AMD EPYC 4585PX vs Intel Xeon w7-3565X Comparison

Head-to-Head Benchmarks

The benchmark comparison between the Intel Xeon w7-3565X and the AMD EPYC 4585PX reveals a clear split: AMD wins the majority of tests (10 out of 17), but Intel's victories are often by larger margins. The AMD EPYC 4585PX edges out the Intel chip in every Cinebench test, but only by a consistent 0.7% across all six runs, from R15 single-core (860 vs 854) to R23 multi-core (60451 vs 60045). These are near-ties in raw rendering workloads, suggesting the two processors deliver effectively identical Cinebench performance despite their different designs.

The largest single win for the AMD EPYC 4585PX comes in PassMark physics, where it scores 6612 against Intel's 4254, a 35.7% advantage. The AMD chip also dominates in PassMark find prime numbers, posting 547 versus 398, a 27.2% lead. In PassMark single-thread, AMD's 4538 beats Intel's 3407 by 24.9%, which aligns with its higher boost clock and newer architecture. These three wins show AMD's clear superiority in lightly threaded and integer-heavy tasks.

Intel's wins are fewer but more decisive in specific workloads. The Xeon w7-3565X leads by 42.7% in floating point math (218720 vs 153219), the largest margin of any benchmark in the comparison. It also wins extended instructions by 23.6% (85856 vs 69457), data compression by 21.6% (1075602 vs 884774), random string sorting by 16.4% (110848 vs 95210), and data encryption by 15.8% (54676 vs 47224). The Intel part takes integer math by 12.3% (279202 vs 248563) and multithread by just 2.5% (70642 vs 68908). These results indicate the Xeon w7-3565X is optimized for throughput-heavy server tasks, especially where floating point precision and compression matter.

The average benchmark score tells a similar story: Intel's 118307 sits 19.1% above AMD's 99324, but this is skewed by Intel's large wins in a few heavy workloads. The percentile ranking for both is identical at 97, meaning both chips outperform 97% of all CPUs in the database. The nearest rival data places the Xeon w7-3565X 1.6% above the AMD EPYC 9255 and 1.8% below the AMD EPYC 9384X, while the EPYC 4585PX sits 0.8% above the AMD Ryzen Threadripper PRO 5965WX and 1.7% below the AMD Ryzen Threadripper PRO 9955WX.

Architecture Differences

The fundamental architectural gap is massive. The Intel Xeon w7-3565X uses Sapphire Rapids on Intel's 10 nm process, while the AMD EPYC 4585PX uses Zen 5 on TSMC's 4 nm node. The Intel chip is built on a 4x 477 mm² die configuration, whereas AMD uses 2x 70.6 mm² chiplets, though AMD's design integrates 16,630 million transistors. The process node advantage gives AMD a significant efficiency edge, but the Intel design counters with a much larger physical footprint.

Core counts differ sharply: the Xeon w7-3565X has 32 cores and 64 threads, while the EPYC 4585PX has 16 cores and 32 threads. The Intel part doubles the core count, yet the AMD chip matches or beats it in multi-threaded Cinebench tests. This is explained by the EPYC's much higher clocks: 4.30 GHz base and 5.70 GHz boost versus Intel's 2.50 GHz base and 4.80 GHz boost. The AMD chip also has a smaller L2 cache per core (1 MB vs 2 MB) but a larger L3 pool of 128 MB versus 82.5 MB, which helps with data-heavy workloads.

Memory architecture is another major divide. The Intel Xeon w7-3565X supports eight-channel DDR5 with 307.2 GB/s of bandwidth, while the AMD EPYC 4585PX is limited to dual-channel DDR5 at 89.6 GB/s. This is a 3.4x bandwidth advantage for Intel, which explains its wins in memory-sensitive tests like data compression and encryption. PCIe lanes also favor Intel: 112 Gen 5 lanes versus AMD's 24, making the Xeon the clear choice for systems with many GPUs or NVMe drives.

The AMD EPYC 4585PX includes integrated Radeon Graphics, while the Intel Xeon w7-3565X has no integrated graphics. The Intel part is multiplier-unlocked, allowing overclocking, while the AMD chip is locked. The AMD part uses the AMD Socket AM5, a consumer-oriented socket, whereas Intel uses the workstation-class Socket 4677. The EPYC 4585PX belongs to the EPYC 4005 series with the Grado codename, while Intel's generation is Xeon W (Sapphire Rapids).

Where Each One Wins

The AMD EPYC 4585PX wins in single-threaded and lightly threaded workloads. Its 24.9% lead in PassMark single-thread, 35.7% lead in physics, and 27.2% lead in prime number finding make it the better choice for software that relies on high clock speeds and low core counts. The Cinebench results, while narrow, also favor AMD across the board, which suggests the Zen 5 architecture is more efficient per clock in rendering tasks despite having half the cores.

The Intel Xeon w7-3565X wins in memory bandwidth and parallel compute. Its 42.7% lead in floating point math and 23.6% lead in extended instructions show strength in scientific and vectorized workloads. The 21.6% lead in data compression and 15.8% lead in encryption point to advantages in database, storage, and security applications. The 2.5% multithread win, though small, indicates that the Intel chip scales better with its 64 threads in some mixed workloads.

Use-case split is clean: choose AMD for low-latency, high-frequency tasks like real-time physics, encryption key generation, or single-threaded application servers. Choose Intel for high-throughput, bandwidth-bound tasks like large-scale data processing, floating point simulation, or multi-GPU rendering farms. The EPYC 4585PX also fits into compact AM5 systems, while the Xeon w7-3565X demands a workstation platform with eight-channel memory.

Specification Differences

| Specification | Intel Xeon w7-3565X | AMD EPYC 4585PX |

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

| Cores | 32 | 16 |

| Threads | 64 | 32 |

| Base Clock | 2.50 GHz | 4.30 GHz |

| Boost Clock | 4.80 GHz | 5.70 GHz |

| TDP | 335 W | 170 W |

| Socket | Intel Socket 4677 | AMD Socket AM5 |

| Codename | Sapphire Rapids | Grado (Zen 5) |

| Process Node | 10 nm | 4 nm |

| Foundry | Intel | TSMC |

| Die Size | 4x 477 mm² | 2x 70.6 mm² |

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

| L3 Cache | 82.5 MB | 128 MB |

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

| Memory Bandwidth | 307.2 GB/s | 89.6 GB/s |

| PCIe | Gen 5, 112 Lanes | Gen 5, 24 Lanes |

| Integrated Graphics | N/A | Radeon Graphics |

| Release Date | 2024-08-23 | 2025-05-12 |

| Launch MSRP | $2689 | $699 |

| Multiplier Unlocked | Yes | No |

Both chips support DDR5 memory and ECC, and both are active production parts in the server/workstation segment. The Intel part has a 65 W higher TDP differential beyond the raw number, but the AMD part's 170 W TDP still requires robust cooling. The Intel chip has a larger L1 cache per core (80 KB) matching AMD, but AMD's L3 is 45.5 MB larger. The transistor count of 16,630 million is listed only for AMD, highlighting the density of the 4 nm process.

FAQ

Q: Which CPU has higher single-thread performance?

A: The AMD EPYC 4585PX leads in PassMark single-thread with a score of 4538 versus Intel's 3407, a 24.9% advantage. It also wins every Cinebench single-core test by 0.7%.

Q: How do the two compare in multi-threaded rendering?

A: The AMD EPYC 4585PX wins all three Cinebench multi-core tests, but only by 0.7%: R15 (6093 vs 6052), R20 (25389 vs 25218), and R23 (60451 vs 60045). The Intel Xeon w7-3565X wins PassMark multithread by 2.5% (70642 vs 68908).

Q: Which CPU has more memory bandwidth?

A: The Intel Xeon w7-3565X supports eight-channel DDR5 with 307.2 GB/s, while the AMD EPYC 4585PX uses dual-channel DDR5 at 89.6 GB/s. This gives Intel a 3.4x bandwidth advantage.

Q: What is the core and thread difference?

A: The Intel Xeon w7-3565X has 32 cores and 64 threads, while the AMD EPYC 4585PX has 16 cores and 32 threads. Intel doubles the core count, but AMD compensates with higher clocks.

Q: Which CPU includes integrated graphics?

A: Only the AMD EPYC 4585PX has integrated Radeon Graphics. The Intel Xeon w7-3565X has no integrated graphics and requires a discrete GPU for display output.

Q: What are the release dates?

A: The Intel Xeon w7-3565X was released on 2024-08-23, and the AMD EPYC 4585PX was released on 2025-05-12. The AMD part is newer by roughly nine months.

The Verdict

The data supports a clear verdict for each audience. The AMD EPYC 4585PX is the better choice for single-threaded and latency-sensitive workloads, given its 24.9% lead in single-thread PassMark, 35.7% lead in physics, and 27.2% lead in prime number finding. It also wins all Cinebench tests, albeit marginally, and offers a much lower 170 W TDP, which makes it easier to cool and integrate into smaller systems on the AM5 socket.

The Intel Xeon w7-3565X is the better choice for bandwidth-hungry, parallel, and floating point-heavy applications. Its 42.7% lead in floating point math, 23.6% lead in extended instructions, 21.6% lead in data compression, and 15.8% lead in encryption make it indispensable for data centers, scientific computing, and high-performance storage. The eight-channel memory interface and 112 PCIe lanes provide the infrastructure for large-scale expansion.

For users who need a general-purpose server CPU with strong single-thread performance and low power draw, the AMD EPYC 4585PX is the data-backed winner. For users who prioritize maximum memory bandwidth, floating point throughput, and I/O expansion, the Intel Xeon w7-3565X is the clear choice. The near-tie in Cinebench multi-core scores means rendering workloads will not differentiate the two, but the PassMark suite reveals where each excels. The AMD part wins 10 benchmarks, Intel wins 7, but Intel's wins are often by double-digit margins, making the average benchmark score favor Intel by 19.1%.