AMD EPYC 4465P vs Intel Core i9-13900 Comparison

The AMD EPYC 4465P and Intel Core i9-13900 are both 96th-percentile CPUs, but they approach performance from opposite ends of the design spectrum. In average benchmark score, the EPYC 4465P posts 67008 against the i9-13900's 66508, a 0.8% lead for AMD. Across 17 head-to-head tests, the EPYC wins 14 and the i9 wins 3. The EPYC is a 12-core, 24-thread Zen 5 part on TSMC's 4nm process; the i9 is a 24-core, 32-thread Raptor Lake chip on Intel's 10nm node. Both carry a 65W TDP, but their architectures, memory support, and PCIe lane counts diverge sharply.

Head-to-Head Benchmarks

The EPYC 4465P sweeps the Cinebench suite. In R15 multi-core, it scores 4326 versus the i9's 3913, a 10.6% advantage. Single-core R15 goes 610 to 552 (10.5% ahead). R20 multi-core: 18025 vs 16307, again 10.5%. R20 single-core: 2544 vs 2302 (10.5%). R23 multi-core: 42918 vs 38828 (10.5%), and R23 single-core: 6059 vs 5481 (10.5%). The pattern is consistent—the EPYC leads by roughly 10.5% across all Cinebench iterations, both multi- and single-threaded.

PassMark results show a similar split, but with wider deltas in specific workloads. The EPYC wins multithread 50492 to 45680 (10.5%), single-thread 4611 to 4309 (7%), integer math 176946 to 176107 (0.5%), random string sorting 69907 to 64396 (8.6%), and extended instructions 41348 to 32760 (26.2%). The two biggest gaps are in find prime numbers (325 vs 186, a 74.7% EPYC lead) and physics (4043 vs 2484, a 62.8% lead). These are heavily integer and logic-bound tasks, where Zen 5's per-core efficiency shines.

The i9-13900 takes three wins, all in PassMark. Data compression goes to Intel by a hair: 577285 vs 574486, a 0.5% edge. Data encryption is more decisive: 35242 vs 33171, a 5.9% lead. The largest Intel win is floating point math: 120492 vs 104712, a 13.1% advantage. That suggests the i9's hybrid core layout and higher boost clock (5.60 vs 5.40) help in FP-heavy code, but the EPYC's IPC advantage dominates most other workloads.

FAQ

Q: Which processor has the higher multi-core Cinebench R23 score?

A: The EPYC 4465P scores 42918, the i9-13900 scores 38828, a 10.5% advantage for AMD.

Q: Which processor has more cores?

A: The i9-13900 has 24 cores and 32 threads, while the EPYC 4465P has 12 cores and 24 threads.

Q: Which processor has more L3 cache?

A: The EPYC 4465P has 64 MB shared L3, the i9-13900 has 36 MB shared L3.

Q: Which processor wins in data encryption?

A: The i9-13900 scores 35242 vs 33171 for the EPYC, a 5.9% lead for Intel.

Q: Which processor has a higher average benchmark score?

A: The EPYC 4465P averages 67008, the i9-13900 averages 66508, a 0.8% difference.

Q: Which processor has a higher boost clock?

A: The i9-13900 boosts to 5.60, the EPYC to 5.40.

Architecture Differences

The EPYC 4465P is built on Zen 5 (codenamed Grado) using TSMC's 4nm process, with a die size of 2x 70.6 mm² and 16,630 million transistors. The i9-13900 uses Raptor Lake (Raptor Lake-S) on Intel's 10nm process, with a single 257 mm² die and no transistor count listed. The EPYC has 12 cores and 24 threads; the i9 has 24 cores and 32 threads. Despite having half the cores, the EPYC wins multi-threaded Cinebench—a clear sign of Zen 5's superior IPC.

Cache layouts differ. Both have 80 KB L1 per core, but the EPYC has 1 MB L2 per core versus 2 MB per core on the i9. L3 is 64 MB shared on the EPYC, 36 MB shared on the i9. The EPYC supports only DDR5 memory with a dual-channel bus and 89.6 GB/s bandwidth; the i9 supports both DDR4 and DDR5, also dual-channel, but no bandwidth figure is provided. ECC memory is supported on both.

PCIe connectivity is another split. The EPYC offers Gen 5 with 24 CPU lanes; the i9 offers Gen 5 with 16 lanes. Integrated graphics differ: the EPYC has Radeon Graphics, the i9 has UHD Graphics 770. Sockets are AM5 for the EPYC and LGA1700 for the i9. The EPYC is aimed at server/workstation, the i9 at desktop. Release dates: EPYC on 2025-05-12, i9 on 2023-01-03. Base clocks are 3.40 for the EPYC and 2000.00 for the i9, with boosts of 5.40 and 5.60 respectively.

The Verdict

The data points to the EPYC 4465P as the stronger overall performer. It wins 14 of 17 benchmarks, including every Cinebench test, PassMark multithread, integer math, physics, prime number finding, extended instructions, random string sorting, and single-thread. Its average score is 0.8% higher than the i9's, and it does this with half the cores. The i9's only clear wins are floating point math (13.1% ahead), data encryption (5.9% ahead), and data compression (0.5% ahead). For anyone running rendering, scientific simulations, integer-heavy workloads, or general multithreaded productivity, the EPYC is the better choice. The i9 remains competitive for FP-heavy tasks like certain numerical analysis or encryption/compression pipelines. The EPYC also brings more PCIe lanes (24 vs 16) and double the L3 cache (64 MB vs 36 MB). The i9's higher boost clock (5.60 vs 5.40) does not translate into a win in single-threaded Cinebench—the EPYC leads there by 7% in PassMark single-thread.

Specification Differences

| Field | AMD EPYC 4465P | Intel Core i9-13900 |

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

| Cores | 12 | 24 |

| Threads | 24 | 32 |

| Base clock | 3.40 | 2000.00 |

| Boost clock | 5.40 | 5.60 |

| Socket | AMD Socket AM5 | Intel Socket 1700 |

| Architecture | Zen 5 | Raptor Lake |

| Process node | 4 nm | 10 nm |

| Foundry | TSMC | Intel |

| Die size | 2x 70.6 mm² | 257 mm² |

| Transistors | 16,630 million | — |

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

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

| Memory support | DDR5 | DDR4, DDR5 |

| Memory bandwidth | 89.6 GB/s | — |

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

| Integrated graphics | Radeon Graphics | UHD Graphics 770 |

| Market segment | Server/Workstation | Desktop |

| Release date | 2025-05-12 | 2023-01-03 |

| Launch MSRP | $399 | $549 |

Where Each One Wins

The EPYC 4465P is the clear winner in Cinebench (all versions), PassMark multithread, single-thread, integer math, random string sorting, extended instructions, physics, and prime number finding. It also wins PassMark multithread by 10.5% and physics by 62.8%, making it ideal for CPU-bound rendering, physics simulation, and integer-heavy compute. The 74.7% lead in find prime numbers highlights its strength in primality testing and similar algorithmic tasks.

The Intel Core i9-13900 wins in data compression, data encryption, and floating point math. Its 13.1% advantage in floating point math (120492 vs 104712) makes it the better pick for FP-heavy scientific code, while the 5.9% edge in encryption and 0.5% in compression suit workloads like database encryption or archive management. The i9 also has more cores (24 vs 12) and a higher boost clock (5.60 vs 5.40), but those advantages do not translate into broader benchmark success—the EPYC's architecture compensates with higher per-core efficiency and a larger L3 cache. For most general-purpose compute, the EPYC is the superior processor; for niche FP or encryption/compression tasks, the i9 holds the edge.