AMD EPYC 4584PX vs Intel Xeon w5-2565X Comparison

The AMD EPYC 4584PX and Intel Xeon w5-2565X are both active server/workstation processors aimed at demanding professional workloads, but the benchmark data reveals a clear performance hierarchy. The AMD part takes 15 of the 17 head-to-head comparisons, often by substantial margins, while the Intel chip shows dominance only in specific math-heavy tasks. This analysis breaks down where each processor excels, what the architectural differences mean, and which one the data suggests for different use cases.

Head-to-Head Benchmarks

The most striking pattern is the AMD EPYC 4584PX's consistent victory across Cinebench workloads. In Cinebench R23 multi-core, the AMD scores 51,524 against Intel's 44,112, a 16.8% advantage. The same 16.8% delta repeats across R15, R20, and R23 multi-core tests, with the AMD scoring 5,193 vs 4,446 in R15 and 21,640 vs 18,527 in R20. Single-core Cinebench results follow the same trend, with the AMD leading by 16.9% in R15 (733 vs 627) and 16.8% in R20 (3,055 vs 2,615) and R23 (7,274 vs 6,227). This uniformity indicates a fundamental clock-speed and IPC advantage rather than workload-specific optimization.

The PassMark suite shows a more varied picture. The AMD EPYC 4584PX wins data compression by a narrow 2.1% margin (741,648 vs 726,133), but its lead expands dramatically in other tests. Data encryption shows a 26.2% advantage (45,902 vs 36,365), and physics simulation is a blowout at 74.4% (4,574 vs 2,622). The largest single margin is in prime number finding, where AMD scores 441 versus Intel's 218 — a 102.3% delta, meaning the AMD part is more than twice as fast. Integer math also favors AMD by 6.6% (201,919 vs 189,446), and random string sorting goes to AMD by 17.9% (87,690 vs 74,360). The multi-thread PassMark score confirms the overall trend, with AMD at 58,117 versus Intel's 51,897, a 12% lead.

The Intel Xeon w5-2565X takes exactly two wins, both in PassMark extended instruction tests. Extended instructions score 58,976 for Intel versus 53,774 for AMD, an 8.8% margin. Floating-point math shows the bigger gap: Intel scores 147,644 against AMD's 121,460, a 17.7% advantage. These are the only categories where Intel's architecture and higher core count translate into a clear win, likely reflecting AVX-512-style throughput where the Intel design has a structural edge.

Single-thread PassMark shows a closer race than Cinebench, with AMD ahead by only 5.6% (3,795 vs 3,595). This suggests the gap narrows in integer-heavy single-threaded code but stays wide in floating-point and complex instruction streams. Across all benchmarks, the data supports a verdict of AMD winning the majority of professional workloads, with Intel retaining a specific niche in floating-point and extended instruction execution.

Where Each One Wins

The AMD EPYC 4584PX is the clear choice for general-purpose compute, cryptography, and physics-based simulation. Its 26.2% lead in data encryption makes it well-suited for database encryption, secure communications, and any workload that relies on AES or similar cryptographic primitives. The 74.4% advantage in physics processing points to strong performance in scientific simulation, ray tracing calculations, and engineering physics solvers. Prime number finding, a classic CPU stress test, shows the AMD part is over twice as fast, which matters for number theory research and certain hashing algorithms. Its 16.8% lead across all Cinebench versions indicates strong rendering performance in tools like Cinema 4D, and the 6.6% integer math win covers general compilation and logic-heavy tasks.

The Intel Xeon w5-2565X is the specialist for floating-point and extended instruction workloads. The 17.7% floating-point math margin is significant for financial modeling, scientific computing with heavy FP64 operations, and any simulation that depends on high-throughput floating-point arithmetic. The 8.8% extended instructions win suggests Intel's implementation of AVX-512 and related instruction sets executes complex vectorized code more efficiently. For engineers running finite element analysis, computational fluid dynamics, or machine learning inference with float32/float64 tensors, the Intel part's FP advantage could outweigh its losses elsewhere. However, this is a narrow band. Across the 17 benchmarks, AMD wins 15, so the Intel Xeon only makes sense in environments where floating-point throughput is the dominant bottleneck.

Architecture Differences

These processors come from fundamentally different design philosophies. The AMD EPYC 4584PX uses Zen 4 architecture on a 5 nm TSMC process, with a Raphael codename and EPYC (Zen 4 (Raphael)) generation. It packs 16 cores and 32 threads with a base clock of 4.20 GHz and a boost of 5.70 GHz. The Intel Xeon w5-2565X uses Sapphire Rapids on Intel's 10 nm process, with 18 cores and 36 threads at a lower 3.20 GHz base and 4.80 GHz boost. The process difference is stark: 5 nm versus 10 nm gives AMD a transistor density and power efficiency advantage, reflected in the 120 W TDP for AMD versus 240 W for Intel.

Cache configurations differ sharply. AMD allocates 64 KB of L1 per core, 1 MB of L2 per core, and a massive 128 MB shared L3 cache, plus an additional 1x 64MB Slice of V-Cache. Intel provides 80 KB L1 per core, 2 MB L2 per core, but only 37.5 MB of L3 cache total. The AMD part's 128 MB L3 plus 64 MB 3D V-Cache gives it a huge data residency advantage, which explains its wins in data compression and random string sorting where large working sets fit in cache. Intel's smaller cache hierarchy is partially offset by higher per-core L2 (2 MB vs 1 MB), but the total cache capacity is far lower.

Memory architecture also diverges. AMD uses a dual-channel DDR5 bus with 83.2 GB/s bandwidth, while Intel uses quad-channel DDR5 with 153.6 GB/s. This gives Intel a theoretical memory bandwidth advantage of nearly 2x, which should benefit its floating-point and extended instruction workloads. However, the benchmark data shows that AMD's cache strategy compensates for lower raw bandwidth in most tests. PCIe connectivity strongly favors Intel: 64 Gen 5 lanes versus 28 for AMD, making Intel the better option for high-density GPU or NVMe storage configurations. The AMD part includes integrated Radeon Graphics, while Intel has no integrated GPU, requiring a discrete card for display output. Both support ECC memory, which is essential for server reliability.

Power and packaging differ as well. AMD runs on the AM5 socket with a 120 W TDP, while Intel uses the LGA 4677 socket with a 240 W TDP. The AMD processor has a locked multiplier, whereas the Intel Xeon w5-2565X has an unlocked multiplier, allowing overclocking. Release dates are close (May 2024 for AMD, August 2024 for Intel), and both are active in production. The AMD part's transistor count is 17,840 million across a 2x 71 mm² die, while Intel's transistor count and die size are not listed in the data.

FAQ

Q: Which processor is faster in multi-core rendering?

A: The AMD EPYC 4584PX wins all Cinebench multi-core tests by 16.8%. It scores 51,524 in R23 multi-core versus 44,112 for the Intel Xeon w5-2565X, and similarly leads in R15 (5,193 vs 4,446) and R20 (21,640 vs 18,527).

Q: Does the Intel Xeon w5-2565X beat AMD in any benchmark?

A: Yes, it wins exactly two of the 17 head-to-head tests. It leads in PassMark extended instructions by 8.8% (58,976 vs 53,774) and in floating-point math by 17.7% (147,644 vs 121,460).

Q: How does the AMD processor achieve such a large lead in physics simulation?

A: The AMD EPYC 4584PX scores 4,574 in PassMark physics versus 2,622 for Intel, a 74.4% advantage. This likely stems from its higher boost clock of 5.70 GHz and larger 128 MB L3 cache, though the exact mechanism is not specified in the data.

Q: What is the memory bandwidth difference, and does it matter?

A: Intel's Xeon w5-2565X has 153.6 GB/s bandwidth from quad-channel DDR5, while AMD's EPYC 4584PX has 83.2 GB/s from dual-channel. Despite Intel's 84.6% higher bandwidth, AMD wins most benchmarks, indicating cache capacity matters more than raw bandwidth in these tests.

Q: Can either processor be overclocked?

A: The Intel Xeon w5-2565X has an unlocked multiplier, allowing overclocking. The AMD EPYC 4584PX has a locked multiplier, so it cannot be overclocked. This is a notable advantage for Intel if the user wants to push beyond stock clock speeds.

Q: Which processor has more PCIe lanes?

A: The Intel Xeon w5-2565X offers 64 Gen 5 lanes, while the AMD EPYC 4584PX provides 28 Gen 5 lanes. This makes Intel significantly better for systems with many GPUs or high-speed NVMe drives.

Specification Differences

| Specification | AMD EPYC 4584PX | Intel Xeon w5-2565X |

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

| Cores | 16 | 18 |

| Threads | 32 | 36 |

| Base Clock | 4.20 GHz | 3.20 GHz |

| Boost Clock | 5.70 GHz | 4.80 GHz |

| TDP | 120 W | 240 W |

| Socket | AMD Socket AM5 | Intel Socket 4677 |

| Process Node | 5 nm | 10 nm |

| Foundry | TSMC | Intel |

| L1 Cache | 64 KB (per core) | 80 KB (per core) |

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

| L3 Cache | 128 MB (shared) | 37.5 MB |

| V-Cache | 1x 64MB Slice | N/A |

| Memory Bus | Dual-channel | Quad-channel |

| Memory Bandwidth | 83.2 GB/s | 153.6 GB/s |

| PCIe | Gen 5, 28 Lanes | Gen 5, 64 Lanes |

| Integrated Graphics | Radeon Graphics | N/A |

| Multiplier | Locked | Unlocked |

| Release Date | 2024-05-20 | 2024-08-23 |

| Launch MSRP | $699 | $1339 |

The Verdict

The benchmark data is unambiguous: the AMD EPYC 4584PX is the faster processor for the vast majority of workloads. It wins 15 of 17 tests, including all Cinebench versions, with margins ranging from 2.1% in data compression to 102.3% in prime number finding. The average benchmark score reflects this, with AMD at 83,090 versus Intel at 80,671, and AMD sits at the 96th percentile of all CPUs while Intel is at the 95th. AMD's nearest rival comparisons confirm its standing, with the EPYC 9135 only 0.1% ahead and the Core Ultra 9 285K just 0.9% behind.

Users should choose the AMD EPYC 4584PX if their work involves rendering, encryption, physics simulation, database operations, or general multi-threaded compute. The 16.8% Cinebench lead makes it the obvious pick for 3D artists and video editors, while the 26.2% encryption advantage suits security-focused servers. The 120 W TDP also means simpler cooling and lower power costs compared to Intel's 240 W part. The launch MSRP of $699 for AMD versus $1339 for Intel further reinforces the choice, though price should not be the sole factor.

The Intel Xeon w5-2565X is only the right pick for a narrow set of floating-point-intensive applications. Its 17.7% lead in floating-point math and 8.8% lead in extended instructions matter for scientific computing, financial risk models, and machine learning workloads that rely on heavy FP arithmetic. The 4x advantage in PCIe lanes (64 vs 28) also makes it superior for systems with multiple accelerators. The unlocked multiplier offers overclocking headroom that AMD lacks. However, these advantages come with a 240 W TDP and a higher launch MSRP, and they do not offset AMD's dominance elsewhere. The data says: buy AMD for general-purpose performance, buy Intel only if your specific workload demands floating-point or extended instruction throughput above everything else.