AMD Ryzen 9 9955HX vs AMD Ryzen AI 7 445 Comparison

FAQ

Q: How do the two processors compare in overall benchmark standing?

A: The AMD Ryzen 9 9955HX sits at the 96th percentile of all CPUs in the database, with an average benchmark score of 91199. The AMD Ryzen AI 7 445 sits at the 79th percentile, with an average benchmark score of 26936.

Q: Which processor has the higher core count and how does that affect its scoring?

A: The Ryzen 9 9955HX uses 16 cores and 32 threads, while the Ryzen AI 7 445 uses 6 cores and 12 threads. This core advantage shows directly in the multithreaded PassMark score: 56171 for the 9955HX versus 18115 for the 445, a delta of 210.1%.

Q: What is the single-core performance difference?

A: In Cinebench R23 single-core, the Ryzen 9 9955HX scores 2174 versus 1806 for the Ryzen AI 7 445, a 20.4% advantage. The PassMark single-thread result shows 4393 versus 3591, a 22.3% advantage.

Q: Do both processors use the same architecture?

A: Yes, both are built on Zen 5 architecture and both use a 4 nm TSMC process node. However, the Ryzen 9 9955HX uses the Fire Range codename while the Ryzen AI 7 445 uses Gorgon Point.

Q: Are both processors unlocked for overclocking?

A: No. The Ryzen 9 9955HX has an unlocked multiplier, while the Ryzen AI 7 445 does not.

Q: Which processor has the higher boost clock?

A: The Ryzen 9 9955HX boosts to 5.40 GHz, while the Ryzen AI 7 445 boosts to 4.60 GHz.

Architecture Differences

Both processors share the same Zen 5 architecture and the same 4 nm TSMC process node. The Ryzen 9 9955HX belongs to the 9000 series with the Fire Range codename and is described in the database as Ryzen 9 (Zen 5 (Fire Range)). The Ryzen AI 7 445 belongs to the Ryzen AI 400 generation and combines Zen 5 with Zen 5c cores under the Gorgon Point codename.

The core configurations diverge sharply. The Ryzen 9 9955HX contains 16 cores and 32 threads, while the Ryzen AI 7 445 contains 6 cores and 12 threads. The 9955HX carries 16,630 million transistors on a dual-die package with a die size of 2x 70.6 mm²; the database does not list transistor or die size data for the 445.

Cache structures also differ. Both allocate 80 KB of L1 per core and 1 MB of L2 per core, but the shared L3 cache is much larger on the 9955HX: 64 MB shared versus 4 MB on the 445. This L3 difference is relevant for workloads with large working sets that fit in cache.

The integrated graphics differ as well. The Ryzen 9 9955HX uses the Radeon 610M, while the Ryzen AI 7 445 uses the Radeon 840M. Memory support is largely the same in bandwidth terms: both run dual-channel memory at 89.6 GB/s and both support ECC. The 9955HX supports DDR5 only, while the 445 supports DDR5 and LPDDR5X.

PCIe connectivity is another split. The Ryzen 9 9955HX provides Gen 5 with 28 CPU lanes, whereas the Ryzen AI 7 445 provides Gen 4 with 14 CPU lanes. The 9955HX uses AMD Socket FL1, the 445 uses AMD Socket FP8. The 9955HX has an unlocked multiplier, the 445 does not. Release dates also differ: the 9955HX is recorded as released on 2025-01-05, the 445 on 2026-01-04. Both are listed as Active production and both target the mobile market segment.

Where Each One Wins

The benchmark data shows a clean sweep: the AMD Ryzen 9 9955HX wins all 15 recorded head-to-head tests against the AMD Ryzen AI 7 445. There are no workloads in the database where the 445 takes the lead. The analysis therefore focuses on the magnitude of the 9955HX advantage and what that implies for use cases.

The largest deltas appear in compute-heavy and encryption workloads. The 9955HX leads by 412.5% in PassMark find prime numbers, by 266.1% in extended instructions, by 264.5% in integer math, and by 254.9% in data encryption. These are strongly multithreaded or instruction-intensive tasks where the 16-core, 32-thread configuration dominates the 6-core, 12-thread part.

The smallest deltas, while still large, appear in single-threaded tests. Cinebench R23 single-core shows a 20.4% advantage, Cinebench R15 single-core shows 32.3%, and PassMark single-thread shows 22.3%. The 445 remains competitive in single-thread pace but loses ground when the workload scales across cores.

The 9955HX also excels in content-creation style benchmarks. Cinebench R23 multicore scores 37159 versus 10590, a 250.9% lead. Cinebench R15 multicore scores 5905 versus 1723, a 242.7% lead. PassMark data compression shows 731998 versus 215812, a 239.2% lead. The Ryzen AI 7 445, by contrast, posts its strongest relative results in single-core tests and physics, where the delta drops to 178.7%, the smallest margin of any multithreaded test.

Specification Differences

The two processors differ across nearly every major specification field. Core count: 16 versus 6. Thread count: 32 versus 12. Base clock: 2.50 GHz versus 2.00 GHz. Boost clock: 5.40 GHz versus 4.60 GHz. TDP: 55 W versus 28 W. Socket: AMD Socket FL1 versus AMD Socket FP8.

Architecture generation differs in naming: the 9955HX is listed as Ryzen 9 (Zen 5 (Fire Range)), while the 445 is listed as Ryzen AI 400 (Zen 5 / Zen 5c). The codenames are Fire Range versus Gorgon Point. Process node is identical at 4 nm, and the foundry is TSMC for both.

The 9955HX carries 16,630 million transistors with a die size of 2x 70.6 mm²; no transistor or die size data is recorded for the 445. L1 and L2 per-core caches match at 80 KB and 1 MB, but L3 differs: 64 MB shared versus 4 MB. Memory support differs: DDR5 only versus DDR5 and LPDDR5X, with both using dual-channel at 89.6 GB/s and both supporting ECC.

PCIe generation and lane count differ: Gen 5 with 28 lanes versus Gen 4 with 14 lanes. Integrated graphics differ: Radeon 610M versus Radeon 840M. The multiplier is unlocked on the 9955HX and locked on the 445. Part numbers differ (100-000001028 versus 100-000001935), as do release dates (2025-01-05 versus 2026-01-04). Neither part has a recorded launch MSRP.

Head-to-Head Benchmarks

The recorded data contains 15 head-to-head tests, and the Ryzen 9 9955HX wins every one. The largest margin comes in PassMark find prime numbers, where the 9955HX scores 287 against 56 for the 445, a delta of 412.5%. That test rewards raw integer throughput across many cores.

Cinebench R23 multicore shows the second-largest margin at 250.9%, with scores of 37159 versus 10590. Cinebench R15 multicore follows at 242.7%, scoring 5905 versus 1723. PassMark data compression reaches 731998 versus 215812, a 239.2% lead, and PassMark random string sorting reaches 77890 versus 23488, a 231.6% lead.

The encryption and math tests reinforce the pattern. PassMark data encryption scores 37330 versus 10519, a 254.9% lead. PassMark integer math scores 212598 versus 58332, a 264.5% lead. PassMark floating point math scores 136682 versus 39362, a 247.2% lead. PassMark extended instructions scores 57946 versus 15826, a 266.1% lead.

Multithreaded PassMark scores 56171 versus 18115, a 210.1% lead. PassMark physics scores 2720 versus 976, a 178.7% lead, the smallest multithreaded margin in the set.

Single-threaded tests show the narrowest gaps but still favor the 9955HX. Cinebench R23 single-core scores 2174 versus 1806, a 20.4% lead. PassMark single-thread and single-thread duplicate both score 4393 versus 3591, a 22.3% lead. Cinebench R15 single-core scores 336 versus 254, a 32.3% lead.

The nearest-rival data places these scores in context. The 9955HX has an average benchmark score of 91199, sitting 0.5% above the Intel Xeon 654 (90717), 0.7% above the AMD Ryzen AI Max+ 392 (90541), and 2.8% below both the Intel Core Ultra 7 270K Plus (93785) and Intel Xeon 6520P (93786). The 445 has an average score of 26936, sitting 0.1% above the Intel Core i7-1370P (26900), 0.3% above the AMD Ryzen 5 7545U (26849), and 0.4% and 0.6% below the AMD Ryzen 7 5700G (27051) and Intel Core i9-9900K (27097). The 9955HX therefore competes with high-end desktop and workstation parts, while the 445 competes with mid-range mobile and older desktop chips.

The Verdict

The data describes two very different products. The AMD Ryzen 9 9955HX is a 16-core, 32-thread mobile processor with a 5.40 GHz boost clock, 64 MB of L3 cache, Gen 5 PCIe with 28 lanes, and an unlocked multiplier. It achieves a 96th percentile ranking and an average benchmark score of 91199, with nearest rivals in the Xeon and Core Ultra 7 class.

The AMD Ryzen AI 7 445 is a 6-core, 12-thread mobile processor with a 4.60 GHz boost clock, 4 MB of L3 cache, Gen 4 PCIe with 14 lanes, and a locked multiplier. It achieves a 79th percentile ranking and an average benchmark score of 26936, with nearest rivals in the Core i7-1370P and Ryzen 7 5700G class.

Anyone selecting between these two should weigh the 9955HX for multithreaded and single-threaded compute alike. It wins all 15 recorded benchmarks, with margins ranging from 20.4% in single-core Cinebench R23 to 412.5% in PassMark find prime numbers. The 445 offers a lower 28 W TDP and LPDDR5X memory support, which the data suggests suits more power-conscious or thinner designs, but the recorded benchmarks do not show any workload where it outperforms the 9955HX. From the available measurements, the Ryzen 9 9955HX is the stronger processor in every tested category.