AMD EPYC 4464P vs AMD EPYC 9184X Comparison

Head-to-Head Benchmarks

The recorded data shows a decisive overall victory for the AMD EPYC 9184X, which wins 14 of the 17 head-to-head comparisons. However, the margin of victory is not uniform, and the AMD EPYC 4464P claims three important wins that reveal a clear performance split between multi-threaded server workloads and high-frequency single-thread tasks.

In the Cinebench suite, the EPYC 9184X leads by a consistent 0.7% margin across all six tests. In Cinebench R23 multi-core, the 9184X scores 40515 against 40215 for the 4464P. The single-core results are similarly close: 5719 versus 5677 in R23 single-core. These differences are small enough to suggest that the two processors are functionally equivalent for lightly threaded CPU rendering tasks, even though the 9184X claims the win.

The Passmark results tell a more nuanced story. The 9184X delivers its largest advantage in the physics test, scoring 6674 against 2873, a massive 132.3% lead. This is the single biggest delta in the entire comparison and indicates a significant advantage for the 9184X in workloads that stress physical simulation and rigid-body calculations. The 9184X also dominates in prime number finding (465 versus 343, a 35.6% lead) and extended instructions (43562 versus 39359, a 10.7% lead). Data compression favors the 9184X by 7.1% (614873 versus 574304), while random string sorting goes to the 9184X by 13.8% (79913 versus 70200). Floating point math is closer, with the 9184X ahead by only 2.6% (95476 versus 93090). Encryption also goes to the 9184X, with a 4.4% lead (37376 versus 35816).

The EPYC 4464P wins three tests, and its victories are substantial. In single-thread Passmark, the 4464P scores 4146 against 2822 for the 9184X, a 31.9% advantage. This is the single largest win for either processor in either direction. The 4464P also wins integer math, scoring 160410 versus 157483, a 1.8% lead. The third win is in multithread, but it is marginal: 47514 versus 47665, a 0.3% difference that puts the 9184X ahead, so the 4464P only claims the integer math and single-thread wins.

The benchmark data shows a processor that is almost always faster in the aggregate, but the magnitude of the wins varies dramatically. The 9184X wins by a hair in Cinebench, but by a landslide in physics and prime numbers. The 4464P, meanwhile, is overwhelmingly better in single-thread performance, which can be decisive for certain professional applications.

Architecture Differences

The two processors share the same Zen 4 architecture, but they are built in different configurations and for different platforms. The 9184X is part of the EPYC 9004 series, codenamed Genoa-X, and is manufactured on TSMC's 5 nm process. It is assembled from 8 chiplets, each 72 mm², for a total of 90,160 million transistors. The 4464P belongs to the EPYC 4004 series, codenamed Raphael, and uses a dual-chiplet design with 13,140 million transistors on two 71 mm² dies.

The most dramatic difference is the L3 cache. The 9184X features 768 MB of shared L3 cache, which is an enormous pool designed for large in-memory datasets and high-core-count virtualization. The 4464P has 64 MB of shared L3, which is 12 times smaller. This cache disparity is likely the primary driver behind the 9184X's large wins in cache-sensitive workloads like prime number search and random string sorting.

Another key difference is the memory subsystem. The 9184X supports twelve channels of DDR5 memory with a peak bandwidth of 460.8 GB/s. The 4464P supports dual-channel memory, limiting its bandwidth to 83.2 GB/s. This is a 5.5-fold difference in theoretical memory throughput, which explains the 9184X's strong showing in data compression and other memory-bandwidth-bound tasks.

The socket and platform differ as well. The 9184X uses AMD Socket SP5, while the 4464P uses the desktop-oriented AMD Socket AM5. The 9184X offers 128 PCIe Gen 5 lanes, whereas the 4464P provides 28 lanes. The 4464P includes integrated Radeon Graphics, while the 9184X has no integrated graphics listed.

The 9184X is a 320-watt part with a base clock of 3.55 GHz and a boost clock of 4.20 GHz. The 4464P, by contrast, has a 65-watt TDP with a much higher boost clock of 5.40 GHz and a base of 3.70 GHz. This clock speed difference directly explains the 4464P's single-thread advantage. The 9184X has 16 cores and 32 threads, while the 4464P has 12 cores and 24 threads. Both support ECC memory.

FAQ

Q: Which processor has a larger L3 cache?

A: The AMD EPYC 9184X has 768 MB of shared L3 cache, while the AMD EPYC 4464P has 64 MB.

Q: What is the memory bandwidth difference?

A: The 9184X supports twelve-channel DDR5 with up to 460.8 GB/s, while the 4464P has dual-channel DDR5 with 83.2 GB/s.

Q: Which one has a higher boost clock?

A: The AMD EPYC 4464P boosts to 5.40 GHz, compared to 4.20 GHz for the EPYC 9184X.

Q: How many PCIe lanes does each offer?

A: The 9184X provides 128 PCIe Gen 5 lanes, whereas the 4464P provides 28 PCIe Gen 5 lanes.

Q: Which one has integrated graphics?

A: Only the AMD EPYC 4464P includes a Radeon Graphics solution; the 9184X has no integrated graphics in the database.

Q: What is the TDP of each part?

A: The 9184X has a 320 W TDP, and the 4464P has a 65 W TDP.

Specification Differences

| Specification | AMD EPYC 9184X | AMD EPYC 4464P |

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

| Series | EPYC 9000 series | EPYC 4000 series |

| Codename | Genoa-X | Raphael |

| Generation | EPYC (Zen 4 (Genoa)) | EPYC (Zen 4 (Raphael)) |

| Cores | 16 | 12 |

| Threads | 32 | 24 |

| Base Clock | 3.55 GHz | 3.70 GHz |

| Boost Clock | 4.20 GHz | 5.39 GHz |

| TDP | 320 W | 65 W |

| Socket | AMD Socket SP5 | AMD Socket AM5 |

| Process Node | 5 nm | 5 nm |

| Transistors | 90,160 million | 13,140 million |

| Die Size | 8x 72 mm² | 2x 71 mm² |

| L3 Cache | 768 MB (shared) | 64 MB (shared) |

| Memory Bus | Twelve-channel | Dual-channel |

| Memory Bandwidth | 460.8 GB/s | 83.2 GB/s |

| PCIe | Gen 5, 128 Lanes | Gen 5, 28 Lanes |

| Integrated Graphics | None | Radeon Graphics |

| Part Number | Not listed | 100-000001478 |

| Launch MSRP | $4928 | $429 |

Where Each One Wins

The EPYC 9184X is the clear choice for any workload that depends on massive cache and high memory bandwidth. Its 768 MB L3 cache and twelve-channel memory controller make it ideal for database workloads, large in-memory analytics, and heavy virtualization environments where multiple VMs compete for memory throughput. The 132.3% lead in physics and the 35.6% lead in prime number search show that it excels at compute-heavy, cache-hungry tasks. The 9184X also wins in data compression and random string sorting, which are classic memory-bandwidth-bound operations. For any server application that processes large blocks of data, the 9184X is the stronger choice.

The AMD EPYC 4464P wins where single-thread performance is the bottleneck. Its 31.9% lead in single-thread performance is substantial, and it also edges out the 9184X in integer math. This makes the 4464P better suited for workloads that rely on fast single-core execution, such as certain database operations, legacy software that does not scale well across cores, or light-threaded development workloads. The integrated graphics is also a practical advantage for low-power workstations or headless servers that need a simple display output without a discrete GPU.

The trade-off is stark. The 9184X is a 320 W server part with 128 PCIe Gen 5 lanes and twelve-channel memory, built to feed massive compute and I/O. The 4464P is a 65 W part with 28 lanes and dual-channel memory, built for efficiency and fast single-thread execution. The 9184X wins the overall benchmark count, but the 4464P wins the single-thread test by a wide margin, which should not be ignored for applications that are latency-sensitive.

In summary: choose the 9184X for scale-out virtualization, data compression, and physics simulations. Choose the 4464P for single-thread-heavy workloads, low-power deployments, or any environment where a higher boost clock is more valuable than raw core counts and cache size.