AMD Ryzen 9 7940HX vs AMD Ryzen AI 7 450 Comparison

Head-to-Head Benchmarks

The recorded data shows a decisive overall advantage for the AMD Ryzen 9 7940HX across the shared benchmark suite. Of the 13 common tests, the Ryzen 9 7940HX wins 12, while the AMD Ryzen AI 7 450 takes a single victory. The average benchmark score for the Ryzen 9 7940HX is 69,875, compared to 39,485 for the Ryzen AI 7 450, a difference of roughly 77%. The Ryzen 9 7940HX also sits at the 94th percentile among all CPUs in the database, while the Ryzen AI 7 450 sits at the 87th percentile.

The largest margin comes in the passmark_find_prime_numbers test, where the Ryzen 9 7940HX scores 273 against 89 for the Ryzen AI 7 450, a delta of 206.7%. This indicates a massive advantage in integer-heavy, prime-number computation workloads. The passmark_data_encryption test shows a similar pattern: 41,974 versus 16,247, a 158.3% advantage for the Ryzen 9 7940HX. Encryption tasks often scale with core count and cache size, and the data supports that interpretation here.

Multi-threaded performance is where the Ryzen 9 7940HX establishes its clearest dominance. In cinebench_cinebench_r23_multicore, the Ryzen 9 7940HX scores 29,400 against 18,316 for the Ryzen AI 7 450, a 60.5% lead. The passmark_multithread test shows a 101.9% advantage (53,204 versus 26,350), meaning the Ryzen 9 7940HX more than doubles the output. The passmark_integer_math test shows a 129.2% delta (202,883 versus 88,531), and passmark_floating_point_math shows 121,383 versus 54,447, a 122.9% lead. Data compression scores 693,741 versus 315,906, a 119.6% advantage, while random string sorting shows 81,775 versus 35,648, a 129.4% delta.

The single-threaded picture is closer. In cinebench_cinebench_r23_singlecore, the Ryzen AI 7 450 wins with 2,038 against 1,807 for the Ryzen 9 7940HX, a delta of -11.3%. However, in passmark_single_thread, the Ryzen 9 7940HX edges ahead with 3,942 versus 3,901, a narrow 1.1% margin. The passmark_physics test also goes to the Ryzen 9 7940HX with 2,297 versus 1,578, a 45.6% lead. The passmark_extended_instructions test shows 51,029 versus 22,400, a 127.8% advantage for the Ryzen 9 7940HX.

Where Each One Wins

The Ryzen 9 7940HX wins every multi-threaded workload in the shared test set. This includes cinebench_r23_multicore, passmark_multithread, integer math, floating-point math, data compression, data encryption, extended instructions, prime number finding, random string sorting, and physics. These are workloads that benefit from high core counts, large caches, and sustained throughput. The 16-core, 32-thread configuration with 64 MB of L3 cache is the clear driver here.

The Ryzen AI 7 450 wins only in cinebench_cinebench_r23_singlecore, where it scores 2,038 versus 1,807. This indicates a per-core efficiency advantage in that particular render benchmark. The Ryzen AI 7 450 uses the Zen 5 architecture, which is newer than the Zen 4 architecture in the Ryzen 9 7940HX. The higher boost clock of 5.10 GHz on the Ryzen AI 7 450, combined with the newer architecture, explains this single-threaded edge.

However, the passmark_single_thread test tells a slightly different story. There, the Ryzen 9 7940HX scores 3,942 versus 3,901 for the Ryzen AI 7 450, a 1.1% margin. This suggests that the single-threaded advantage of the Ryzen AI 7 450 is workload-specific rather than universal. In some single-threaded tasks, the Ryzen 9 7940HX remains competitive or slightly ahead.

Architecture Differences

The two processors come from different architectural generations. The AMD Ryzen 9 7940HX is part of the 7000 series, using the Zen 4 architecture with the Dragon Range codename. It is built on a 5 nm process at TSMC, with a die size of 2x 71 mm² and 13,140 million transistors. The Ryzen AI 7 450 uses the Zen 5 architecture (with Zen 5c cores) under the Gorgon Point codename, built on a 4 nm process at TSMC with a die size of 195 mm². The transistor count for the Ryzen AI 7 450 is not recorded in the database.

The core configurations differ substantially. The Ryzen 9 7940HX has 16 cores and 32 threads, while the Ryzen AI 7 450 has 8 cores and 16 threads. The Ryzen 9 7940HX has a base clock of 2.40 GHz and a boost clock of 5.20 GHz, while the Ryzen AI 7 450 has a base clock of 2.00 GHz and a boost clock of 5.10 GHz. The thermal design power (TDP) also differs: 55 watts for the Ryzen 9 7940HX versus 28 watts for the Ryzen AI 7 450. The socket types are different as well: AMD Socket FL1 for the Ryzen 9 7940HX and AMD Socket FP8 for the Ryzen AI 7 450.

Cache configurations show a significant divergence. The Ryzen 9 7940HX has 64 KB of L1 cache per core, 1 MB of L2 cache per core, and 64 MB of L3 cache. The Ryzen AI 7 450 has 80 KB of L1 cache per core, 1 MB of L2 cache per core, but only 8 MB of L3 cache. The larger L3 cache on the Ryzen 9 7940HX is a major factor in its multi-threaded performance advantage. Neither processor features 3D V-Cache.

Memory support also differs. The Ryzen 9 7940HX supports DDR5 with dual-channel memory and a bandwidth of 83.2 GB/s. The Ryzen AI 7 450 supports DDR5 and LPDDR5X, also dual-channel, with a bandwidth of 89.6 GB/s. The Ryzen AI 7 450 has a slightly higher memory bandwidth. ECC memory is supported on the Ryzen AI 7 450 but not on the Ryzen 9 7940HX. PCIe support differs as well: the Ryzen 9 7940HX uses Gen 5 with 28 lanes (CPU only), while the Ryzen AI 7 450 uses Gen 4 with 16 lanes (CPU only). The integrated graphics also differ: the Ryzen 9 7940HX uses Radeon 610M, while the Ryzen AI 7 450 uses Radeon 860M.

The Ryzen 9 7940HX has an unlocked multiplier, while the Ryzen AI 7 450 does not. The release dates are recorded as January 16, 2024 for the Ryzen 9 7940HX and January 4, 2026 for the Ryzen AI 7 450. Both processors are marked as Active in production status and belong to the Mobile market segment. Neither has a recorded launch MSRP.

The Verdict

The data points to a clear split in intended use cases. The AMD Ryzen 9 7940HX is the stronger processor for multi-threaded workloads. Its 16 cores, 32 threads, and 64 MB of L3 cache deliver leads of 60.5% in cinebench_r23_multicore and 101.9% in passmark_multithread over the Ryzen AI 7 450. For tasks involving data compression, encryption, integer or floating-point math, and prime number finding, the Ryzen 9 7940HX is ahead by margins ranging from 119.6% to 206.7%. Any workload that scales across cores will favor the Ryzen 9 7940HX.

The AMD Ryzen AI 7 450 holds a narrower but real advantage in single-threaded render performance, as seen in cinebench_r23_singlecore with a score of 2,038 against 1,807, an 11.3% lead. Its newer Zen 5 architecture, 4 nm process, and higher boost clock of 5.10 GHz contribute to this result. However, the passmark_single_thread test shows the Ryzen 9 7940HX ahead by 1.1%, so the single-threaded edge is not universal.

Users who prioritize multi-core throughput, heavy computation, or content creation workloads that use all threads should select the Ryzen 9 7940HX. Users who need a more power-efficient processor, as indicated by the 28-watt TDP compared to 55 watts, and who value the newest architecture and slightly higher memory bandwidth, may prefer the Ryzen AI 7 450. The Ryzen AI 7 450 also supports ECC memory and offers faster integrated graphics (Radeon 860M versus Radeon 610M), though the database does not include graphics benchmarks for either processor.

The percentile rankings support this interpretation. The Ryzen 9 7940HX at the 94th percentile among all CPUs sits notably higher than the Ryzen AI 7 450 at the 87th percentile. The nearest rivals for each processor also reflect their positioning. The Ryzen 9 7940HX is compared against desktop-class parts like the AMD Ryzen 9 7950X (avg score 69,515, 0.5% delta) and the Intel Core i7-14700KF (avg score 70,163, -0.4% delta). The Ryzen AI 7 450 sits alongside mobile and mixed parts like the AMD Ryzen 7 PRO 8845HS (avg score 39,325, 0.4% delta) and the AMD EPYC 4245P (avg score 39,215, 0.7% delta). This places the Ryzen 9 7940HX in a higher performance tier overall.

FAQ

Q: Which processor wins more benchmarks in the head-to-head comparison?

A: The AMD Ryzen 9 7940HX wins 12 of the 13 shared benchmarks. The AMD Ryzen AI 7 450 wins only cinebench_cinebench_r23_singlecore.

Q: What is the biggest performance difference between the two processors?

A: The largest delta is in passmark_find_prime_numbers, where the Ryzen 9 7940HX scores 273 versus 89 for the Ryzen AI 7 450, a 206.7% advantage.

Q: How do the two processors compare in multi-threaded rendering?

A: In cinebench_cinebench_r23_multicore, the Ryzen 9 7940HX scores 29,400 while the Ryzen AI 7 450 scores 18,316, giving the Ryzen 9 7940HX a 60.5% lead.

Q: Does the Ryzen AI 7 450 have any single-threaded advantages?

A: In cinebench_cinebench_r23_singlecore, the Ryzen AI 7 450 scores 2,038 versus 1,807 for the Ryzen 9 7940HX, an 11.3% advantage. However, in passmark_single_thread, the Ryzen 9 7940HX leads by 1.1% (3,942 versus 3,901).

Q: What are the core and thread counts for each processor?

A: The Ryzen 9 7940HX has 16 cores and 32 threads. The Ryzen AI 7 450 has 8 cores and 16 threads.

Q: Which processor supports ECC memory?

A: The AMD Ryzen AI 7 450 supports ECC memory. The AMD Ryzen 9 7940HX does not.

Specification Differences

| Specification | AMD Ryzen 9 7940HX | AMD Ryzen AI 7 450 |

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

| Cores | 16 | 8 |

| Threads | 32 | 16 |

| Base Clock | 2.40 GHz | 2.00 GHz |

| Boost Clock | 5.20 GHz | 5.10 GHz |

| TDP | 55 W | 28 W |

| Socket | AMD Socket FL1 | AMD Socket FP8 |

| Architecture | Zen 4 | Zen 5 |

| Codename | Dragon Range | Gorgon Point |

| Process Node | 5 nm | 4 nm |

| Die Size | 2x 71 mm² | 195 mm² |

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

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

| L3 Cache | 64 MB | 8 MB |

| Memory Support | DDR5 | DDR5, LPDDR5X |

| Memory Bandwidth | 83.2 GB/s | 89.6 GB/s |

| ECC Memory | No | Yes |

| PCIe | Gen 5, 28 Lanes (CPU only) | Gen 4, 16 Lanes (CPU only) |

| Integrated Graphics | Radeon 610M | Radeon 860M |

| Multiplier Unlocked | Yes | No |

| Release Date | January 16, 2024 | January 4, 2026 |

| Part Number | 100-000001486 | 100-000001868 |