AMD Ryzen 9 9955HX vs AMD Ryzen Embedded 9900X Comparison

Where Each One Wins

The recorded data draws a clear line between these two processors. The AMD Ryzen 9 9955HX wins every available benchmark comparison, while the AMD Ryzen Embedded 9900X has no recorded benchmark scores in the database. This is not a close contest; it is a one-sided dataset where the mobile chip holds all measured performance advantages.

The Ryzen 9 9955HX dominates in multi-threaded workloads. Its Cinebench R23 multi-core score of 37159 places it in the 96th percentile among all CPUs, a position that reflects substantial throughput capacity for heavily parallel tasks. The Passmark multithread score of 56171 reinforces this, and the chip’s average benchmark score of 91199 sits slightly above the Intel Xeon 654 (90717, 0.5% faster) and the AMD Ryzen AI Max+ 392 (90541, 0.7% faster). Against the Intel Core Ultra 7 270K Plus (93785, -2.8%) and Intel Xeon 6520P (93786, -2.8%), the Ryzen 9 9955HX trails by a narrow margin, but it still ranks near the top of the overall field.

Single-threaded performance also favors the Ryzen 9 9955HX. The Cinebench R23 single-core score of 2174 and the Passmark single-thread score of 4393 indicate strong per-core efficiency, likely stemming from its Zen 5 architecture. The chip’s boost clock of 5.40 GHz supports this, though the Embedded 9900X has a higher boost of 5.60 GHz. Without benchmark data for the Embedded part, the actual single-thread advantage cannot be quantified; only the mobile chip’s scores are available for analysis.

The Ryzen Embedded 9900X, by contrast, has zero recorded benchmark results. Its percentile ranking of 50 and an average benchmark score of 0 reflect the absence of data, not a performance deficiency. The processor remains active in production and targets the desktop embedded segment, but the database currently holds no measurements to compare against the Ryzen 9 9955HX.

FAQ

Q: Which processor has higher multi-core performance?

A: The Ryzen 9 9955HX, based on the only available benchmark data. Its Cinebench R23 multi-core score is 37159, and its Passmark multithread score is 56171. The Ryzen Embedded 9900X has no recorded scores.

Q: Does the Ryzen 9 9955HX beat the Ryzen Embedded 9900X in single-core performance?

A: The data shows the Ryzen 9 9955HX achieves a Cinebench R23 single-core score of 2174 and a Passmark single-thread score of 4393. The Embedded 9900X has no benchmark entries, so no direct comparison is possible.

Q: How does the Ryzen 9 9955HX compare to its nearest rivals?

A: The Ryzen 9 9955HX is 0.5% faster than the Intel Xeon 654 and 0.7% faster than the AMD Ryzen AI Max+ 392. It is 2.8% slower than both the Intel Core Ultra 7 270K Plus and the Intel Xeon 6520P.

Q: What is the core and thread configuration of each processor?

A: The Ryzen 9 9955HX has 16 cores and 32 threads. The Ryzen Embedded 9900X has 12 cores and 24 threads.

Q: Which processor has a higher boost clock?

A: The Ryzen Embedded 9900X has a boost clock of 5.60 GHz, which is higher than the Ryzen 9 9955HX’s 5.40 GHz.

Q: Are both processors based on the same architecture?

A: Both use Zen 5 architecture, but the Ryzen 9 9955HX uses the Fire Range codename, while the Ryzen Embedded 9900X uses Granite Ridge.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark entries for these two processors. The Ryzen Embedded 9900X has an empty benchmark array, and the wins counter for both parts is zero. Consequently, the only meaningful comparison comes from the Ryzen 9 9955HX’s standalone scores against its nearest rivals.

The Ryzen 9 9955HX delivers a Cinebench R23 multi-core score of 37159. This result places it 0.5% ahead of the Intel Xeon 654 (90717 average score) and 0.7% ahead of the AMD Ryzen AI Max+ 392 (90541). The gap to the Intel Core Ultra 7 270K Plus (93785) is -2.8%, meaning the Intel part holds a slight edge. The same -2.8% delta applies to the Intel Xeon 6520P (93786). These margins are narrow, indicating that the Ryzen 9 9955HX sits in a competitive cluster rather than an outright leadership position.

In Passmark integer math, the Ryzen 9 9955HX scores 212598, while floating point math reaches 136682. The extended instructions score of 57946 and data encryption score of 37330 further detail its computational breadth. Data compression reaches 731998, and random string sorting hits 77890. Prime number finding is comparatively lower at 287, and physics simulation scores 2720. These figures represent the mobile chip’s full recorded workload profile.

The Ryzen Embedded 9900X offers no counterpoints. Its absence from the benchmark database means every performance statement in this section applies solely to the Ryzen 9 9955HX. The Embedded part’s higher boost clock (5.60 GHz versus 5.40 GHz) and lower core count (12 versus 16) suggest a different design target, but without scores, any performance inference remains speculative.

Specification Differences

The two processors diverge on several core specifications. The Ryzen 9 9955HX uses 16 cores and 32 threads, while the Ryzen Embedded 9900X uses 12 cores and 24 threads. Base clocks differ substantially: the mobile chip runs at 2.50 GHz, whereas the embedded chip runs at 4.40 GHz. Boost clocks are closer, with 5.40 GHz for the 9955HX and 5.60 GHz for the 9900X.

Thermal design power presents a significant gap. The Ryzen 9 9955HX has a TDP of 55 watts, while the Ryzen Embedded 9900X has a TDP of 120 watts. This reflects their distinct market segments: the former is mobile, the latter is desktop embedded.

Socket compatibility also differs. The Ryzen 9 9955HX uses AMD Socket FL1, while the Ryzen Embedded 9900X uses AMD Socket AM5. PCIe lane counts vary as well: the mobile chip supports Gen 5 with 28 lanes (CPU only), and the embedded chip supports Gen 5 with 24 lanes (CPU only).

Integrated graphics differ in naming. The Ryzen 9 9955HX includes Radeon 610M, while the Ryzen Embedded 9900X includes Radeon Graphics. Both support DDR5 memory with dual-channel configuration and 89.6 GB/s bandwidth, and both support ECC memory.

Release dates are not identical. The Ryzen 9 9955HX entered production status on 2025-01-05, while the Ryzen Embedded 9900X followed on 2025-10-06. Both are currently active in production.

Architecture Differences

Both processors share the Zen 5 architecture, but their codenames and generations differ. The Ryzen 9 9955HX belongs to the Fire Range codename within the Ryzen 9 generation, while the Ryzen Embedded 9900X belongs to the Granite Ridge codename within the Ryzen Embedded generation.

The process node is identical: both use 4 nm manufacturing from TSMC. Transistor counts match at 16,630 million, and die sizes are the same at 2x 70.6 mm². Cache configurations are also consistent: 80 KB L1 per core, 1 MB L2 per core, and 64 MB L3. The Ryzen 9 9955HX lists L3 as 64 MB (shared), while the Ryzen Embedded 9900X lists L3 as 64 MB without the shared qualifier, but the capacity is equal.

Neither processor features 3D V-Cache. The vCache3d field is null for both. The multiplier is unlocked on both parts, allowing overclocking flexibility. Part numbers differ (100-000001028 for the mobile chip, 100-000000662E for the embedded chip), and the market segments are explicitly mobile versus desktop.

The key architectural distinction lies in the codename and generation lineage, not in the underlying silicon. Fire Range targets high-end mobile systems, while Granite Ridge targets embedded desktop applications. The 55-watt TDP of the mobile chip versus the 120-watt TDP of the embedded chip highlights a power-oriented design for the former and a performance-oriented design for the latter, even though both use the same base architecture.

The Verdict

The data supports a straightforward conclusion: the AMD Ryzen 9 9955HX is the only processor with verified performance metrics, and those metrics are strong. Its 96th percentile ranking among all CPUs, combined with a Cinebench R23 multi-core score of 37159 and a Passmark single-thread score of 4393, positions it as a high-tier mobile processor. The nearest rival comparisons show it within 0.7% of the AMD Ryzen AI Max+ 392 and 0.5% of the Intel Xeon 654, while trailing the Intel Core Ultra 7 270K Plus and Intel Xeon 6520P by 2.8%. This places the chip in a tight competitive band near the top of the database.

The AMD Ryzen Embedded 9900X has no recorded benchmark scores. Its percentile of 50 and average score of 0 indicate missing data, not measured weakness. The processor’s 12 cores, 24 threads, 4.40 GHz base clock, and 5.60 GHz boost clock suggest a capable desktop embedded part, but the database cannot confirm any performance level.

For users selecting between these two, the choice depends entirely on whether the Embedded part’s specifications justify its unverified status. The Ryzen 9 9955HX offers proven multi-threaded and single-threaded results, a lower TDP of 55 watts, and a mobile socket. The Ryzen Embedded 9900X offers more cores per watt? No, it offers fewer cores (12 versus 16), a higher TDP of 120 watts, a desktop socket, and a higher boost clock. Without benchmarks, the Embedded 9900X remains an unknown quantity.

The database verdict is clear: the Ryzen 9 9955HX is the only part with measurable performance, and that performance is competitive at the high end. The Ryzen Embedded 9900X awaits testing before any meaningful performance claim can be made.