AMD Ryzen 5 PRO 9645 vs Intel Core i9-14900 Comparison

The AMD Ryzen 5 PRO 9645 and the Intel Core i9-14900 represent two distinct philosophies in CPU design, facing off with starkly different core counts and architectural approaches. Benchmark data shows a clear split between raw parallel throughput and highly optimized single-thread execution, with the Intel part dominating most multi-threaded workloads while the AMD chip counters with notable efficiency in specific tasks. Both processors sit at the 92nd percentile among all CPUs, yet their average benchmark scores tell different stories, with the AMD part averaging 58,916 and the Intel part averaging 58,115.

Head-to-Head Benchmarks

The most lopsided victories in this comparison belong to the Intel Core i9-14900, which leverages its 24 cores and 32 threads to decisive effect. In PassMark's floating point math test, Intel scores 120,262 against AMD's 62,720, a 47.8% advantage that underscores the sheer throughput advantage of having four times the physical cores. Similarly, integer math shows Intel at 175,010 versus 93,019, a 46.8% gap. These are not marginal differences; they represent workloads where the Intel part completes tasks nearly twice as fast.

Data compression follows the same pattern, with Intel scoring 550,271 against AMD's 363,736, a 33.9% deficit for the Ryzen part. Encryption is even more one-sided, with Intel at 33,540 versus AMD's 17,599, a 47.5% gap. Random string sorting also favors Intel heavily, 61,060 to 38,410, a 37.1% difference. The PassMark multithread score shows Intel at 44,578 against 31,434, a 29.5% lead, while physics simulation gives Intel a 21.8% edge with 2,486 points versus 1,945.

However, the AMD Ryzen 5 PRO 9645 claims three wins, and they are instructive. The single-thread score shows AMD at 4,636 versus Intel's 4,323, a 7.2% advantage. This is notable because it demonstrates that AMD's Zen 5 architecture, despite having only 6 cores, delivers superior per-thread performance. The find prime numbers test shows AMD at 235 versus 188, a 25% win, suggesting an advantage in algorithms that benefit from lower latency or more efficient branch prediction. Extended instructions show the closest contest, with AMD at 29,705 and Intel at 30,624, a mere 3% difference favoring Intel.

Where Each One Wins

The Intel Core i9-14900 is the clear choice for heavily parallel workloads. Any task that can saturate 24 cores and 32 threads will see substantial benefits. The data shows this in floating point math, integer math, encryption, and data compression, where Intel holds leads between 29.5% and 47.8%. For content creation, scientific computing, or any batch processing that scales across cores, the Intel part's multithread score of 44,578 versus 31,434 makes it the stronger option.

The AMD Ryzen 5 PRO 9645 wins where single-thread efficiency and specific algorithmic patterns matter. Its 7.2% single-thread advantage means applications that rely on a few fast cores, such as legacy software, game physics, or interactive workloads, will feel snappier on the AMD platform. The find prime numbers result, a 25% victory, suggests an edge in latency-sensitive or branch-heavy code. The extended instructions test, nearly a tie, indicates that AMD's architecture is not far behind even in vectorized workloads, despite the massive core count difference.

Architecture Differences

The two CPUs could not be more different in construction. The AMD Ryzen 5 PRO 9645 uses a 4 nm process from TSMC, packing 8,315 million transistors into a 70.6 mm² die. It features 6 cores and 12 threads based on the Zen 5 (Granite Ridge) architecture. Its cache layout includes 80 KB of L1 per core, 1 MB of L2 per core, and 32 MB of shared L3. The Intel Core i9-14900 uses Intel's 10 nm process, with a 257 mm² die size and no transistor count listed. It offers 24 cores and 32 threads on the Raptor Lake Refresh architecture, with 80 KB L1 per core, 2 MB L2 per core, and 36 MB of shared L3.

Memory support differs significantly. The AMD part supports only DDR5 with dual-channel memory and a bandwidth of 89.6 GB/s. The Intel part supports both DDR4 and DDR5, also dual-channel, but no bandwidth figure is listed. Both support ECC memory. PCIe connectivity also varies, with AMD offering Gen 5 with 24 CPU lanes, while Intel provides Gen 5 with 16 CPU lanes. Integrated graphics differ as well, with AMD featuring Radeon Graphics and Intel featuring UHD Graphics 770.

The clock speeds tell a story of different design goals. AMD's base clock is 3.90 GHz with a boost of 5.40 GHz, while Intel's base is a much lower 2.00 GHz but boosts to 5.80 GHz. This suggests Intel relies on aggressive boosting under load, while AMD maintains a higher sustained base frequency. Both have a 65 W TDP, though this is surprising given the core count disparity. The AMD part is marked for the server/workstation segment, while Intel targets desktop. AMD uses Socket AM5; Intel uses Socket 1700.

FAQ

Q: Which CPU has the higher average benchmark score?

A: The AMD Ryzen 5 PRO 9645 averages 58,916, slightly ahead of the Intel Core i9-14900's 58,115, a difference of about 1.4%.

Q: How large is the single-thread performance gap?

A: The AMD part scores 4,636 in PassMark single-thread versus Intel's 4,323, giving AMD a 7.2% advantage.

Q: Does the Intel part win all multithreaded tests?

A: No, the AMD part wins PassMark find prime numbers with 235 versus 188, a 25% margin, despite Intel winning the overall multithread score by 29.5%.

Q: What is the core and thread difference between the two?

A: The Intel Core i9-14900 has 24 cores and 32 threads, while the AMD Ryzen 5 PRO 9645 has 6 cores and 12 threads.

Q: Which CPU supports more memory types?

A: The Intel part supports both DDR4 and DDR5, while the AMD part supports only DDR5.

Q: How do their nearest rivals compare?

A: The AMD part's closest rival is the AMD Ryzen AI 9 HX 470 with a 0.2% delta, while the Intel part's closest rival is the Intel Xeon Platinum 8260M with a -0.4% delta.

The Verdict

The data paints a clear picture for different use cases. The Intel Core i9-14900 is the overwhelming choice for multi-threaded productivity. Its wins in eight out of eleven head-to-head benchmarks, including decisive margins in floating point math (47.8%), encryption (47.5%), and integer math (46.8%), make it the superior part for rendering, compiling, or any workload that can use 24 cores. The multithread score of 44,578 versus 31,434 reinforces this.

The AMD Ryzen 5 PRO 9645 is the pick for single-thread-sensitive applications. Its 7.2% lead in single-thread performance and 25% win in prime number finding suggest that legacy software, interactive tools, and latency-critical tasks will perform better. The near-tie in extended instructions (3% deficit) shows that AMD's architecture is not far behind even in modern vectorized code, despite having only a quarter of the cores.

For a user who prioritizes raw throughput above all, the Intel part is the data-backed recommendation. For someone who values responsiveness in single-threaded tasks or needs the efficiency of a smaller die, the AMD part is justified. The 92nd percentile ranking for both means either is a strong performer, but the benchmark deltas show that the Intel part's advantages are far larger in magnitude than the AMD part's wins.

Specification Differences

| Specification | AMD Ryzen 5 PRO 9645 | Intel Core i9-14900 |

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

| Cores | 6 | 24 |

| Threads | 12 | 32 |

| Base Clock | 3.90 GHz | 2.00 GHz |

| Boost Clock | 5.40 GHz | 5.80 GHz |

| Process Node | 4 nm | 10 nm |

| Foundry | TSMC | Intel |

| Die Size | 70.6 mm² | 257 mm² |

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

| L3 Cache | 32 MB (shared) | 36 MB (shared) |

| Memory Support | DDR5 | DDR4, DDR5 |

| Memory Bandwidth | 89.6 GB/s | Not listed |

| PCIe Lanes | Gen 5, 24 Lanes | Gen 5, 16 Lanes |

| Integrated Graphics | Radeon Graphics | UHD Graphics 770 |

| Socket | AMD Socket AM5 | Intel Socket 1700 |

| Market Segment | Server/Workstation | Desktop |

| Release Date | 2025-09-15 | 2024-01-07 |

| Launch MSRP | Not listed | $549 |

| Part Number | 100-000001409 | SRN3V |