AMD EPYC 4584PX vs AMD Ryzen AI Max+ 392 Comparison

Head-to-Head Benchmarks

The recorded data shows a decisive overall victory for the AMD EPYC 4584PX, winning 9 of the 11 comparable benchmark workloads, while the AMD Ryzen AI Max+ 392 takes only 2. The EPYC’s largest margins come in data encryption, where it leads by 39.5% (45902 versus 27784), and physics, where it is ahead by 36.9% (4574 versus 2887). These are substantial deltas, indicating a strong advantage in workloads that stress cryptographic throughput and simulation physics.

The next tier of EPYC wins sits in the 25 to 33 percent band. Random string sorting shows a 32.2% delta (87690 versus 59487), data compression trails at 25.2% (741648 versus 554760), and integer math is 24.5% ahead (201919 versus 152414). Prime number finding and floating-point math are also clear EPYC victories, with deltas of 27.4% (441 versus 320) and 18% (121460 versus 99548) respectively. The multithread score, a broad indicator of sustained parallel throughput, favors the EPYC by 22.2% (58117 versus 45231), and extended instructions are 15.1% ahead (53774 versus 45666).

The Ryzen AI Max+ 392 secures its only wins in the single-threaded domain. Its passmark_single_thread score of 3927 beats the EPYC’s 3795, a 3.5% advantage. The same 3.5% delta appears in the duplicate singlethread entry. This is a narrow margin, but it is consistent across both listings, suggesting the Ryzen’s Zen 5 architecture holds a slight per-core frequency advantage in lightly threaded tasks.

Looking at the broader database context, the Ryzen’s average benchmark score of 90541 places it 0.2% behind the Intel Xeon 654 (90717) and 0.7% behind the AMD Ryzen 9 9955HX (91199). It sits 2.7% ahead of the Intel Xeon w7-2575X (88172) and 3% ahead of the Intel Xeon 6736P (87864). The EPYC’s average of 83090 is nearly identical to the AMD EPYC 9135 (82980, a 0.1% gap), 0.9% behind the Intel Core Ultra 9 285K (83807), 1.1% behind the Intel Core Ultra 9 290K Plus (84003), and 1.8% ahead of the AMD EPYC 7443P (81661). Both CPUs sit at the 96th percentile against all CPUs in the database, so each is a top-tier performer in its respective segment.

Architecture Differences

The two processors come from different design generations and target different market segments. The Ryzen AI Max+ 392 is a mobile part built on Zen 5 architecture, codenamed Strix Halo, fabricated on a 4 nm TSMC process. The EPYC 4584PX is a server/workstation chip using Zen 4 architecture, codename Raphael, on a 5 nm TSMC process. The EPYC carries a transistor count of 17,840 million, while the Ryzen’s transistor figure is not recorded. Die sizes are similar in area: the Ryzen uses 2x 70.6 mm², and the EPYC uses 2x 71 mm².

Core counts differ significantly. The EPYC provides 16 cores and 32 threads, while the Ryzen offers 12 cores and 24 threads. Clock speeds favor the EPYC in both base and boost: 4.20 GHz base and 5.70 GHz boost versus 3.20 GHz and 5.00 GHz for the Ryzen. The EPYC’s TDP of 120 watts is more than double the Ryzen’s 55 watts, reflecting the server platform’s higher sustained power envelope.

Cache hierarchies are notably different. The Ryzen allocates 80 KB of L1 per core and 1 MB of L2 per core, with 64 MB of shared L3. The EPYC uses 64 KB of L1 per core and 1 MB of L2 per core, but doubles the shared L3 to 128 MB. Additionally, the EPYC includes a 3D V-Cache slice of 64 MB, which is not present on the Ryzen. This extra cache capacity is a primary driver for the EPYC’s lead in memory-sensitive workloads like data compression and random string sorting.

Memory support also diverges. The Ryzen uses LPDDR5X with a quad-channel bus and a recorded bandwidth of 256.0 GB/s. The EPYC uses DDR5 with a dual-channel bus and 83.2 GB/s bandwidth. Despite the Ryzen’s much higher theoretical memory bandwidth, the EPYC’s larger cache and higher core count win out in the recorded benchmarks. Both support ECC memory, which is a key feature for server deployments.

PCIe connectivity differs as well. The Ryzen offers Gen 4 with 16 lanes (CPU only), while the EPYC provides Gen 5 with 28 lanes (CPU only). This gives the EPYC a substantial expansion advantage for server peripherals and accelerators. Integrated graphics are present on both: the Ryzen features a Radeon 8060S, while the EPYC includes a more generic Radeon Graphics solution. Sockets are incompatible: the Ryzen uses AMD Socket FP11, and the EPYC uses AMD Socket AM5.

The Ryzen was released on January 5, 2026, while the EPYC launched on May 20, 2024. The EPYC has a recorded launch MSRP of $699; the Ryzen has no listed launch price. Both are marked as active production parts, and neither has an unlocked multiplier.

FAQ

Q: Which processor wins the single-threaded benchmark?

A: The AMD Ryzen AI Max+ 392 wins passmark_single_thread with a score of 3927, a 3.5% advantage over the EPYC 4584PX’s 3795.

Q: How large is the EPYC’s lead in multithreaded performance?

A: The EPYC scores 58117 in passmark_multithread versus the Ryzen’s 45231, a 22.2% advantage.

Q: Does the Ryzen’s higher memory bandwidth translate to benchmark wins?

A: No. The Ryzen’s 256.0 GB/s LPDDR5X bandwidth is triple the EPYC’s 83.2 GB/s DDR5, but the EPYC still wins all memory-sensitive workloads, including data compression (25.2% ahead) and random string sorting (32.2% ahead).

Q: What is the difference in L3 cache capacity?

A: The EPYC has 128 MB of shared L3 plus a 64 MB 3D V-Cache slice, while the Ryzen has 64 MB of shared L3. The EPYC effectively has three times the total L3 capacity.

Q: Are both processors in the same performance percentile?

A: Yes, both are at the 96th percentile against all CPUs in the database, though their average scores differ: 90541 for the Ryzen and 83090 for the EPYC.

Q: Which processor has more PCIe lanes?

A: The EPYC provides Gen 5 with 28 lanes (CPU only), while the Ryzen offers Gen 4 with 16 lanes (CPU only).

The Verdict

The data points to a clear segmentation. The AMD EPYC 4584PX is the superior choice for any workload that scales with core count, cache capacity, or sustained parallel execution. Its 16 cores and 32 threads, combined with 128 MB of shared L3 and a 64 MB 3D V-Cache slice, deliver consistent wins across every multithreaded category in the head-to-head comparison. The 22.2% multithread lead, the 39.5% encryption lead, and the 36.9% physics lead make it the obvious pick for server compute, data processing, and simulation tasks.

The AMD Ryzen AI Max+ 392, despite having fewer cores and a lower TDP, holds a narrow but real single-thread advantage. Its 3.5% lead in passmark_single_thread suggests that lightly threaded applications, such as legacy database queries or certain interactive workloads, will see slightly better responsiveness. However, this is the only domain where it beats the EPYC. The Ryzen’s higher memory bandwidth (256.0 GB/s versus 83.2 GB/s) does not compensate for the EPYC’s larger cache and higher core count in the recorded tests.

For a mobile platform, the Ryzen’s 55 watt TDP and FP11 socket make it a fitting choice for compact systems where power efficiency matters, but the benchmark data shows it is outclassed in nearly every compute-intensive metric. For a server or workstation, the EPYC’s 120 watt TDP, AM5 socket, and Gen 5 PCIe lanes provide a platform that maximizes throughput. The EPYC also has a longer availability window, having launched in May 2024 versus the Ryzen’s January 2026 release.

The verdict is straightforward: the EPYC 4584PX is the performance leader in all but single-threaded tasks, and even there the margin is modest. The Ryzen AI Max+ 392 is the better choice only if the workload is dominated by single-threaded code and the platform must be mobile. Otherwise, the EPYC’s benchmark record is decisive.

Specification Differences

| Field | AMD Ryzen AI Max+ 392 | AMD EPYC 4584PX |

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

| Cores | 12 | 16 |

| Threads | 24 | 32 |

| Base Clock | 3.20 GHz | 4.20 GHz |

| Boost Clock | 5.00 GHz | 5.70 GHz |

| TDP | 55 W | 120 W |

| Socket | AMD Socket FP11 | AMD Socket AM5 |

| Architecture | Zen 5 | Zen 4 |

| Codename | Strix Halo | Raphael |

| Generation | Ryzen AI Max (Zen 5 (Strix Halo)) | EPYC (Zen 4 (Raphael)) |

| Process Node | 4 nm | 5 nm |

| Transistors | Not recorded | 17,840 million |

| Die Size | 2x 70.6 mm² | 2x 71 mm² |

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

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

| L3 Cache | 64 MB (shared) | 128 MB (shared) |

| 3D V-Cache | None | 1x 64MB Slice |

| Memory Support | LPDDR5X | DDR5 |

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

| Memory Bandwidth | 256.0 GB/s | 83.2 GB/s |

| PCIe | Gen 4, 16 Lanes (CPU only) | Gen 5, 28 Lanes (CPU only) |

| Integrated Graphics | Radeon 8060S | Radeon Graphics |

| Market Segment | Mobile | Server/Workstation |

| Release Date | 2026-01-05 | 2024-05-20 |

| Launch MSRP | None recorded | $699 |

| Part Number | 100-000001979 | 100-000001481 |