AMD Ryzen 7 8745HX vs AMD Ryzen AI 5 PRO 435G Comparison

Head-to-Head Benchmarks

The benchmark database shows a decisive sweep. The AMD Ryzen 7 8745HX wins all 11 recorded head-to-head tests, with margins ranging from a narrow 1.3% to a staggering 189.1%. The largest single victory occurs in the prime number search test, where the 8745HX scores 159 against the Ryzen AI 5 PRO 435G's 55, a difference of 189.1%. This indicates a massive advantage in workloads that stress recursive integer operations and branch prediction.

Data encryption shows the second-largest gap. The 8745HX records 21,840 points versus 12,111 for the Ryzen AI 5 PRO 435G, a 80.3% lead. This suggests the older architecture handles cryptographic workloads with significantly more headroom. Physics simulation follows closely, with the 8745HX scoring 1,681 against 999, a 68.3% advantage. That result points to superior handling of rigid body dynamics and collision detection tasks.

Multi-threaded performance shows a 55.4% gap. The 8745HX delivers 31,517 points while the Ryzen AI 5 PRO 435G manages 20,285. This is the headline metric for most productivity software, and the difference is substantial. Integer math tells a similar story: 100,328 for the 8745HX versus 63,707 for the Ryzen AI 5 PRO 435G, a 57.5% margin. Random string sorting, a proxy for memory access patterns and pointer chasing, shows a 62.3% gap in favor of the 8745HX with scores of 44,494 and 27,407 respectively.

Extended instruction workloads, which measure SIMD and specialized instruction efficiency, show a 47.8% difference. The 8745HX scores 27,638, while the Ryzen AI 5 PRO 435G scores 18,697. Data compression follows at 43.5%, with the 8745HX at 363,759 and the Ryzen AI 5 PRO 435G at 253,484. Floating point math rounds out the major compute categories with a 42.5% gap, 61,972 versus 43,494.

The closest contest is single-thread performance. The 8745HX scores 3,879, and the Ryzen AI 5 PRO 435G scores 3,829, a margin of only 1.3%. This is the only benchmark where the two processors are effectively in the same class. It suggests that for lightly threaded, latency-sensitive workloads, the architectural differences between Zen 4 and the Zen 5 / Zen 5c hybrid design nearly cancel out.

The average benchmark scores confirm the overall picture. The 8745HX posts an average of 60,104, placing it in the 92nd percentile of all CPUs in the database. The Ryzen AI 5 PRO 435G averages 40,718, sitting in the 87th percentile. The 47.6% gap between these averages is consistent with the individual test results. The 8745HX's nearest rivals, the AMD Ryzen 9 7945HX and Intel Core i9-14900F, sit within 0.2% of its average score, indicating it trades blows with flagship desktop and high-end mobile parts. The Ryzen AI 5 PRO 435G, by contrast, sits near the Intel Xeon 6357P and Intel Core 7 253PE, with deltas between 0.2% and 0.5%.

FAQ

Q: Which processor wins in single-threaded performance?

A: The AMD Ryzen 7 8745HX wins narrowly. It scores 3,879 in the single-thread test, while the AMD Ryzen AI 5 PRO 435G scores 3,829, a margin of 1.3%. This is the closest result in the entire head-to-head comparison.

Q: How large is the multi-threading gap?

A: The 8745HX delivers 31,517 points in the multithread test, which is 55.4% higher than the 20,285 points recorded by the Ryzen AI 5 PRO 435G. The 8745HX has 8 cores and 16 threads, while the Ryzen AI 5 PRO 435G has 6 cores and 12 threads.

Q: What is the biggest benchmark difference between the two?

A: The largest delta is in the prime number search test, where the 8745HX scores 159 and the Ryzen AI 5 PRO 435G scores 55. That is a 189.1% advantage for the 8745HX.

Q: Is the Ryzen AI 5 PRO 435G competitive in any compute category?

A: In floating point math, the 8745HX leads by 42.5%, and in data compression by 43.5%. The smallest margin outside single-thread is the 42.5% gap in floating point. No category shows the Ryzen AI 5 PRO 435G ahead.

Q: How do the two processors rank against all CPUs in the database?

A: The 8745HX sits in the 92nd percentile of all CPUs, with an average benchmark score of 60,104. The Ryzen AI 5 PRO 435G sits in the 87th percentile, with an average score of 40,718.

Q: Which processor has the higher boost clock?

A: The 8745HX has a boost clock of 5.10 GHz, while the Ryzen AI 5 PRO 435G has a boost clock of 4.50 GHz. The base clocks also differ: 3.60 GHz for the 8745HX and 2.00 GHz for the Ryzen AI 5 PRO 435G.

Architecture Differences

The two processors represent divergent design philosophies from AMD. The Ryzen 7 8745HX uses the Zen 4 architecture, codenamed Dragon Range, built on a 5 nm process at TSMC. It belongs to the 8000 series and is described in the database as a Ryzen 7 generation part. The Ryzen AI 5 PRO 435G uses a hybrid Zen 5 / Zen 5c configuration, codenamed Gorgon Point, built on a 4 nm process, also at TSMC. It belongs to the Ryzen AI PRO 400 generation.

The transistor counts and die sizes are not directly comparable. The 8745HX carries 6,570 million transistors on a 71 mm² die. The database records no transistor count or die size for the Ryzen AI 5 PRO 435G, which prevents a density comparison. The process node difference, 5 nm versus 4 nm, suggests the newer part should have an efficiency advantage, but the benchmark data does not isolate power efficiency.

Cache hierarchies differ markedly. The 8745HX allocates 64 KB of L1 per core, 1 MB of L2 per core, and a shared 32 MB L3 cache. The Ryzen AI 5 PRO 435G allocates 80 KB of L1 per core, 1 MB of L2 per core, but only 4 MB of shared L3. The larger L3 on the 8745HX likely contributes to its strong data compression and string sorting results, as those workloads benefit from larger working sets in cache.

The hybrid core design of the Ryzen AI 5 PRO 435G is a notable architectural shift. Zen 5 / Zen 5c mixes full-performance cores with compact cores. The 8745HX uses a uniform Zen 4 layout. The database does not specify the ratio of Zen 5 to Zen 5c cores, but the core count difference, 8 versus 6, partially explains the multi-thread gap.

Memory bandwidth figures are close. The 8745HX lists 83.2 GB/s, while the Ryzen AI 5 PRO 435G lists 89.6 GB/s. The newer part has a slight theoretical bandwidth advantage, yet it loses in every memory-sensitive benchmark. This suggests latency or cache allocation plays a larger role than raw bandwidth in these tests.

Specification Differences

The core and thread counts differ: 8 cores and 16 threads for the 8745HX, versus 6 cores and 12 threads for the Ryzen AI 5 PRO 435G. Clock speeds also differ substantially. The 8745HX has a base clock of 3.60 GHz and a boost clock of 5.10 GHz. The Ryzen AI 5 PRO 435G has a base clock of 2.00 GHz and a boost clock of 4.50 GHz.

Thermal design power differs by 10 W. The 8745HX is rated at 55 W, while the Ryzen AI 5 PRO 435G is rated at 65 W. The socket is a key differentiator: the 8745HX uses AMD Socket FL1, while the Ryzen AI 5 PRO 435G uses AMD Socket AM5. This means they are not interchangeable in a system.

PCIe support differs by generation and lane count. The 8745HX offers Gen 5 with 28 lanes (CPU only), while the Ryzen AI 5 PRO 435G offers Gen 4 with 10 lanes (CPU only). The 8745HX's PCIe Gen 5 support provides double the theoretical bandwidth per lane, which matters for discrete GPUs and NVMe storage.

ECC memory support is present on the Ryzen AI 5 PRO 435G and absent on the 8745HX. This makes the Ryzen AI 5 PRO 435G more suitable for error-sensitive workstation tasks. Integrated graphics differ as well: the 8745HX includes Radeon 610M, while the Ryzen AI 5 PRO 435G includes Radeon 840M. The multiplier is unlocked on the 8745HX but locked on the Ryzen AI 5 PRO 435G.

The market segments differ. The 8745HX is listed as Mobile, while the Ryzen AI 5 PRO 435G is listed as Desktop. Release dates also differ: the 8745HX launched on 2025-04-22, and the Ryzen AI 5 PRO 435G launched on 2026-03-01. The 8745HX has a part number of 100-000001851, while the Ryzen AI 5 PRO 435G has a part number of 100-000001783.

The Verdict

The recorded data indicates the AMD Ryzen 7 8745HX is the stronger processor in every measured benchmark. It wins all 11 head-to-head tests, holds a 92nd percentile ranking versus the 87th percentile of the Ryzen AI 5 PRO 435G, and posts an average score 47.6% higher. The largest margins appear in integer-heavy and multi-threaded workloads, where the 8745HX's 8-core, 16-thread configuration and 32 MB L3 cache provide a clear advantage.

The Ryzen AI 5 PRO 435G does offer a few distinguishing features. It supports ECC memory, uses a 4 nm process, and comes with a newer integrated GPU, the Radeon 840M. It also has a higher memory bandwidth rating at 89.6 GB/s. However, none of these translate into a benchmark win in the recorded data. The single-thread test is the closest race, with only a 1.3% gap, which shows that the Zen 5 / Zen 5c hybrid design is competitive on lightly threaded tasks.

The socket difference is decisive for system builders. A Socket FL1 platform is required for the 8745HX, while the Ryzen AI 5 PRO 435G needs Socket AM5. These are not interchangeable. The 8745HX also has a lower TDP rating of 55 W despite being the faster chip, which is notable given that the Ryzen AI 5 PRO 435G is rated at 65 W.

Where Each One Wins

The AMD Ryzen 7 8745HX wins in all compute-intensive categories. It is the clear choice for multi-threaded rendering, compilation, and simulation workloads, based on its 55.4% multithread advantage and 68.3% physics lead. Data encryption workloads favor it by 80.3%, and integer math by 57.5%. The 189.1% lead in prime number searching makes it the pick for mathematical and algorithmic workloads. Its 32 MB L3 cache likely drives the 62.3% random string sorting advantage, which benefits database and text processing tasks. The 92nd percentile ranking puts it in the company of high-end desktop and mobile parts like the AMD Ryzen 9 7945HX and Intel Core i9-14900F.

The AMD Ryzen AI 5 PRO 435G has no benchmark wins in the recorded data. Its strengths are qualitative. The 4 nm process and ECC memory support make it a candidate for reliability-focused desktop builds, and the Radeon 840M integrated graphics are newer than the Radeon 610M in the 8745HX. The Socket AM5 platform offers a different upgrade path. Its 87th percentile ranking places it near the Intel Xeon 6357P and Intel Core 7 253PE, which are competent mid-range parts, but the data shows it cannot match the 8745HX in raw throughput.

For users prioritizing measured performance, the 8745HX wins every category. For users who need ECC memory, a newer process node, or a Socket AM5 desktop platform, the Ryzen AI 5 PRO 435G has relevant features, but the performance data does not support a case for it in speed-sensitive applications.