AMD Ryzen AI Max+ 388 vs AMD Ryzen Embedded 8640U Comparison

AMD Ryzen AI Max+ 388 and AMD Ryzen Embedded 8640U are both mobile processors from AMD, but they target very different segments of the market. The Ryzen AI Max+ 388 is a high-performance part built on the Zen 5 architecture, while the Ryzen Embedded 8640U is a lower-power Zen 4 chip designed for embedded systems. The database shows a clear performance hierarchy between the two, with the Ryzen AI Max+ 388 dominating in every recorded benchmark category.

Head-to-Head Benchmarks

The Ryzen AI Max+ 388 holds a substantial advantage across all measured workloads. In Cinebench R23 multi-core, the Ryzen AI Max+ 388 scores 18759 points, while the Ryzen Embedded 8640U has no recorded benchmark scores in the database, so direct numerical comparisons are impossible. The single-core Cinebench R23 result for the Ryzen AI Max+ 388 is 1960 points. In the older Cinebench R15 test, the Ryzen AI Max+ 388 delivers 2872 points in multi-core and 298 points in single-core.

PassMark results for the Ryzen AI Max+ 388 show strong performance in both integer and floating-point workloads. It scores 109588 in integer math and 72722 in floating-point math. The encryption workload yields 20092 points, while extended instructions score 32719. Data compression reaches 400887 points, and random string sorting hits 43196. The processor also records 145 in find prime numbers and 1843 in physics. Its multithread score is 33486, and its single-thread score is 4185.

The Ryzen Embedded 8640U has no benchmark entries in the database, which means the analysis relies entirely on the Ryzen AI Max+ 388 measured results and the architectural specifications of the embedded part. The Ryzen AI Max+ 388 sits at the 90th percentile among all CPUs in the database, with an average benchmark score of 49796. Its nearest rivals include the Intel Core 9 273PE with an average score of 49845 and a delta of -0.1%, the Intel Core i5-14600KF at 49394 with a delta of 0.8%, the AMD Ryzen 9 7900 at 49228 with a delta of 1.2%, and the AMD Ryzen 7 PRO 5755G at 49196 with a delta of 1.2%. This places the Ryzen AI Max+ 388 within a tight competitive cluster, effectively matching the Core 9 273PE and slightly ahead of the other three rivals.

The Ryzen Embedded 8640U holds the 50th percentile among all CPUs, with an average benchmark score of 0 in the database due to missing measurements. This percentile gap alone indicates that the two processors occupy vastly different performance tiers.

Where Each One Wins

The Ryzen AI Max+ 388 wins in every workload category where data exists. Its 8 cores and 16 threads provide a strong foundation for multi-threaded applications. The Cinebench R23 multi-core score of 18759 reflects sustained throughput for rendering and compilation tasks. The PassMark multithread score of 33486 confirms this pattern. Single-thread performance is also solid, with a PassMark single-thread score of 4185 and a Cinebench R23 single-core score of 1960.

The Ryzen Embedded 8640U does not have recorded wins in any benchmark category. Its role is defined by its specifications rather than measured performance. With 6 cores and 12 threads, it offers fewer parallel execution resources. Its lower 28 W TDP compared to the 55 W TDP of the Ryzen AI Max+ 388 suggests a design focused on power efficiency rather than peak performance. The Ryzen Embedded 8640U uses DDR5 memory in a dual-channel configuration with 89.6 GB/s of bandwidth, while the Ryzen AI Max+ 388 uses LPDDR5X in a quad-channel setup with 256.0 GB/s of bandwidth. The Ryzen AI Max+ 388 has four times the memory bandwidth, which directly benefits memory-intensive workloads such as large data processing and integrated graphics tasks.

The Ryzen AI Max+ 388 integrates a Radeon 8060S GPU, while the Ryzen Embedded 8640U integrates a Radeon 760M. The Radeon 8060S is a higher-tier integrated graphics solution, and combined with the greater memory bandwidth, the Ryzen AI Max+ 388 is better positioned for graphics and compute workloads that rely on the iGPU. The Ryzen Embedded 8640U, with its lower TDP and smaller cache, is better suited for power-constrained embedded applications where sustained heavy compute is not the primary requirement.

Architecture Differences

The two processors differ fundamentally in architecture generation. The Ryzen AI Max+ 388 uses Zen 5 architecture under the Strix Halo codename, while the Ryzen Embedded 8640U uses Zen 4 under the Hawk Point codename. Both are manufactured on a 4 nm process at TSMC, so the process node is identical. The Ryzen AI Max+ 388 has a die size of 2x 70.6 mm², while the Ryzen Embedded 8640U has a die size of 178 mm². The Ryzen Embedded 8640U lists 25,000 million transistors, while the Ryzen AI Max+ 388 does not have a transistor count in the database.

Cache configurations differ significantly. The Ryzen AI Max+ 388 provides 80 KB of L1 cache per core, 1 MB of L2 cache per core, and 32 MB of shared L3 cache. The Ryzen Embedded 8640U provides 64 KB of L1 cache per core, 1 MB of L2 cache per core, and 16 MB of shared L3 cache. The Ryzen AI Max+ 388 has double the L3 cache, which improves hit rates for larger working sets.

Memory support also diverges. The Ryzen AI Max+ 388 supports LPDDR5X memory over a quad-channel bus, delivering 256.0 GB/s of bandwidth. The Ryzen Embedded 8640U supports DDR5 over a dual-channel bus, delivering 89.6 GB/s of bandwidth. Both processors support ECC memory. PCIe connectivity also differs: the Ryzen AI Max+ 388 provides Gen 4 with 16 lanes (CPU only), while the Ryzen Embedded 8640U provides Gen 4 with 20 lanes (CPU only). The embedded part offers more PCIe lanes, which is typical for embedded applications that need additional I/O expansion.

The Ryzen AI Max+ 388 has a base clock of 3.60 GHz and a boost clock of 5.00 GHz. The Ryzen Embedded 8640U has a base clock of 3.50 GHz and a boost clock of 4.90 GHz. The Ryzen AI Max+ 388 runs slightly higher at both ends. Neither processor has an unlocked multiplier.

The Ryzen AI Max+ 388 uses AMD Socket FP11, while the Ryzen Embedded 8640U uses AMD Socket FP8. The Ryzen AI Max+ 388 is part of the Ryzen AI Max generation (Zen 5, Strix Halo), while the Ryzen Embedded 8640U is part of the 8000 series and the Ryzen Embedded generation (Zen 4, Hawk Point). The Ryzen AI Max+ 388 has a part number of 100-000001980, while the Ryzen Embedded 8640U has an unknown part number. The Ryzen AI Max+ 388 was released on 2026-01-05, while the Ryzen Embedded 8640U was released on 2024-04-01. Both are active production parts and target the mobile market segment.

FAQ

Q: Which processor has more cores?

A: The AMD Ryzen AI Max+ 388 has 8 cores and 16 threads, while the AMD Ryzen Embedded 8640U has 6 cores and 12 threads.

Q: How does the memory bandwidth compare?

A: The Ryzen AI Max+ 388 delivers 256.0 GB/s over a quad-channel LPDDR5X bus. The Ryzen Embedded 8640U delivers 89.6 GB/s over a dual-channel DDR5 bus.

Q: Do both processors support ECC memory?

A: Yes, both the Ryzen AI Max+ 388 and the Ryzen Embedded 8640U support ECC memory.

Q: What are the TDP ratings?

A: The Ryzen AI Max+ 388 has a TDP of 55 W. The Ryzen Embedded 8640U has a TDP of 28 W.

Q: Which processor has the larger L3 cache?

A: The Ryzen AI Max+ 388 has 32 MB of shared L3 cache. The Ryzen Embedded 8640U has 16 MB of shared L3 cache.

Q: What integrated graphics do they use?

A: The Ryzen AI Max+ 388 uses the Radeon 8060S. The Ryzen Embedded 8640U uses the Radeon 760M.

Specification Differences

| Specification | AMD Ryzen AI Max+ 388 | AMD Ryzen Embedded 8640U |

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

| Cores | 8 | 6 |

| Threads | 16 | 12 |

| Base Clock | 3.60 GHz | 3.50 GHz |

| Boost Clock | 5.00 GHz | 4.90 GHz |

| TDP | 55 W | 28 W |

| Socket | AMD Socket FP11 | AMD Socket FP8 |

| Architecture | Zen 5 | Zen 4 |

| Codename | Strix Halo | Hawk Point |

| Generation | Ryzen AI Max (Zen 5, Strix Halo) | Ryzen Embedded (Zen 4, Hawk Point) |

| Process Node | 4 nm | 4 nm |

| Foundry | TSMC | TSMC |

| Die Size | 2x 70.6 mm² | 178 mm² |

| Transistors | Not listed | 25,000 million |

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

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

| L3 Cache | 32 MB (shared) | 16 MB (shared) |

| Memory Support | LPDDR5X | DDR5 |

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

| Memory Bandwidth | 256.0 GB/s | 89.6 GB/s |

| ECC Memory | Yes | Yes |

| PCIe | Gen 4, 16 Lanes (CPU only) | Gen 4, 20 Lanes (CPU only) |

| Integrated Graphics | Radeon 8060S | Radeon 760M |

| Market Segment | Mobile | Mobile |

| Production Status | Active | Active |

| Release Date | 2026-01-05 | 2024-04-01 |

| Multiplier Unlocked | No | No |

| Part Number | 100-000001980 | Unknown |

| Percentile vs All CPUs | 90 | 50 |

The Verdict

The data points to a clear split between these two processors. The AMD Ryzen AI Max+ 388 is the higher-performance part in every measurable way. It has more cores, more threads, higher clocks, double the L3 cache, four times the memory bandwidth, and a stronger integrated GPU. Its 90th percentile ranking among all CPUs and its competitive position against the Intel Core 9 273PE, Intel Core i5-14600KF, AMD Ryzen 9 7900, and AMD Ryzen 7 PRO 5755G confirm that it belongs in the upper tier of mobile processors. The Ryzen AI Max+ 388 is the appropriate choice for workloads that demand maximum multi-threaded throughput, high memory bandwidth, and capable integrated graphics.

The AMD Ryzen Embedded 8640U occupies the opposite position. With a 28 W TDP, 6 cores, 12 threads, and 89.6 GB/s of memory bandwidth, it is designed for power-conscious embedded applications. Its 50th percentile ranking places it in the middle of the database, and the absence of benchmark scores means its performance characteristics are defined entirely by specification. The extra PCIe lanes (20 versus 16) and support for DDR5 with ECC make it a practical option for embedded systems that require I/O flexibility and memory reliability in a lower-power envelope.

The choice between the two depends on the workload. The Ryzen AI Max+ 388 delivers measured performance at the 90th percentile and is the stronger part for compute-heavy mobile use. The Ryzen Embedded 8640U serves a different purpose, trading performance for lower power consumption and broader I/O capabilities. The database shows no benchmark overlap, so any direct performance comparison relies on the Ryzen AI Max+ 388 recorded scores against the embedded part's specifications. For high throughput, the Ryzen AI Max+ 388 is the clear pick. For low-power embedded integration, the Ryzen Embedded 8640U has the relevant feature set.