AMD EPYC 4584PX vs AMD EPYC 7443P Comparison

The AMD EPYC 4584PX and AMD EPYC 7443P are two very different server processors that land in the same performance tier, but achieve their results through opposing design philosophies. The 4584PX is a newer, higher-clocked 16-core chip built on Zen 4, while the 7443P is a 24-core Zen 3 part with significantly more memory bandwidth. Benchmark data shows the 4584PX wins 11 of 17 head-to-head tests, yet the 7443P counters with decisive victories in specific workloads, making the choice entirely dependent on the intended application.

Head-to-Head Benchmarks

The most striking advantage for the AMD EPYC 4584PX comes in single-threaded performance. In the PassMark single-thread test, the 4584PX scores 3795 against the 7443P’s 2907, a massive 30.5% lead. This is the largest delta between the two processors in any benchmark. The same pattern holds across all Cinebench versions: the 4584PX wins R15 single-core (733 vs 689), R20 single-core (3055 vs 2871), and R23 single-core (7274 vs 6837), each by a consistent 6.4%. This indicates a fundamental per-core advantage for the Zen 4 architecture, driven by its higher 5.70 GHz boost clock compared to the 7443P’s 4.00 GHz.

In multi-threaded Cinebench workloads, the 4584PX maintains its edge despite having only 16 cores versus 24. It wins Cinebench R15 multi-core (5193 vs 4881), R20 multi-core (21640 vs 20341), and R23 multi-core (51524 vs 48433), again with a uniform 6.4% delta. The PassMark multithread test also goes to the 4584PX, but by a much narrower margin: 58117 vs 56981, a 2% difference. These results suggest that the 4584PX’s per-core efficiency and high clock speeds can compensate for the 7443P’s additional eight cores in many parallel workloads.

The 7443P fights back in several PassMark sub-tests. Its biggest win is in data encryption, where it scores 57263 versus 45902, a 19.8% advantage. It also leads in integer math (232632 vs 201919, a 13.2% margin), data compression (820859 vs 741648, a 9.6% edge), and random string sorting (95581 vs 87690, an 8.3% lead). The 7443P further wins floating-point math (129932 vs 121460, 6.5% ahead) and physics (4748 vs 4574, 3.7% ahead). These wins are concentrated in workloads that scale with core count and memory bandwidth, where the 7443P’s 24 cores and eight-channel DDR4 memory provide a structural advantage.

The 4584PX wins the remaining tests. It takes extended instructions (53774 vs 48213, an 11.5% lead) and find prime numbers (441 vs 410, a 7.6% edge). Across the full benchmark suite, the 4584PX secures 11 wins against 6 for the 7443P, but the magnitude of the 7443P’s victories in encryption and integer math is substantial. The average benchmark scores reflect this split: the 4584PX averages 83090, which is 1.8% higher than the 7443P’s 81661. Both chips sit at the 96th percentile among all CPUs, indicating they belong to the same elite performance class despite their architectural differences.

Architecture Differences

The two processors come from entirely different platform generations. The 4584PX is built on the Zen 4 architecture (codenamed Raphael) using TSMC’s 5 nm process, while the 7443P uses Zen 3 (codenamed Milan) on a 7 nm TSMC node. The 4584PX features a die size of 2x 71 mm² with 17,840 million transistors, whereas the 7443P uses 4x 81 mm² dies containing 16,600 million transistors. The newer process node gives the 4584PX a transistor density advantage, though the 7443P’s larger physical footprint accommodates more cores.

Cache configurations differ notably. Both have 64 KB of L1 cache per core and 128 MB of shared L3 cache. The L2 cache differs: the 4584PX has 1 MB per core, while the 7443P has 512 KB per core. The 4584PX also includes a 3D V-Cache slice of 64 MB, which is layered on top of the standard L3. This additional cache is likely a key factor in the 4584PX’s strong single-threaded and extended-instructions results.

Memory architecture is a major differentiator. The 4584PX supports DDR5 memory on a dual-channel bus, delivering 83.2 GB/s of bandwidth. The 7443P uses DDR4 on an eight-channel bus, providing 204.8 GB/s — 2.5 times the memory bandwidth. This explains the 7443P’s dominance in data compression, encryption, and integer math, which are often memory-bandwidth-bound. The 4584PX uses AMD Socket AM5, while the 7443P uses Socket SP3. PCIe capabilities also differ: the 4584PX offers Gen 5 with 28 lanes, whereas the 7443P provides Gen 4 with 128 lanes, giving the older chip more total PCIe lanes but at a slower generation.

The 4584PX integrates Radeon Graphics, while the 7443P has no integrated graphics. Both support ECC memory, and neither has an unlocked multiplier. Power characteristics are not directly comparable from the data, but the 4584PX has a TDP of 120 and the 7443P has a TDP of 200. The 4584PX was released on May 20, 2024, while the 7443P launched on March 14, 2021, making the 4584PX the newer design by over three years.

FAQ

Q: Which processor has better single-threaded performance?

A: The AMD EPYC 4584PX is decisively better in single-threaded workloads. It scores 3795 in PassMark single-thread versus 2907 for the 7443P, a 30.5% advantage. It also wins every single-core Cinebench test by 6.4%.

Q: Why does the AMD EPYC 7443P win some multi-threaded tests despite having a lower average benchmark score?

A: The 7443P has 24 cores and 48 threads versus 16 cores and 32 threads for the 4584PX. It also has 204.8 GB/s of memory bandwidth compared to 83.2 GB/s. These advantages let it win bandwidth-sensitive tests like data encryption (57263 vs 45902) and integer math (232632 vs 201919), even though the 4584PX wins most multi-threaded Cinebench tests.

Q: What role does the 3D V-Cache play in the AMD EPYC 4584PX?

A: The 4584PX includes a 64 MB V-Cache slice in addition to its 128 MB shared L3 cache. This extra cache is likely a contributor to its strong performance in extended instructions (53774 vs 48213) and find prime numbers (441 vs 410), where larger working sets benefit from faster cache access.

Q: How do the memory systems differ between the two processors?

A: The 4584PX uses dual-channel DDR5 memory with 83.2 GB/s bandwidth, while the 7443P uses eight-channel DDR4 with 204.8 GB/s bandwidth. The 7443P has 2.5 times the memory bandwidth, which is a primary reason for its wins in data-intensive PassMark tests.

Q: Which processor has the higher average benchmark score?

A: The 4584PX has an average benchmark score of 83090, which is 1.8% higher than the 7443P’s 81661. Both processors are at the 96th percentile of all CPUs.

Q: Are both processors still in production?

A: Yes, both the AMD EPYC 4584PX and the AMD EPYC 7443P have an active production status, according to the data.

Specification Differences

| Specification | AMD EPYC 4584PX | AMD EPYC 7443P |

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

| Cores | 16 | 24 |

| Threads | 32 | 48 |

| Base Clock | 4.20 GHz | 2.85 GHz |

| Boost Clock | 5.70 GHz | 4.00 GHz |

| TDP | 120 | 200 |

| Socket | AMD Socket AM5 | AMD Socket SP3 |

| Architecture | Zen 4 | Zen 3 |

| Process Node | 5 nm | 7 nm |

| Transistors | 17,840 million | 16,600 million |

| Die Size | 2x 71 mm² | 4x 81 mm² |

| L2 Cache | 1 MB (per core) | 512 KB (per core) |

| V-Cache | 1x 64MB Slice | None |

| Memory Support | DDR5 | DDR4 |

| Memory Bus | Dual-channel | Eight-channel |

| Memory Bandwidth | 83.2 GB/s | 204.8 GB/s |

| PCIe | Gen 5, 28 Lanes | Gen 4, 128 Lanes |

| Integrated Graphics | Radeon Graphics | None |

| Release Date | 2024-05-20 | 2021-03-14 |

| Launch MSRP | $699 | $1337 |

| Part Number | 100-000001481 | 100-000000342100-100000342WOF |

Where Each One Wins

The AMD EPYC 4584PX is the clear winner in single-threaded and lightly-threaded workloads. Its 30.5% lead in PassMark single-thread and consistent 6.4% wins across all Cinebench single-core tests make it the better choice for applications with heavy per-core demands, such as database transactions, web serving, or any workload with low parallelism. It also wins in extended instructions, suggesting an edge in SIMD-heavy code. The 4584PX’s integrated Radeon Graphics and lower TDP of 120 make it suitable for systems where a discrete GPU is not needed and power efficiency is prioritized.

The AMD EPYC 7443P wins in throughput-oriented, memory-bandwidth-heavy workloads. Its 19.8% lead in data encryption, 13.2% in integer math, and 9.6% in data compression indicate it is better suited for cryptographic tasks, data processing pipelines, and compression workloads that can fully utilize its 24 cores and 204.8 GB/s of memory bandwidth. It also wins floating-point math and physics, making it a strong candidate for scientific simulations and rendering tasks that scale with core count and memory throughput. The 7443P’s 128 PCIe Gen 4 lanes provide greater expansion capability for storage or networking cards.

The Verdict

The benchmark data presents a clear split. For workloads that are latency-sensitive, single-threaded, or lightly parallel, the AMD EPYC 4584PX is the superior processor. Its 30.5% single-thread advantage and 6.4% Cinebench multi-core wins, achieved with fewer cores, demonstrate that Zen 4’s IPC gains and 5.70 GHz boost clock deliver real-world benefits. The 3D V-Cache adds further headroom for cache-sensitive applications.

For workloads that are massively parallel and memory-bandwidth-bound, the AMD EPYC 7443P is the better choice. Its 24 cores, 48 threads, and 204.8 GB/s of memory bandwidth translate directly into wins in encryption, integer math, and data compression. The 7443P’s 19.8% encryption lead and 13.2% integer math advantage are substantial enough to outweigh the 4584PX’s wins in other areas for users with these specific needs.

The average benchmark scores favor the 4584PX by 1.8% (83090 vs 81661), and it wins 11 of 17 head-to-head tests. However, the 7443P’s wins come in categories with large deltas, meaning users in those niches will see outsized benefits. The choice reduces to architecture: adopt the newer Zen 4 platform with its higher clocks and DDR5 memory, or leverage the older Zen 3 chip’s core count and eight-channel memory bandwidth. Both are elite performers at the 96th percentile, but they serve different computational profiles.