AMD Ryzen Embedded 9900X vs Intel Core Ultra 5 250K Plus Comparison

Head-to-Head Benchmarks

The recorded data for this comparison is one-sided. The AMD Ryzen Embedded 9900X has no benchmark scores in the database, while the Intel Core Ultra 5 250K Plus has a full set of Cinebench and PassMark results. This makes a direct score-by-score comparison impossible. What the database does show is where the Intel part stands on its own, and the AMD part can only be assessed through its listed specifications.

The Intel Core Ultra 5 250K Plus delivers a Cinebench R23 multi-core score of 30867 and a single-core score of 2261. The R20 results show 18442 multi-core and 2603 single-core, while the R15 results are 4640 multi-core and 328 single-core. These numbers place the processor at the 93rd percentile among all CPUs in the database, with an average benchmark score of 66855.

Its nearest rivals in the database are all close competitors. The AMD EPYC 4465P averages 66925, which is 0.1% higher than the Intel part. The Intel Xeon 6515P averages 67006, 0.2% higher. The Intel Core Ultra 9 275HX averages 67469, 0.9% higher. The only rival that scores lower is the Intel Core Ultra 5 250KF Plus at 66159, which is 1.1% below the 250K Plus. These deltas are all under one percent except for the KF variant, indicating the 250K Plus sits in a tightly clustered performance band.

PassMark results for the Intel part show a multi-thread score of 51596 and a single-thread score of 4757. The integer math score is 125091, floating point math is 162692, and extended instructions score 44565. Data compression hits 568721, data encryption reaches 42144, and random string sorting finishes at 69090. The physics score is 3494, and finding prime numbers yields 486.

Because the AMD Ryzen Embedded 9900X has zero recorded benchmarks, the database cannot produce head-to-head wins for either processor. The wins column shows zero for both. The analysis must therefore rely on architectural specifications to infer where each processor may have advantages, while acknowledging that no measured performance data exists for the AMD part.

Where Each One Wins

With no benchmark data for the AMD Ryzen Embedded 9900X, the database does not support any direct performance win for that processor. The Intel Core Ultra 5 250K Plus, however, has measurable results that indicate its strengths.

The Intel part shows a strong multi-threaded profile. The Cinebench R23 multi-core score of 30867, combined with a PassMark multi-thread score of 51596, indicates heavy parallel workloads are handled well. The floating point math score of 162692 and integer math score of 125091 reinforce this. Data compression at 568721 is the highest single PassMark sub-score recorded for this chip, suggesting compression and decompression tasks are a particular strength.

Single-threaded performance is also solid. The Cinebench R23 single-core score of 2261 and PassMark single-thread score of 4757 indicate responsive single-thread execution. The R15 single-core score of 328 and R20 single-core score of 2603 follow the same pattern.

The AMD part, based on specifications alone, has 12 cores and 24 threads. The Intel part has 18 cores and 18 threads, meaning the AMD chip offers simultaneous multithreading while the Intel chip does not. In workloads that scale with thread count, the AMD processor could theoretically use its 24 threads to compete, but no measured data confirms this. The Intel processor has a 5.30 GHz boost clock versus the AMD 5.60 GHz boost, so the AMD chip has a higher ceiling in clock speed, but again, no benchmark confirms the practical effect.

The database only records wins for the Intel part because only that part has scores. The AMD part cannot be assigned wins without measurements.

Architecture Differences

The AMD Ryzen Embedded 9900X uses the Granite Ridge codename from the Ryzen Embedded series, built on a 4 nm process at TSMC. It belongs to the Zen 5 (Granite Ridge) generation within the 9000 series. The die size is listed as 2x 70.6 mm², and the transistor count is 16,630 million.

The Intel Core Ultra 5 250K Plus uses the Arrow Lake Refresh codename from the Core Ultra Series 2. It is built on a 3 nm process at TSMC, with a die size of 243 mm² and 17,800 million transistors. The generation is listed as Ultra 5 (Arrow Lake).

Core and thread counts differ substantially. The AMD chip has 12 cores and 24 threads, while the Intel chip has 18 cores and 18 threads. The AMD processor supports symmetric multithreading, giving it two threads per core. The Intel processor has one thread per core.

Cache layouts are structurally different. The AMD chip has 80 KB of L1 cache per core, 1 MB of L2 cache per core, and 64 MB of L3 cache. The Intel chip has 192 KB of L1 cache per core, 3 MB of L2 cache per core, and 30 MB of shared L3 cache. The AMD part has more total L3, while the Intel part has more L1 and L2 per core.

Base clocks are close: the AMD chip runs at 4.40 GHz, the Intel at 4.20 GHz. Boost clocks are 5.60 GHz for AMD and 5.30 GHz for Intel. Thermal design power is 120 watts for AMD and 125 watts for Intel.

Both processors use DDR5 memory with dual-channel buses. The AMD memory bandwidth is 89.6 GB/s, while the Intel memory bandwidth is 115.2 GB/s. Both support ECC memory.

PCI Express connectivity differs. The AMD chip provides Gen 5 with 24 lanes (CPU only), while the Intel chip provides Gen 5 with 20 lanes (CPU only).

Integrated graphics also differ. The AMD chip uses Radeon Graphics, while the Intel chip uses Arc Xe-LPG Graphics 64EU.

Sockets are incompatible. The AMD chip uses AMD Socket AM5, and the Intel chip uses Intel Socket 1851.

Both processors have unlocked multipliers. The AMD chip was released on 2025-10-06, and the Intel chip on 2026-03-10. Both have active production status.

FAQ

Q: Which processor has more cores?

A: The Intel Core Ultra 5 250K Plus has 18 cores, while the AMD Ryzen Embedded 9900X has 12 cores.

Q: Which processor has more threads?

A: The AMD Ryzen Embedded 9900X has 24 threads, while the Intel Core Ultra 5 250K Plus has 18 threads.

Q: What is the Intel part's benchmark percentile?

A: The Intel Core Ultra 5 250K Plus is at the 93rd percentile among all CPUs in the database, with an average benchmark score of 66855.

Q: Does the AMD part have any recorded benchmark scores?

A: No, the database lists no benchmarks for the AMD Ryzen Embedded 9900X, so its average benchmark score is 0 and its percentile is 50.

Q: Which processor has more L3 cache?

A: The AMD Ryzen Embedded 9900X has 64 MB of L3 cache, while the Intel Core Ultra 5 250K Plus has 30 MB of shared L3 cache.

Q: What are the process nodes for each processor?

A: The AMD Ryzen Embedded 9900X uses a 4 nm process, and the Intel Core Ultra 5 250K Plus uses a 3 nm process. Both are fabricated by TSMC.

The Verdict

The data in the database supports a clear choice only for the Intel part, because it is the only one with measured performance. The Intel Core Ultra 5 250K Plus records a 93rd percentile standing, with an average benchmark score of 66855. Its nearest rival, the AMD EPYC 4465P, is only 0.1% ahead, and the Intel Core Ultra 9 275HX is 0.9% ahead. These are marginal differences, indicating the 250K Plus competes at a high level within its peer group.

The AMD Ryzen Embedded 9900X has no benchmark scores, no average score, and no nearest rivals listed. Its percentile of 50 is the default mid-point, not a measured result. The database cannot confirm any performance claim for this processor.

For users choosing between these two, the recorded data favors the Intel Core Ultra 5 250K Plus for measured performance. The AMD chip offers more threads, a higher boost clock, and more L3 cache in its specification sheet, but without benchmark results, those specifications do not translate into verified performance. The Intel chip delivers documented Cinebench and PassMark scores across every major test category.

The Intel part also has a higher memory bandwidth at 115.2 GB/s versus 89.6 GB/s, and a larger die at 243 mm² versus 2x 70.6 mm². The AMD chip has more PCIe lanes at 24 versus 20, and a lower TDP at 120 watts versus 125 watts. These specification differences are real, but they do not compensate for the absence of measured data on the AMD side.

The verdict from the database is straightforward: the Intel Core Ultra 5 250K Plus is the processor with verifiable performance, and the AMD Ryzen Embedded 9900X remains unverified in this dataset.

Specification Differences

| Specification | AMD Ryzen Embedded 9900X | Intel Core Ultra 5 250K Plus |

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

| Cores | 12 | 18 |

| Threads | 24 | 18 |

| Base clock | 4.40 GHz | 4.20 GHz |

| Boost clock | 5.60 GHz | 5.30 GHz |

| TDP | 120 W | 125 W |

| Socket | AMD Socket AM5 | Intel Socket 1851 |

| Process node | 4 nm | 3 nm |

| Transistors | 16,630 million | 17,800 million |

| Die size | 2x 70.6 mm² | 243 mm² |

| L1 cache | 80 KB (per core) | 192 KB (per core) |

| L2 cache | 1 MB (per core) | 3 MB (per core) |

| L3 cache | 64 MB | 30 MB (shared) |

| Memory bandwidth | 89.6 GB/s | 115.2 GB/s |

| PCIe | Gen 5, 24 lanes (CPU only) | Gen 5, 20 lanes (CPU only) |

| Integrated graphics | Radeon Graphics | Arc Xe-LPG Graphics 64EU |

| Release date | 2025-10-06 | 2026-03-10 |

| Launch MSRP | None listed | $199 |

The two processors share several traits: both support DDR5, both use dual-channel memory buses, both support ECC memory, both have unlocked multipliers, and both have active production status. The differences in the table above capture every field where the two parts diverge in the database.