AMD Ryzen 9 PRO 8945HS vs AMD Ryzen AI 5 PRO 435G Comparison

Head-to-Head Benchmarks

The recorded data shows a decisive overall performance advantage for the AMD Ryzen 9 PRO 8945HS across the entire benchmark suite. In the eleven direct comparisons available, the Ryzen 9 PRO 8945HS wins every single test, with the margins ranging from a narrow 2.4% lead to a massive 80.2% gap. This is not a close contest; it is a systematic beatdown in favor of the 8000 series part.

The largest single victory comes in the PassMark data encryption test, where the Ryzen 9 PRO 8945HS scores 21,820 against the Ryzen AI 5 PRO 435G's 12,111. That translates to an 80.2% advantage, which is the biggest delta recorded between these two processors. This suggests the Ryzen 9's architecture handles cryptographic workloads with far greater efficiency, a factor relevant for VPNs, disk encryption, and secure communications.

Another standout win is in the PassMark find prime numbers test. Here, the Ryzen 9 PRO 8945HS posts a score of 91 versus 55 for the Ryzen AI 5 PRO 435G, a 65.5% difference. This test is highly sensitive to raw integer throughput and cache hierarchy, indicating the Ryzen 9's larger L3 cache and higher clock speeds pay off in latency-bound loops.

The integer math test shows a 62.3% gap, with the Ryzen 9 PRO 8945HS scoring 103,390 compared to 63,707 for the Ryzen AI 5 PRO 435G. Similarly, random string sorting reveals a 63% advantage for the Ryzen 9 (44,668 vs. 27,407). These results point to a substantial difference in sustained multi-threaded integer performance, which is the backbone of general productivity work.

In floating-point math, the Ryzen 9 PRO 8945HS scores 63,490 versus 43,494 for the Ryzen AI 5 PRO 435G, a 46% lead. Extended instructions also favor the Ryzen 9 by 48.2% (27,714 vs. 18,697). The data compression test shows a 45.5% gap (368,884 vs. 253,484), which is relevant for archiving, backup, and database workloads.

The multi-threaded PassMark score, a broad indicator of overall parallel capability, gives the Ryzen 9 PRO 8945HS a 49.8% win (30,378 vs. 20,285). The physics test, which often reflects gaming and simulation workloads, shows a 43.1% advantage (1,430 vs. 999).

The only close result is in single-threaded performance. The PassMark single-thread score for the Ryzen 9 PRO 8945HS is 3,920, while the Ryzen AI 5 PRO 435G trails at 3,829, a mere 2.4% difference. This narrow margin suggests that for lightly-threaded tasks like web browsing, office documents, or older games that rely on one or two cores, the two chips are nearly indistinguishable in practical terms. The Ryzen AI 5 PRO 435G's newer Zen 5 architecture partially compensates for its lower 4.50 GHz boost clock against the Ryzen 9's 5.20 GHz boost clock, but not enough to overcome the clock deficit.

FAQ

Q: Which processor has the higher multi-threaded performance?

A: The AMD Ryzen 9 PRO 8945HS wins the PassMark multi-thread test with a score of 30,378, which is 49.8% higher than the 20,285 scored by the AMD Ryzen AI 5 PRO 435G.

Q: Is the single-threaded performance difference significant?

A: No, it is minor. The Ryzen 9 PRO 8945HS scores 3,920 in the PassMark single-thread test, just 2.4% ahead of the Ryzen AI 5 PRO 435G's 3,829. For everyday lightly-threaded applications, the experience will be similar.

Q: How do the core and thread counts compare?

A: The Ryzen 9 PRO 8945HS has 8 cores and 16 threads, while the Ryzen AI 5 PRO 435G has 6 cores and 12 threads. This 2-core and 4-thread difference contributes directly to the large multi-threaded benchmark gaps.

Q: Which processor has a higher boost clock?

A: The Ryzen 9 PRO 8945HS boosts up to 5.20 GHz, compared to the 4.50 GHz boost clock of the Ryzen AI 5 PRO 435G. The base clocks are also very different: 4.00 GHz for the Ryzen 9 versus 2.00 GHz for the Ryzen AI.

Q: What is the difference in the integrated graphics?

A: The Ryzen 9 PRO 8945HS features the Radeon 780M, while the Ryzen AI 5 PRO 435G comes with the Radeon 840M. The benchmark data does not include graphics tests, so the comparison is limited to the CPU's compute and memory capabilities.

Q: Which processor has a larger L3 cache?

A: The Ryzen 9 PRO 8945HS has 16 MB of shared L3 cache, while the Ryzen AI 5 PRO 435G has only 4 MB. This fourfold difference is a major factor in the Ryzen 9's wins in latency-sensitive tests like find prime numbers.

Where Each One Wins

The AMD Ryzen 9 PRO 8945HS is the clear winner in every measured benchmark category. Its dominance is most pronounced in heavy parallel workloads: data encryption (80.2% ahead), find prime numbers (65.5%), random string sorting (63%), and integer math (62.3%). These are the workloads that scale with core count, thread count, cache size, and sustained clock speeds. For tasks like video encoding, 3D rendering, software compilation, scientific simulation, and large-scale data processing, the Ryzen 9 PRO 8945HS is the far more capable processor.

The Ryzen AI 5 PRO 435G does not win any benchmark in the head-to-head data. Its only competitive area is single-threaded performance, where it trails by just 2.4%. This means for basic desktop responsiveness, single-threaded legacy applications, or simple scripting, the user experience will be effectively identical to the Ryzen 9. The Ryzen AI 5 PRO 435G also has a lower TDP of 65 watts compared to the Ryzen 9's 45 watts, which is a counterintuitive finding: the lower-tier chip actually draws more power according to the specification, though the benchmark data does not include power consumption measurements.

The Ryzen AI 5 PRO 435G is listed as a desktop segment processor, while the Ryzen 9 PRO 8945HS is a mobile part. This suggests the Ryzen AI 5 PRO 435G might be intended for compact desktop systems or all-in-one PCs, but in terms of raw compute throughput, it falls short in every recorded test.

Specification Differences

The two processors differ in almost every major specification. The Ryzen 9 PRO 8945HS has 8 cores and 16 threads, while the Ryzen AI 5 PRO 435G has 6 cores and 12 threads. Base clocks are 4.00 GHz versus 2.00 GHz, and boost clocks are 5.20 GHz versus 4.50 GHz, respectively.

The TDP is also different: the Ryzen 9 PRO 8945HS is rated at 45 watts, while the Ryzen AI 5 PRO 435G is rated at 65 watts. The sockets differ as well: the Ryzen 9 uses AMD Socket FP7, while the Ryzen AI 5 PRO uses AMD Socket AM5.

The cache configurations are distinct. The Ryzen 9 PRO 8945HS has 64 KB of L1 cache per core and 1 MB of L2 per core, with 16 MB of shared L3 cache. The Ryzen AI 5 PRO 435G has 80 KB of L1 per core and 1 MB of L2 per core, but only 4 MB of L3 cache. Interestingly, the Ryzen AI 5 PRO has larger L1 cache per core, yet the total L3 cache is a quarter of the Ryzen 9's.

PCIe lanes differ: the Ryzen 9 PRO 8945HS provides Gen 4 with 20 lanes (CPU only), while the Ryzen AI 5 PRO 435G provides Gen 4 with only 10 lanes (CPU only). This halves the available expansion bandwidth for GPUs, NVMe drives, or other peripherals.

The integrated graphics differ: Radeon 780M for the Ryzen 9 versus Radeon 840M for the Ryzen AI 5 PRO. Memory support is identical: both support DDR5, dual-channel, with 89.6 GB/s bandwidth, and both support ECC memory. Neither has an unlocked multiplier. The release dates are far apart: the Ryzen 9 PRO 8945HS launched in April 2024, while the Ryzen AI 5 PRO 435G is slated for March 2026.

Architecture Differences

The Ryzen 9 PRO 8945HS is built on the Zen 4 architecture, codenamed Hawk Point, and belongs to the Ryzen 9 generation of the 8000 series. The Ryzen AI 5 PRO 435G uses a hybrid of Zen 5 and Zen 5c cores, codenamed Gorgon Point, from the Ryzen AI PRO 400 series. Both are manufactured on a 4 nm process by TSMC, and both are active production parts.

The transistor count and die size are only listed for the Ryzen 9 PRO 8945HS: 25,000 million transistors on a 178 mm² die. No such data exists for the Ryzen AI 5 PRO 435G in the database. The Ryzen 9 also has a higher L1 cache per core (64 KB) compared to the Ryzen AI 5 PRO's 80 KB per core, which is a notable architectural shift toward larger per-core caches in the newer design.

The Ryzen AI 5 PRO 435G's Zen 5 / Zen 5c combination suggests a big.LITTLE-style approach with performance and efficiency cores, though the database does not specify the core distribution. The Ryzen 9 PRO 8945HS uses a uniform Zen 4 core layout. The newer architecture does help the Ryzen AI 5 PRO close the single-threaded gap to only 2.4%, despite a 0.70 GHz boost clock disadvantage, but it cannot overcome the deficit in core count and cache size.

The Ryzen AI 5 PRO 435G has no listed series name, while the Ryzen 9 PRO 8945HS is explicitly part of the 8000 series. The part numbers also differ: the Ryzen 9 has two variants (100-000001314 for FP7r2 and 100-000001386 for FP7), while the Ryzen AI 5 PRO has a single part number (100-000001783).

The Verdict

The data is unambiguous: the AMD Ryzen 9 PRO 8945HS is the superior processor for any compute-intensive workload. It wins all 11 head-to-head benchmarks, with an average benchmark score of 41,963 against the Ryzen AI 5 PRO 435G's 40,718, placing it in the 88th percentile of all CPUs compared to the 87th percentile for the Ryzen AI 5 PRO. The Ryzen 9's nearest rival is the Intel Core i7-14700T (avg score 41,914, a 0.1% difference), while the Ryzen AI 5 PRO's closest competitor is the Intel Xeon 6357P (avg score 40,630, a 0.2% difference). This means the Ryzen 9 sits in a slightly higher performance tier overall.

For users building a system for heavy multi-threaded work such as video editing, 3D rendering, software compilation, or server-like tasks, the Ryzen 9 PRO 8945HS is the clear choice. Its 8 cores, 16 threads, 16 MB L3 cache, 20 PCIe Gen 4 lanes, and higher boost clock of 5.20 GHz give it decisive advantages in almost every measured category. The 45-watt TDP also suggests it can achieve this performance in a more power-efficient envelope, though the benchmark data does not directly measure power.

The Ryzen AI 5 PRO 435G is only a sensible pick for a user who specifically needs a desktop AM5 socket processor with ECC memory support and does not require heavy parallel throughput. Its single-threaded score is nearly identical to the Ryzen 9 (within 2.4%), so for basic desktop use, web browsing, office applications, and light coding, the experience will be comparable. However, its 10 PCIe lanes and 4 MB L3 cache severely limit its expansion and data-heavy capabilities. The Ryzen AI 5 PRO 435G is a desktop part, but the performance data shows it is not in the same class as the Ryzen 9 PRO 8945HS for demanding applications. Choose the Ryzen 9 for performance, the Ryzen AI 5 PRO only if the AM5 socket and its specific feature set are mandatory for your build.