AMD Ryzen 9 9900X vs Intel Core 7 251E Comparison

Head-to-Head Benchmarks

The recorded data shows a complete asymmetry in benchmark coverage between these two processors. The AMD Ryzen 9 9900X has 22 individual benchmark results across 3DMark, Cinebench, Geekbench, and Passmark test suites, while the Intel Core 7 251E has no recorded benchmark scores in the database. This absence of data for the Intel part makes a direct score-to-score comparison impossible, yet the available measurements for the AMD processor still provide a meaningful reference point for what the 9900X delivers on its own.

The Ryzen 9 9900X posts a Cinebench R23 multicore score of 32172 and a single-core score of 2253. In Geekbench, the multicore result reaches 22174 with a single-core score of 3010. 3DMark results scale from 1286 in single-thread testing up to 13929 in max-threads testing. The Passmark suite shows a multithread score of 54643 and a single-thread score of 4672. These figures place the 9900X at the 92nd percentile among all CPUs in the database, with an average benchmark score of 57498.

The nearest rivals in the database for the 9900X provide context for where this processor sits. The AMD EPYC 9015 averages 57555, which is 0.1% above the 9900X. The AMD EPYC 7313 averages 57399, placing it 0.2% below. The Intel Core i9-14900 averages 58115, which is 1.1% above the 9900X. The Intel Xeon Platinum 8260M averages 58323, 1.4% above. These small deltas indicate the 9900X sits in a tightly contested performance band, with all four nearest rivals within roughly 1.5% of its average score.

Because the Intel Core 7 251E has no benchmark entries, there are no win counts assigned to either processor. The head-to-head table is empty, and both winsA and winsB are recorded as zero. The analysis must therefore rely on architectural specifications and the measured performance of the AMD part alone to characterize what each processor offers.

Where Each One Wins

Without direct benchmark data for the Intel Core 7 251E, the database cannot assign workload-specific victories between the two. What the data does show is where the Ryzen 9 9900X demonstrates strength across its own benchmark suite.

The 9900X shows balanced throughput across rendering, general computing, and encryption workloads. Cinebench R23 multicore at 32172 indicates strong sustained multi-threaded rendering capability. Passmark data encryption scores 33421, and extended instructions reach 55243. Floating point math hits 120083, while integer math reaches 181056. Random string sorting scores 72013, and data compression reaches 683579. Prime number finding scores 436, and physics simulation scores 3381.

The single-thread results paint a picture of a processor with high per-core efficiency. Passmark single-thread at 4672, Geekbench single-core at 3010, and Cinebench R23 single-core at 2253 all reflect a design that handles lightly threaded workloads well. The 3DMark scaling from 2519 at 2 threads to 9114 at 8 threads to 13929 at max threads shows consistent gains as thread count increases, with the largest jump occurring between 8 threads and max threads.

For the Intel Core 7 251E, the database records no benchmark results, so no workload-specific wins or losses can be attributed. The specification sheet shows 24 cores and 32 threads, which suggests a high core count, but without measured scores, the database cannot confirm how that translates into application performance. The percentile ranking of 50 for the 251E indicates it sits at the median of all CPUs in the database, but this ranking is derived from an average score of zero, which reflects missing data rather than measured performance.

Architecture Differences

The two processors come from different manufacturers and use fundamentally different designs. The AMD Ryzen 9 9900X belongs to the 9000 series and uses the Zen 5 architecture under the Granite Ridge codename. It is built on a 4 nm process at TSMC. The Intel Core 7 251E uses the Bartlett Lake codename and is built on a 10 nm process at Intel. These process differences are substantial, with the AMD part fabricated at a more advanced node.

The core configurations differ significantly. The 9900X has 12 cores and 24 threads, while the 251E has 24 cores and 32 threads. The Intel part has double the core count but only 8 additional threads, indicating a mix of cores with and without simultaneous multithreading. The AMD part has a 1:2 core-to-thread ratio across all 12 cores.

Clock speeds show a contrast in base frequency. The 9900X runs a 4.40 GHz base clock with a 5.60 GHz boost clock. The 251E runs a 2.10 GHz base clock with a matching 5.60 GHz boost clock. Both reach the same maximum boost frequency, but the AMD processor sustains a much higher base clock. Thermal design power also differs markedly: the 9900X is rated at 120 watts, while the 251E is rated at 65 watts. The Intel part draws half the rated power despite having more cores, which reflects its lower base clock and the efficiency profile of its core configuration.

Cache hierarchies differ in capacity and organization. Both processors use 80 KB of L1 cache per core. The L2 cache is 1 MB per core on the 9900X and 2 MB per core on the 251E, giving the Intel part twice the L2 per core. The L3 cache reverses this trend: the 9900X has 64 MB of L3 cache, while the 251E has 36 MB shared. The AMD part carries significantly more last-level cache overall.

Memory support shows the 251E accepting both DDR4 and DDR5, while the 9900X supports DDR5 only. Both use dual-channel memory buses and deliver 89.6 GB/s of memory bandwidth. Both support ECC memory. PCIe connectivity differs, with the 9900X offering Gen 5 across 24 CPU lanes and the 251E offering Gen 5 across 16 CPU lanes.

The integrated graphics differ as well. The 9900X includes Radeon Graphics, while the 251E includes UHD Graphics 770. The AMD processor has an unlocked multiplier, whereas the Intel processor is locked. Socket compatibility separates them further: the 9900X uses AMD Socket AM5, and the 251E uses Intel Socket 1700.

The die characteristics show a notable difference in physical implementation. The 9900X uses a dual-die design with 2x 70.6 mm² dies and 16,630 million transistors. The 251E uses a single 257 mm² die, with no transistor count recorded in the database. Release dates place the 9900X in August 2024 and the 251E in January 2025, a five-month gap.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core 7 251E has 24 cores and 32 threads, while the AMD Ryzen 9 9900X has 12 cores and 24 threads.

Q: How do the boost clocks compare?

A: Both processors reach a 5.60 GHz boost clock. The AMD Ryzen 9 9900X has a 4.40 GHz base clock, while the Intel Core 7 251E has a 2.10 GHz base clock.

Q: What is the average benchmark score of the Intel Core 7 251E?

A: The database records an average benchmark score of zero for the Intel Core 7 251E, with no individual benchmark results listed. The AMD Ryzen 9 9900X has an average benchmark score of 57498.

Q: How does the Ryzen 9 9900X compare to its nearest rivals?

A: The AMD EPYC 9015 is 0.1% above the 9900X in average score, the AMD EPYC 7313 is 0.2% below, the Intel Core i9-14900 is 1.1% above, and the Intel Xeon Platinum 8260M is 1.4% above.

Q: Which processor supports DDR4 memory?

A: The Intel Core 7 251E supports both DDR4 and DDR5. The AMD Ryzen 9 9900X supports DDR5 only.

Q: What are the thermal design power ratings?

A: The AMD Ryzen 9 9900X is rated at 120 watts, and the Intel Core 7 251E is rated at 65 watts.

The Verdict

The data supports different conclusions depending on what is being prioritized. For measured performance, the AMD Ryzen 9 9900X is the only processor in this comparison with recorded benchmark results. Its 92nd percentile ranking among all CPUs and an average benchmark score of 57498 place it in a competitive band with server-class processors like the AMD EPYC 9015 and EPYC 7313, as well as the Intel Core i9-14900. The margins to these rivals are tight, all within 1.4%, which indicates the 9900X delivers near the top of its performance neighborhood.

For the Intel Core 7 251E, the database contains no benchmark data, so no performance claims can be substantiated from measurements. The specification sheet shows a 24-core, 32-thread processor with a 65 watt TDP, DDR4 and DDR5 memory support, and a locked multiplier. These characteristics suggest a design aimed at high core counts with lower power draw, but without measured scores, the database cannot verify how that translates into real-world results.

The architectural differences are stark. The 9900X uses a 4 nm process from TSMC, 12 cores with simultaneous multithreading, 64 MB of L3 cache, and a 120 watt TDP. The 251E uses a 10 nm process from Intel, 24 cores with partial multithreading, 36 MB of L3 cache, and a 65 watt TDP. The AMD part has higher base clocks and more cache, while the Intel part has more cores and a lower power envelope. Both reach the same 5.60 GHz boost clock, and both deliver 89.6 GB/s of memory bandwidth.

The choice between these two processors depends on whether measured performance or specified core count matters more. The database shows the 9900X delivering strong results across rendering, encryption, math, and single-threaded workloads, with a percentile ranking that places it among the top processors in the database. The 251E offers a higher core count and lower power rating on paper, but its absence from the benchmark records means the database cannot confirm its performance level. For any workload where measured results are required, the 9900X is the only option with supporting data.

Specification Differences

| Specification | AMD Ryzen 9 9900X | Intel Core 7 251E |

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

| Cores | 12 | 24 |

| Threads | 24 | 32 |

| Base clock | 4.40 GHz | 2.10 GHz |

| Boost clock | 5.60 GHz | 5.60 GHz |

| TDP | 120 W | 65 W |

| Socket | AMD Socket AM5 | Intel Socket 1700 |

| Codename | Granite Ridge | Bartlett Lake |

| Process node | 4 nm | 10 nm |

| Foundry | TSMC | Intel |

| Die size | 2x 70.6 mm² | 257 mm² |

| Transistors | 16,630 million | Not recorded |

| L2 cache | 1 MB (per core) | 2 MB (per core) |

| L3 cache | 64 MB | 36 MB (shared) |

| Memory support | DDR5 | DDR4, DDR5 |

| PCIe | Gen 5, 24 lanes (CPU only) | Gen 5, 16 lanes (CPU only) |

| Integrated graphics | Radeon Graphics | UHD Graphics 770 |

| Multiplier unlocked | Yes | No |

| Release date | 2024-08-14 | 2025-01-12 |

| Launch MSRP | $499 | $384 |

| Percentile vs all CPUs | 92 | 50 |

| Average benchmark score | 57498 | 0 |

The two processors share identical L1 cache per core at 80 KB, both use dual-channel memory buses, both support ECC memory, and both deliver 89.6 GB/s of memory bandwidth. Their boost clocks match at 5.60 GHz, and both are classified as desktop processors with active production status.