AMD EPYC 7413 vs AMD Ryzen AI Max+ 395 Comparison

The AMD EPYC 7413 and AMD Ryzen AI Max+ 395 are both 95th-percentile processors, but they are built for entirely different jobs. The EPYC 7413 is a 24-core Zen 3 server chip with massive memory bandwidth and I/O, while the Ryzen AI Max+ 395 is a 16-core Zen 5 mobile chip with a high boost clock and integrated graphics. The data shows a clear split: the EPYC 7413 wins the heavy multi-threaded and legacy single-core workloads, while the Ryzen AI Max+ 395 takes the modern single-thread and floating-point tests. Neither chip is a universal winner; your choice depends entirely on whether you need raw server throughput or a compact, power-efficient package with strong per-core performance.

The Verdict

Choose the AMD EPYC 7413 if your workloads are server-oriented and scale with core count and cache. It wins 9 of the 15 head-to-head benchmarks, including the critical Cinebench R23 multi-core test by 21.9% (43044 vs 35314). The EPYC also dominates in data encryption (36.8% ahead), physics (35.2% ahead), and prime number finding (31% ahead), making it the superior choice for virtualization, database work, and scientific computing that uses legacy instruction paths. Its 95th-percentile ranking is backed by an average benchmark score of 80041, which is 2.9% higher than the Ryzen AI Max+ 395's 77740.

Choose the AMD Ryzen AI Max+ 395 if you need a mobile processor with exceptional per-core speed and modern instruction efficiency. It wins the Passmark single-thread test by 42.1% (4147 vs 2400) and the Cinebench R15 multi-core test by 20.6% (5463 vs 4338), despite having 8 fewer cores. The Ryzen AI Max+ 395 also wins in extended instructions (18.9% ahead) and floating-point math (7.6% ahead), indicating better support for AVX-512-style workloads and modern encryption algorithms. Its integrated Radeon 8060S graphics means no discrete GPU is required for basic display output, a feature the EPYC completely lacks.

The data is unambiguous about the trade-off. The EPYC 7413 is the heavy lifter for sustained, multi-threaded server tasks. The Ryzen AI Max+ 395 is the nimble generalist for mobile workstations, content creation, and any task that rewards high clock speeds. If you are building a rack server, buy the EPYC. If you are buying a high-end laptop or compact workstation, the Ryzen AI Max+ 395 is the only one of the two that fits the socket.

Architecture Differences

The two chips come from different eras and design philosophies. The EPYC 7413 uses the Zen 3 architecture on a 7 nm TSMC process, with a codename of Milan. It has 24 cores and 48 threads, a base clock of 2.65 GHz, and a boost clock of 3.60 GHz. The Ryzen AI Max+ 395 uses the newer Zen 5 architecture on a 4 nm TSMC process, codenamed Strix Halo. It packs 16 cores and 32 threads but runs at a much higher 3.00 GHz base and 5.10 GHz boost clock.

Cache hierarchies differ significantly. The EPYC 7413 has 64 KB L1 per core, 512 KB L2 per core, and a massive 128 MB shared L3. The Ryzen AI Max+ 395 has a larger 80 KB L1 per core and 1 MB L2 per core, but only 64 MB of shared L3. The EPYC's larger L3 is a direct advantage for workloads with large working sets, while the Ryzen's larger per-core L2 favors bursty, single-threaded tasks.

Memory and I/O are where the EPYC pulls far ahead. The EPYC 7413 supports DDR4 over an eight-channel bus, delivering 204.8 GB/s of bandwidth and 128 PCIe Gen 4 lanes. The Ryzen AI Max+ 395 uses LPDDR5X over a quad-channel bus, achieving 256.0 GB/s (higher raw bandwidth) but only 16 PCIe Gen 4 lanes. Both support ECC memory. The EPYC is a server/workstation part on Socket SP3; the Ryzen is a mobile part on Socket FP11.

The Ryzen AI Max+ 395 includes integrated Radeon 8060S graphics, which the EPYC 7413 lacks entirely. The EPYC has a launch MSRP of $1825; the Ryzen has no launch MSRP listed. Transistor counts differ, with the EPYC at 16,600 million across 4x 81 mm² dies, while the Ryzen uses 2x 70.6 mm² dies (transistor count not listed). The EPYC's TDP is 180 W versus the Ryzen's 55 W — a 3.3x power difference that reflects their respective server and mobile roles.

FAQ

Q: Which CPU has better single-thread performance?

A: The Ryzen AI Max+ 395 wins Passmark single-thread by 42.1% (4147 vs 2400) and has a 5.10 GHz boost clock versus 3.60 GHz. However, in Cinebench R23 single-core, the EPYC 7413 wins by 197.3% (6076 vs 2044), a discrepancy that suggests the Ryzen's Cinebench single-core result is anomalously low.

Q: Which CPU is better for multi-threaded rendering?

A: The EPYC 7413 wins Cinebench R23 multi-core by 21.9% (43044 vs 35314), but the Ryzen AI Max+ 395 wins Cinebench R15 multi-core by 20.6% (5463 vs 4338). The EPYC's 24 cores and 128 MB L3 give it the edge in sustained modern multi-thread loads.

Q: Does the Ryzen AI Max+ 395 have integrated graphics?

A: Yes, it includes Radeon 8060S integrated graphics. The EPYC 7413 has no integrated graphics at all, requiring a discrete GPU for any display output.

Q: Which CPU supports more memory bandwidth?

A: The Ryzen AI Max+ 395 has a higher theoretical bandwidth at 256.0 GB/s (LPDDR5X, quad-channel) versus the EPYC's 204.8 GB/s (DDR4, eight-channel). However, the EPYC's eight-channel design supports more total memory capacity and is suited for server-grade workloads.

Q: Which CPU has more PCIe lanes for expansion?

A: The EPYC 7413 has 128 PCIe Gen 4 lanes, while the Ryzen AI Max+ 395 has only 16 PCIe Gen 4 lanes. This makes the EPYC the only choice for multi-GPU servers or heavy NVMe storage arrays.

Q: Are both CPUs in the same performance percentile?

A: Yes, both are in the 95th percentile of all CPUs. The EPYC's average benchmark score is 80041, which is 2.9% higher than the Ryzen's 77740.

Specification Differences

| Specification | AMD EPYC 7413 | AMD Ryzen AI Max+ 395 |

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

| Cores | 24 | 16 |

| Threads | 48 | 32 |

| Base Clock | 2.65 GHz | 3.00 GHz |

| Boost Clock | 3.60 GHz | 5.10 GHz |

| TDP | 180 W | 55 W |

| Socket | AMD Socket SP3 | AMD Socket FP11 |

| Architecture | Zen 3 | Zen 5 |

| Codename | Milan | Strix Halo |

| Process Node | 7 nm | 4 nm |

| Die Size | 4x 81 mm² | 2x 70.6 mm² |

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

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

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

| Memory Support | DDR4 | LPDDR5X |

| Memory Bus | Eight-channel | Quad-channel |

| Memory Bandwidth | 204.8 GB/s | 256.0 GB/s |

| PCIe | Gen 4, 128 Lanes | Gen 4, 16 Lanes |

| Integrated Graphics | None | Radeon 8060S |

| Market Segment | Server/Workstation | Mobile |

| Release Date | 2021-03-14 | 2025-01-05 |

Head-to-Head Benchmarks

The EPYC 7413 dominates legacy and cache-sensitive workloads. In Cinebench R23 single-core, the EPYC wins by a massive 197.3% (6076 vs 2044), a gap that dwarfs any other benchmark difference. It also wins Cinebench R15 single-core by 93.7% (612 vs 316), suggesting the Ryzen's single-core results are inconsistent across Cinebench versions. In Passmark data encryption, the EPYC is 36.8% ahead (48492 vs 35455), a critical metric for secure server operations. Physics simulation also favors the EPYC by 35.2% (4708 vs 3481), and prime number finding by 31% (397 vs 303). The EPYC takes integer math by 7.5% (215629 vs 200665), data compression by 3.6% (715616 vs 690650), and random string sorting by 6.5% (81134 vs 76177).

The Ryzen AI Max+ 395 strikes back in modern, high-clock workloads. It wins Passmark single-thread by 42.1% (4147 vs 2400), a result consistent with its 5.10 GHz boost clock. Extended instructions favor the Ryzen by 18.9% (56346 vs 45696), indicating better SIMD throughput. Floating-point math goes to the Ryzen by 7.6% (128682 vs 118881). The Ryzen also wins Passmark multithread by 7.8% (54934 vs 50641), despite having 8 fewer cores — a signal of its Zen 5 efficiency. Most notably, the Ryzen wins Cinebench R15 multi-core by 20.6% (5463 vs 4338), but loses Cinebench R23 multi-core by 21.9% (43044 vs 35314). This inversion suggests the Ryzen's performance degrades on longer, more complex renders, or that the EPYC's 128 MB L3 cache becomes decisive in the R23 workload.

Where Each One Wins

The AMD EPYC 7413 wins in server-class scenarios: data encryption (36.8% ahead), physics simulation (35.2% ahead), prime number computation (31% ahead), and integer math (7.5% ahead). Its 24 cores and 128 MB L3 make it ideal for virtualized environments, database transaction processing, and scientific simulations that rely on legacy x86 instruction paths. The Cinebench R23 multi-core win (21.9% ahead) confirms it is the better choice for long-duration, heavily threaded renders. Its 128 PCIe lanes mean it can support multiple GPUs and NVMe drives simultaneously, a capability the Ryzen cannot match. The EPYC is also the only option for building an eight-channel DDR4 memory system with ECC, though the Ryzen also supports ECC.

The AMD Ryzen AI Max+ 395 wins in mobile and single-thread-focused workloads. Its Passmark single-thread win (42.1% ahead) and floating-point math win (7.6% ahead) make it better for interactive applications, spreadsheet calculations, and light content creation. The extended instructions win (18.9% ahead) shows it handles modern SIMD code more efficiently, benefiting video encoding and cryptography that uses newer instruction sets. The Passmark multithread win (7.8% ahead) is remarkable given the core deficit, indicating that power-efficient Zen 5 cores can outperform older Zen 3 cores in mixed workloads. The integrated Radeon 8060S graphics eliminate the need for a discrete GPU, and its 55 W TDP makes it suitable for thin-and-light systems. The higher memory bandwidth (256.0 GB/s) also gives it an edge in memory-bandwidth-bound tasks, despite fewer channels.

The data does not support a single "best" chip. The EPYC 7413 is the correct choice for rack-mounted servers, high-core-count workstations, and any workload that can use 128 PCIe lanes or 128 MB of L3. The Ryzen AI Max+ 395 is the correct choice for a high-performance laptop, a compact workstation, or any system where power draw, integrated graphics, and per-core speed matter more than raw core count and expansion capability.