AMD Ryzen 9 8945HX vs AMD Ryzen Embedded 9900X3D Comparison

Head-to-Head Benchmarks

The benchmark comparison between the AMD Ryzen 9 8945HX and the AMD Ryzen Embedded 9900X3D is limited by the data available. The Ryzen 9 8945HX has a full suite of 17 recorded benchmark scores, while the Ryzen Embedded 9900X3D has no recorded benchmark scores in the database. This means a direct score-by-score comparison is not possible at this time.

The Ryzen 9 8945HX delivers an average benchmark score of 76,212 across its recorded tests. Its percentile ranking places it in the 95th percentile of all CPUs in the database, indicating that it outperforms the vast majority of processors tracked. The nearest rival data provides context for this score: the Intel Core Ultra 9 285HX averages 76,155, a delta of 0.1 percent, while the AMD Ryzen 9 9950X3D averages 75,779, a delta of 0.6 percent. The AMD EPYC Embedded 8224P and the AMD Ryzen Threadripper PRO 9945WX both average slightly higher scores (76,492 and 76,513 respectively), with deltas of -0.4 percent, meaning the 8945HX trails them by less than half a percent.

For the Ryzen Embedded 9900X3D, the database records no benchmark scores. Its average benchmark score is listed as 0, and its percentile versus all CPUs is 50, which reflects the absence of test data rather than an actual performance measurement. The nearest rivals list is empty, so no comparative deltas exist for this processor.

The strongest recorded results for the Ryzen 9 8945HX come from the Cinebench series. In Cinebench R23 multi-core, it scores 42,713, while in single-core it reaches 6,030. The Cinebench R20 results show 17,939 multi-core and 2,532 single-core, and the Cinebench R15 results show 4,305 multi-core and 607 single-core. These scores represent a progression across the three Cinebench versions, with the multi-core figures scaling consistently with the test workload.

The Passmark suite adds further detail. The multi-thread score is 51,405, the single-thread score is 3,907, and the single-thread score is also recorded as 3,907 in a duplicate field. Integer math scores 195,180, floating-point math scores 117,453, and extended instructions score 49,823. Data compression scores 677,755, data encryption scores 40,836, random string sorting scores 78,781, and find prime numbers scores 262. Physics scores 2,168.

Since the Ryzen Embedded 9900X3D has no benchmark entries, the head-to-head comparison must rely on architectural specifications and the measured performance of the 8945HX as a reference point. The data shows that the 8945HX is a strong performer in its category, but no direct score deltas against the 9900X3D exist.

Where Each One Wins

The Ryzen 9 8945HX wins in any workload where benchmark data is the deciding factor. Its 16 cores and 32 threads provide a substantial parallel processing capability, and the recorded Cinebench and Passmark scores confirm strong multi-threaded performance. The 95th percentile ranking and the average score of 76,212 place it among the top processors tracked by the database. In the absence of any benchmark data for the 9900X3D, the 8945HX is the only processor in this pairing with measured performance evidence.

The Ryzen Embedded 9900X3D wins on paper in several specification categories. Its 12 cores and 24 threads are fewer than the 8945HX, but its base clock of 4.40 GHz is higher than the 8945HX's 2.50 GHz, and its boost clock of 5.50 GHz edges out the 8945HX's 5.40 GHz. The 9900X3D also carries a larger L3 cache at 128 MB compared to 64 MB, and it supports ECC memory while the 8945HX does not. These specification advantages suggest that in single-threaded or cache-sensitive workloads, the 9900X3D could outperform the 8945HX, but no benchmark scores exist to confirm this.

The 9900X3D also offers higher memory bandwidth at 89.6 GB/s versus 83.2 GB/s for the 8945HX. Its process node is smaller at 4 nm versus 5 nm, and it uses a newer architecture generation (Zen 5, Granite Ridge) compared to Zen 4 (Dragon Range) for the 8945HX. The 9900X3D has a higher TDP of 120 watts versus 55 watts, which may allow for sustained performance under load, though the database does not record power efficiency measurements.

Architecture Differences

The two processors come from different generations and use different manufacturing processes. The Ryzen 9 8945HX is part of the 8000 series, built on the Zen 4 architecture with the Dragon Range codename, and fabricated on a 5 nm process at TSMC. The Ryzen Embedded 9900X3D is part of the 9000 series, built on the Zen 5 architecture with the Granite Ridge codename, and fabricated on a 4 nm process at TSMC.

Transistor counts differ substantially. The 8945HX uses 13,140 million transistors across a die size of 2x 71 mm². The 9900X3D uses 16,630 million transistors across a die size of 2x 70.6 mm². The smaller process node and higher transistor count for the 9900X3D indicate a denser and potentially more capable design.

Cache structures differ in both per-core and total capacity. The 8945HX has 64 KB of L1 cache per core, 1 MB of L2 cache per core, and 64 MB of L3 cache. The 9900X3D has 80 KB of L1 cache per core, 1 MB of L2 cache per core, and 128 MB of L3 cache. The doubled L3 capacity for the 9900X3D is a significant architectural difference, though the database does not specify whether this comes from 3D V-Cache technology. The vCache3d field is null for both processors.

Memory support is identical in type: both use DDR5 with a dual-channel memory bus. The memory bandwidth differs, with the 8945HX at 83.2 GB/s and the 9900X3D at 89.6 GB/s. ECC memory support is exclusive to the 9900X3D, which is consistent with its embedded market segment.

PCIe lanes differ as well. The 8945HX provides Gen 5 with 28 lanes (CPU only), while the 9900X3D provides Gen 5 with 24 lanes (CPU only). Both use PCIe Gen 5, but the 8945HX offers more lanes.

The integrated graphics differ: the 8945HX uses a Radeon 610M, while the 9900X3D uses a Radeon Graphics. The database does not provide further details on the 9900X3D's graphics configuration.

Sockets and market segments are distinct. The 8945HX uses AMD Socket FL1 and targets the mobile market, while the 9900X3D uses AMD Socket AM5 and targets the desktop market. Both processors have unlocked multipliers, and both are in active production. The release dates differ: the 8945HX launched on 2025-04-22, while the 9900X3D launched on 2025-10-06.

The Verdict

The recorded data shows that the Ryzen 9 8945HX is a high-performing mobile processor with a 95th percentile ranking and an average benchmark score of 76,212. It has 16 cores, 32 threads, a boost clock of 5.40 GHz, and a 64 MB L3 cache. Its benchmark scores across Cinebench and Passmark confirm strong multi-threaded and single-threaded performance. The nearest rival comparisons show that it is competitive with top desktop processors like the AMD Ryzen 9 9950X3D and the Intel Core Ultra 9 285HX, with deltas under one percent.

The Ryzen Embedded 9900X3D has no benchmark scores in the database, so its performance cannot be quantified from measurements. The specification sheet shows a newer architecture (Zen 5 on 4 nm), higher base and boost clocks, a larger L3 cache, ECC memory support, and higher memory bandwidth. These features suggest that it is designed for embedded workloads where reliability and cache capacity matter, but the data does not confirm any performance advantage.

For users prioritizing measured performance, the 8945HX is the only processor with evidence in the database. Its benchmark scores and percentile ranking provide a clear picture of its capabilities. For users prioritizing architectural specifications, the 9900X3D offers a newer process node, more cache, and ECC support, but without benchmark data, its actual performance remains unverified.

The choice depends on whether measured performance or specification features take precedence. The database currently supports the 8945HX with full benchmark coverage, while the 9900X3D awaits benchmark entries.

FAQ

Q: Which processor has a higher average benchmark score?

A: The AMD Ryzen 9 8945HX has an average benchmark score of 76,212. The AMD Ryzen Embedded 9900X3D has no recorded benchmark scores, so its average is listed as 0.

Q: How many cores and threads does each processor have?

A: The Ryzen 9 8945HX has 16 cores and 32 threads. The Ryzen Embedded 9900X3D has 12 cores and 24 threads.

Q: What is the L3 cache size for each processor?

A: The Ryzen 9 8945HX has 64 MB of L3 cache. The Ryzen Embedded 9900X3D has 128 MB of L3 cache.

Q: Does either processor support ECC memory?

A: The Ryzen Embedded 9900X3D supports ECC memory. The Ryzen 9 8945HX does not support ECC memory.

Q: What process nodes are used by these processors?

A: The Ryzen 9 8945HX uses a 5 nm process at TSMC. The Ryzen Embedded 9900X3D uses a 4 nm process at TSMC.

Q: What is the boost clock for each processor?

A: The Ryzen 9 8945HX has a boost clock of 5.40 GHz. The Ryzen Embedded 9900X3D has a boost clock of 5.50 GHz.

Specification Differences

| Specification | AMD Ryzen 9 8945HX | AMD Ryzen Embedded 9900X3D |

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

| Series | 8000 series | 9000 series |

| Cores | 16 | 12 |

| Threads | 32 | 24 |

| Base Clock | 2.50 GHz | 4.40 GHz |

| Boost Clock | 5.40 GHz | 5.50 GHz |

| TDP | 55 W | 120 W |

| Socket | AMD Socket FL1 | AMD Socket AM5 |

| Architecture | Zen 4 | Zen 5 |

| Codename | Dragon Range | Granite Ridge |

| Process Node | 5 nm | 4 nm |

| Transistors | 13,140 million | 16,630 million |

| Die Size | 2x 71 mm² | 2x 70.6 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 | 128 MB |

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

| ECC Memory | No | Yes |

| PCIe | Gen 5, 28 Lanes (CPU only) | Gen 5, 24 Lanes (CPU only) |

| Integrated Graphics | Radeon 610M | Radeon Graphics |

| Market Segment | Mobile | Desktop |

| Release Date | 2025-04-22 | 2025-10-06 |