math sits at 198.8%, while multithreaded PassMark shows 180%. Cinebench R23 multicore rounds out the list with a 159.4% advantage. Even single-threaded PassMark, where the newer architecture could plausibly close the gap, still goes to the 7940HX by 5.6%, with scores of 3942 versus 3734.

The pattern is clear: the Ryzen 9 7940HX is the choice for heavily threaded, throughput-oriented work. The Ryzen AI 5 435 is competitive only in the narrow single-core Cinebench metric and otherwise trails across every recorded test. The data also places the two chips in different performance tiers. The 7940HX sits at the 94th percentile among all CPUs in the database, with an average benchmark score of 69875. The Ryzen AI 5 435 ranks at the 80th percentile with an average score of 28128. That gap of roughly 2.5 times in average score reinforces the split: one is a high-end mobile part, the other a mid-range option.

Architecture Differences

The two processors come from different generations and use different process nodes. The Ryzen 9 7940HX belongs to the 7000 series, built on Zen 4 architecture with the Dragon Range codename. It uses a 5 nm process from TSMC and packs 13,140 million transistors across a die size of 2x 71 mm². The Ryzen AI 5 435 is part of the Ryzen AI 400 series, using Zen 5 and Zen 5c cores under the Gorgon Point codename, manufactured on a 4 nm TSMC process. The database does not list transistor count or die size for the newer part.

Core counts differ sharply. The 7940HX provides 16 cores and 32 threads, while the Ryzen AI 5 435 provides 6 cores and 12 threads. Clock speeds also favor the larger chip: the 7940HX has a base clock of 2.40 GHz and a boost clock of 5.20 GHz, against 2.00 GHz base and 4.50 GHz boost for the Ryzen AI 5 435. The 7940HX carries a TDP of 55, while the Ryzen AI 5 435 is rated at 28, reflecting its lower power envelope.

Cache configurations show a different design philosophy. The 7940HX has 64 KB of L1 per core, 1 MB of L2 per core, and 64 MB of L3. The Ryzen AI 5 435 has a larger L1 at 80 KB per core, the same 1 MB of L2 per core, but only 4 MB of L3. That L3 deficit is significant for workloads with large working sets, and it helps explain why the 7940HX dominates in most throughput tests despite the newer core design in the smaller chip.

Memory support also differs. Both use dual-channel memory, but the 7940HX supports DDR5 with a recorded bandwidth of 83.2 GB/s, while the Ryzen AI 5 435 supports DDR5 and LPDDR5X with a higher bandwidth of 89.6 GB/s. The Ryzen AI 5 435 supports ECC memory; the 7940HX does not. PCIe connectivity goes the other way: the 7940HX uses Gen 5 with 28 CPU lanes, while the Ryzen AI 5 435 uses Gen 4 with 14 lanes.

The integrated graphics differ as well. The 7940HX pairs with a Radeon 610M, while the Ryzen AI 5 435 uses a Radeon 840M. The 7940HX has an unlocked multiplier, the Ryzen AI 5 435 does not. Sockets are different: the 7940HX uses AMD Socket FL1, the Ryzen AI 5 435 uses AMD Socket FP8. The 7940HX was released on 2024-01-16, while the Ryzen AI 5 435 has a release date of 2026-01-04. Both parts remain in active production.

Head-to-Head Benchmarks

The Cinebench R23 multicore test shows the scale of the gap. The 7940HX scores 29400 against 11333 for the Ryzen AI 5 435, a 159.4% lead. That result reflects the 16-core, 32-thread configuration against a 6-core, 12-thread part. In single-core Cinebench R23, the result flips by a hair: 1816 for the Ryzen AI 5 435 versus 1807 for the 7940HX, a 0.5% edge for the newer chip. This is the only recorded benchmark where the Ryzen AI 5 435 wins.

PassMark multithread shows the 7940HX at 53204 against 19000, a 180% advantage. PassMark single-thread is much closer: 3942 versus 3734, a 5.6% lead for the 7940HX. The same single-thread score appears twice in the database under slightly different test names, both confirming the same result.

Data compression favors the 7940HX at 693741 against 225374, a 207.8% lead. Data encryption shows 41974 versus 11110, a 277.8% gap. Extended instructions run 51029 against 16197, a 215.1% difference. Floating point math delivers 121383 versus 40627, a 198.8% edge. Integer math shows 202883 versus 61026, a 232.5% lead. Random string sorting lands at 81775 versus 24891, a 228.5% gap. The prime number test shows the largest proportional difference: 273 against 58, a 370.7% lead. Physics simulation scores 2297 versus 1075, a 113.7% advantage.

The nearest rival data puts both chips in context. The 7940HX has an average benchmark score of 69875, sitting within 0.7% of the Intel Core i7-14700K and within 0.2% of the AMD Ryzen 7 9700F, while trailing the Intel Core i7-14700KF by 0.4%. The Ryzen AI 5 435, with an average score of 28128, sits within 0.3% of the AMD Ryzen 5 PRO 8500GE and the AMD Ryzen 5 PRO 5655G, and within 0.2% of the Intel Core i5-14500T, while trailing the Intel Core i5-13490F by 0.2%. These figures indicate that each chip competes in a distinct performance class, with the 7940HX aligned to high-end desktop-class mobile parts and the Ryzen AI 5 435 aligned to efficient mid-range options.

FAQ

Q: Which processor is faster in single-core Cinebench R23?

A: The AMD Ryzen AI 5 435 scores 1816 versus 1807 for the AMD Ryzen 9 7940HX, a 0.5% advantage for the Ryzen AI 5 435.

Q: How large is the multicore performance gap?

A: In Cinebench R23 multicore, the Ryzen 9 7940HX scores 29400 against 11333 for the Ryzen AI 5 435, a 159.4% lead. PassMark multithread shows a 180% advantage at 53204 versus 19000.

Q: What is the core and thread difference?

A: The Ryzen 9 7940HX has 16 cores and 32 threads. The Ryzen AI 5 435 has 6 cores and 12 threads.

Q: How do the process nodes compare?

A: The Ryzen 9 7940HX uses a 5 nm TSMC process with Zen 4 architecture. The Ryzen AI 5 435 uses a 4 nm TSMC process with Zen 5 and Zen 5c cores.

Q: Which chip supports ECC memory?

A: The Ryzen AI 5 435 supports ECC memory. The Ryzen 9 7940HX does not.

Q: How do the average benchmark scores compare?

A: The Ryzen 9 7940HX has an average benchmark score of 69875 and sits at the 94th percentile. The Ryzen AI 5 435 has an average score of 28128 and sits at the 80th percentile.

The Verdict

The data supports a clear split based on workload type. The AMD Ryzen 9 7940HX is the stronger processor for multithreaded throughput, with a 159.4% lead in Cinebench R23 multicore, a 180% lead in PassMark multithread, and advantages of over 200% in data compression, extended instructions, integer math, random string sorting, and data encryption. Its 16 cores, 32 threads, 64 MB of L3 cache, and 5.20 GHz boost clock give it a decisive edge in rendering, compilation, and other parallel workloads. The 55 TDP and Gen 5 PCIe with 28 lanes also position it as a high-performance mobile part.

The AMD Ryzen AI 5 435 wins only the single-core Cinebench R23 test, and by just 0.5%. Its 6 cores, 12 threads, and 4 MB of L3 cache limit it in heavily threaded tasks, but its Zen 5 architecture, 4 nm process, and support for LPDDR5X memory with 89.6 GB/s bandwidth make it a more efficient option. It also supports ECC memory, which the 7940HX lacks. Its 28 TDP rating indicates a lower power envelope, and its Radeon 840M integrated graphics are a newer design than the Radeon 610M in the 7940HX.

For users prioritizing maximum multithreaded performance, the Ryzen 9 7940HX is the clear choice from the recorded data. For users who need a lighter, more efficient part with ECC support and competitive single-threaded Cinebench performance, the Ryzen AI 5 435 offers a narrower but real set of advantages. The two chips occupy different performance tiers, as shown by the 94th versus 80th percentile rankings and the 69875 versus 28128 average benchmark scores.