AMD Ryzen 9 8940HX vs AMD Ryzen AI 7 450G Comparison

The AMD Ryzen 9 8940HX and the AMD Ryzen AI 7 450G represent two very different philosophies within AMD’s mobile and desktop lineups. The Ryzen 9 8940HX is a high-core-count Dragon Range part designed for maximum multi-threaded throughput, while the Ryzen AI 7 450G is a newer, denser Gorgon Point chip with a hybrid Zen 5 / Zen 5c configuration. The benchmark data shows a near-total sweep for the 16-core part, but the single-thread result for the 8-core chip reveals a significant architectural shift. The following analysis uses the recorded database measurements to break down exactly where each processor dominates and what the numbers imply.

Head-to-Head Benchmarks

The head-to-head results are decisively lopsided. The AMD Ryzen 9 8940HX wins 9 of the 11 recorded comparisons, with the AMD Ryzen AI 7 450G taking only the two single-thread tests. The largest margin of victory for the Ryzen 9 8940HX comes in the Passmark find prime numbers test, where it scores 251 against 87, a delta of 188.5 percent. That is not a marginal advantage; it is a nearly threefold difference in a workload that stresses integer-heavy repetition and branch prediction. The Ryzen 9 8940HX also demonstrates a 107.6 percent lead in data encryption, scoring 39,318 versus 18,937, which indicates a substantial advantage in cryptographic throughput.

The multi-threaded workloads consistently favor the 16-core, 32-thread configuration. In Passmark integer math, the Ryzen 9 8940HX scores 189,221 against 99,732, a delta of 89.7 percent. Floating point math shows a 78.9 percent advantage, with scores of 113,921 and 63,683 respectively. The multithread benchmark itself shows the Ryzen 9 8940HX at 49,731 versus 30,422, a 63.5 percent lead. Random string sorting, a test sensitive to memory latency and cache behavior, sees the Ryzen 9 8940HX score 75,381 against 42,663, a 76.7 percent delta. Extended instructions also favor the Ryzen 9 8940HX, with 47,802 versus 28,223, a 69.4 percent advantage. Even the physics simulation test, which often scales with core count, shows a 46.1 percent lead for the Ryzen 9 8940HX: 2,104 versus 1,440.

The only wins for the AMD Ryzen AI 7 450G come in the Passmark single-thread and singlethread tests, which are the same metric recorded twice. Here the Ryzen AI 7 450G scores 4,309 against 3,874, a 10.1 percent advantage. This is a meaningful result because it shows that the newer Zen 5 architecture, even with a lower boost clock of 5.10 GHz compared to 5.30 GHz, can outpace the Zen 4 part in single-threaded execution. The Ryzen 9 8940HX still holds a 95th percentile ranking across all CPUs, while the Ryzen AI 7 450G sits at the 93rd percentile. The average benchmark scores reflect the overall dominance: 81,103 for the Ryzen 9 8940HX versus 63,331 for the Ryzen AI 7 450G. The nearest rivals in the database for the Ryzen 9 8940HX include the Intel Xeon w5-3535X at 81,115 and the Intel Core i9-14900KS at 81,127, both with a delta of 0 percent. The Ryzen AI 7 450G sits near the Intel Core Ultra 7 265HX at 63,173, a 0.2 percent delta, and slightly behind the AMD Ryzen AI Max PRO 390 at 63,765, which is a negative 0.7 percent delta.

FAQ

Q: Which processor has the higher single-thread benchmark score?

A: The AMD Ryzen AI 7 450G scores 4,309 in the Passmark single-thread test, which is 10.1 percent higher than the AMD Ryzen 9 8940HX at 3,874.

Q: How much faster is the Ryzen 9 8940HX in multi-threaded workloads?

A: The Ryzen 9 8940HX leads by 63.5 percent in the Passmark multithread test, scoring 49,731 versus 30,422. Its lead reaches 89.7 percent in integer math and 78.9 percent in floating point math.

Q: What is the core and thread configuration difference?

A: The Ryzen 9 8940HX has 16 cores and 32 threads, while the Ryzen AI 7 450G has 8 cores and 16 threads.

Q: Which processor uses a smaller manufacturing process?

A: The Ryzen AI 7 450G is built on a 4 nm process, while the Ryzen 9 8940HX uses a 5 nm process. Both are fabricated by TSMC.

Q: Are there differences in memory support?

A: Yes. The Ryzen 9 8940HX supports DDR5 only, while the Ryzen AI 7 450G supports both DDR5 and LPDDR5X. The Ryzen AI 7 450G also has a higher recorded memory bandwidth at 89.6 GB/s versus 83.2 GB/s.

Q: Which processor has the larger L3 cache?

A: The Ryzen 9 8940HX has 64 MB of L3 cache, while the Ryzen AI 7 450G has only 8 MB.

Architecture Differences

The two processors come from entirely different architectural lineages. The Ryzen 9 8940HX is based on Zen 4 and belongs to the Dragon Range codename family within the 8000 series. The Ryzen AI 7 450G uses a hybrid configuration of Zen 5 and Zen 5c cores, under the Gorgon Point codename and the Ryzen AI 400 generation. This is a fundamental split: the older part relies on a homogeneous set of full-size Zen 4 cores, while the newer part mixes performance and density-optimized cores.

The manufacturing process differs as well. The Ryzen 9 8940HX is built on a 5 nm TSMC node and has a die size of 2x 71 mm², with 13,140 million transistors. The Ryzen AI 7 450G moves to a 4 nm TSMC node and uses a single 195 mm² die. The transistor count for the Ryzen AI 7 450G is not recorded in the database, but the smaller process node and larger die area suggest a different integration strategy. The cache hierarchy also shows a major divergence. The Ryzen 9 8940HX has 64 KB of L1 per core, 1 MB of L2 per core, and a 64 MB L3 cache. The Ryzen AI 7 450G has 80 KB of L1 per core, 1 MB of L2 per core, but only 8 MB of L3. The larger L3 cache on the Ryzen 9 8940HX is likely a key factor in its strong performance in random string sorting and data compression, where it leads by 76.7 percent and 61.6 percent respectively.

The integrated graphics also differ. The Ryzen 9 8940HX uses the Radeon 610M, while the Ryzen AI 7 450G uses the Radeon 860M. Despite the Ryzen 9 8940HX having more CPU cores, the Ryzen AI 7 450G carries a newer GPU part. The socket types are different as well: the Ryzen 9 8940HX uses AMD Socket FL1, while the Ryzen AI 7 450G uses AMD Socket AM5. This affects platform compatibility, though both processors have an unlocked multiplier.

Specification Differences

The core and thread counts are the most obvious difference: 16 cores and 32 threads for the Ryzen 9 8940HX versus 8 cores and 16 threads for the Ryzen AI 7 450G. Base clocks differ slightly, with the Ryzen 9 8940HX at 2.40 GHz and the Ryzen AI 7 450G at 2.00 GHz. Boost clocks favor the Ryzen 9 8940HX at 5.30 GHz compared to 5.10 GHz for the Ryzen AI 7 450G, yet the single-thread benchmark still goes to the Ryzen AI 7 450G. The thermal design power is higher for the Ryzen AI 7 450G at 65 watts versus 55 watts for the Ryzen 9 8940HX, despite the latter having twice as many cores.

Memory support shows a split. The Ryzen 9 8940HX supports only DDR5, while the Ryzen AI 7 450G supports both DDR5 and LPDDR5X. The recorded memory bandwidth is higher for the Ryzen AI 7 450G at 89.6 GB/s versus 83.2 GB/s. ECC memory is supported by the Ryzen AI 7 450G but not by the Ryzen 9 8940HX. PCIe connectivity also differs: the Ryzen 9 8940HX offers Gen 5 with 28 lanes, while the Ryzen AI 7 450G offers Gen 4 with 12 lanes. The market segment fields list the Ryzen 9 8940HX as mobile and the Ryzen AI 7 450G as desktop. The Ryzen 9 8940HX has a release date of 2025-04-22, while the Ryzen AI 7 450G has a release date of 2026-02-28. Neither processor has a recorded launch MSRP in the database.

The Verdict

The recorded data presents a clear split between raw throughput and per-core efficiency. The Ryzen 9 8940HX is the dominant processor for any workload that scales with core count or benefits from a large L3 cache. Its 95th percentile ranking and average benchmark score of 81,103 place it among the top-tier CPUs in the database, directly alongside the Intel Xeon w5-3535X and Intel Core i9-14900KS. The Ryzen AI 7 450G, with its 93rd percentile and 63,331 average score, is a capable chip but sits in a different performance class.

The single-thread result complicates a simple verdict. The Ryzen AI 7 450G wins the single-thread test by 10.1 percent despite a lower boost clock, which indicates the Zen 5 / Zen 5c architecture has a higher instructions-per-clock capability than the older Zen 4 design. This means users who prioritize lightly threaded applications, where a single core does most of the work, would see better responsiveness from the Ryzen AI 7 450G. However, the Ryzen 9 8940HX still holds the higher boost clock at 5.30 GHz, and its overall multi-threaded dominance is so large that it defines the product’s identity.

The Ryzen 9 8940HX also has the advantage of Gen 5 PCIe connectivity with 28 lanes, which is a significant feature for high-bandwidth peripherals. The Ryzen AI 7 450G counters with ECC memory support and a newer 4 nm process, but its PCIe Gen 4 with 12 lanes is a step down. For users who need maximum parallel processing power, the Ryzen 9 8940HX is the clear choice based on the numbers. For users who need the fastest possible single-threaded execution and prefer a newer architecture, the Ryzen AI 7 450G has a specific, if narrow, advantage.

Where Each One Wins

The Ryzen 9 8940HX wins in every multi-threaded benchmark category recorded. It leads by 61.6 percent in data compression, 107.6 percent in data encryption, 69.4 percent in extended instructions, 188.5 percent in prime number finding, 78.9 percent in floating point math, 89.7 percent in integer math, 63.5 percent in multithread, 46.1 percent in physics, and 76.7 percent in random string sorting. These results point to workloads like video rendering, scientific computation, database processing, and software compilation, where the 16-core, 32-thread configuration with 64 MB of L3 cache provides a massive parallel advantage. The physics score of 2,104 versus 1,440, a 46.1 percent lead, also suggests better performance in simulation and gaming physics workloads.

The Ryzen AI 7 450G wins only the single-thread and singlethread benchmarks, scoring 4,309 versus 3,874. This 10.1 percent lead indicates a stronger per-core performance profile, which matters for applications like web browsing, office productivity, and lightly threaded legacy software. The higher memory bandwidth of 89.6 GB/s and support for LPDDR5X could also benefit integrated graphics workloads, though the database does not include GPU-specific benchmarks. The Ryzen AI 7 450G also has a smaller L3 cache at 8 MB, which may limit its performance in cache-sensitive tasks, but its newer 4 nm process and hybrid Zen 5 / Zen 5c core design suggest better power efficiency per core.

The data does not show a single winner across all scenarios. The Ryzen 9 8940HX dominates the aggregate average score and 9 of 11 head-to-head tests, while the Ryzen AI 7 450G claims the single-thread crown and offers a newer platform with ECC support and faster memory bandwidth. The choice depends entirely on whether the workload is parallel or serial. The benchmark scores confirm that the Ryzen 9 8940HX is the throughput king, while the Ryzen AI 7 450G is the per-core efficiency champion.