AMD Ryzen AI Max+ 392 vs AMD Ryzen Embedded 8840U Comparison

FAQ

Q: What are the core and thread counts for each processor?

A: The AMD Ryzen AI Max+ 392 has 12 cores and 24 threads. The AMD Ryzen Embedded 8840U has 8 cores and 16 threads.

Q: What is the difference in their L3 cache sizes?

A: The Ryzen AI Max+ 392 has 64 MB of shared L3 cache. The Ryzen Embedded 8840U has 16 MB of shared L3 cache.

Q: How do their memory bandwidth specifications compare?

A: The Ryzen AI Max+ 392 uses a quad-channel LPDDR5X memory bus with a bandwidth of 256.0 GB/s. The Ryzen Embedded 8840U uses a dual-channel DDR5 memory bus with a bandwidth of 89.6 GB/s.

Q: What is the TDP of each processor?

A: The Ryzen AI Max+ 392 has a TDP of 55 watts. The Ryzen Embedded 8840U has a TDP of 28 watts.

Q: Which processor has a higher boost clock?

A: The Ryzen Embedded 8840U has a boost clock of 5.10 GHz, which is slightly higher than the 5.00 GHz boost clock of the Ryzen AI Max+ 392.

Q: What are the integrated graphics solutions for each chip?

A: The Ryzen AI Max+ 392 uses the Radeon 8060S. The Ryzen Embedded 8840U uses the Radeon 780M.

Where Each One Wins

The recorded data separates these two processors into distinct use cases. The Ryzen AI Max+ 392 is built for heavy parallel workloads. Its benchmark results show a massive lead in multi-threaded tasks. The PassMark multithread score of 45231 positions it far ahead of typical mobile processors. The Ryzen Embedded 8840U, with its lower TDP and smaller core count, is suited for embedded applications where power efficiency is prioritized over raw throughput.

The Ryzen AI Max+ 392 dominates in memory-intensive operations. The quad-channel LPDDR5X interface with 256.0 GB/s bandwidth is nearly three times the bandwidth of the Embedded 8840U. This makes the larger chip better suited for data compression, encryption, and large-scale floating-point math. The Embedded 8840U, with its dual-channel DDR5 at 89.6 GB/s, would be adequate for lighter embedded tasks that do not require sustained memory throughput.

The Ryzen Embedded 8840U wins on thermal envelope and integration flexibility. Its 28 W TDP is less than half of the 55 W TDP of the AI Max+ 392. It also provides more PCIe lanes: 20 lanes versus 16 lanes. This makes it a practical choice for systems with many peripheral devices but modest compute demands. The AI Max+ 392, with its 12 cores and 24 threads, wins on raw processing capability for mobile workstations and high-end laptops.

Architecture Differences

The two chips come from different Zen generations. The Ryzen AI Max+ 392 uses Zen 5 architecture under the Strix Halo codename. The Ryzen Embedded 8840U uses Zen 4 architecture under the Hawk Point codename. Both are built on a 4 nm process node by TSMC, but their physical designs differ significantly. The AI Max+ 392 has a die size of 2x 70.6 mm², while the Embedded 8840U has a single 178 mm² die. The Embedded 8840U lists 25,000 million transistors, while the AI Max+ 392 does not have a recorded transistor count.

Cache structures differ substantially. The AI Max+ 392 has 80 KB of L1 cache per core, 1 MB of L2 cache per core, and 64 MB of shared L3 cache. The Embedded 8840U has 64 KB of L1 cache per core, 1 MB of L2 cache per core, and 16 MB of shared L3 cache. The larger L3 cache on the AI Max+ 392 provides a significant advantage for workloads that repeatedly access a large working set.

Memory architecture also separates the two. The AI Max+ 392 supports LPDDR5X with a quad-channel bus. The Embedded 8840U supports DDR5 with a dual-channel bus. Both support ECC memory. The PCIe configurations differ as well: the AI Max+ 392 has Gen 4 with 16 lanes (CPU only), while the Embedded 8840U has Gen 4 with 20 lanes (CPU only). These differences point to different design priorities: the AI Max+ 392 maximizes memory bandwidth, while the Embedded 8840U maximizes peripheral connectivity relative to its power budget.

Specification Differences

The specifications that differ between the two processors are clear. The Ryzen AI Max+ 392 has 12 cores and 24 threads, while the Ryzen Embedded 8840U has 8 cores and 16 threads. The base clock of the AI Max+ 392 is 3.20 GHz, while the Embedded 8840U has a base clock of 3.30 GHz. The boost clock of the AI Max+ 392 is 5.00 GHz, while the Embedded 8840U has a boost clock of 5.10 GHz.

The TDP differs by 27 watts: 55 W for the AI Max+ 392 versus 28 W for the Embedded 8840U. The socket types are different: the AI Max+ 392 uses AMD Socket FP11, while the Embedded 8840U uses AMD Socket FP8. The architecture generation is Zen 5 for the AI Max+ 392 and Zen 4 for the Embedded 8840U. The codenames are Strix Halo and Hawk Point, respectively.

Cache sizes differ at every level except L2. The AI Max+ 392 has 80 KB L1 per core versus 64 KB L1 per core for the Embedded 8840U. Both have 1 MB L2 per core. The shared L3 is 64 MB for the AI Max+ 392 versus 16 MB for the Embedded 8840U. Memory support shows LPDDR5X for the AI Max+ 392 and DDR5 for the Embedded 8840U. The memory bus is quad-channel versus dual-channel, and the bandwidth is 256.0 GB/s versus 89.6 GB/s. The integrated graphics are Radeon 8060S versus Radeon 780M. The PCIe lanes are 16 versus 20, both Gen 4. The release dates also differ: the AI Max+ 392 released on 2026-01-05, while the Embedded 8840U released on 2024-04-01.

Head-to-Head Benchmarks

The head-to-head benchmark data is sparse, but the individual benchmark results for the Ryzen AI Max+ 392 provide a detailed picture. The database shows a PassMark multithread score of 45231 for the AI Max+ 392. The Embedded 8840U has no recorded benchmark scores in the database, which limits direct comparison. The AI Max+ 392 posts a single-thread score of 3927, a floating-point math score of 99548, and an integer math score of 152414.

The data compression score for the AI Max+ 392 is 554760, while the data encryption score is 27784. The extended instructions score is 45666, and the find prime numbers score is 320. The physics score is 2887, and the random string sorting score is 59487. These scores indicate strong performance across varied computational tasks. The average benchmark score for the AI Max+ 392 is 90541, placing it in the 96th percentile of all CPUs in the database.

The nearest rivals for the AI Max+ 392 help contextualize its performance. The Intel Xeon 654 has an average score of 90717, which is 0.2% lower than the AI Max+ 392. The AMD Ryzen 9 9955HX has an average score of 91199, which is 0.7% lower than the AI Max+ 392. The Intel Xeon w7-2575X has an average score of 88172, which is 2.7% higher than the AI Max+ 392. The Intel Xeon 6736P has an average score of 87864, which is 3.0% higher than the AI Max+ 392. These deltas show that the AI Max+ 392 sits in a competitive band near several workstation-class processors, slightly ahead of two Xeon models and slightly behind the Ryzen 9 9955HX.

The Embedded 8840U has no benchmark entries, so its performance cannot be measured directly from the database. However, its specification differences (fewer cores, smaller cache, lower memory bandwidth) strongly suggest it would trail the AI Max+ 392 in multi-threaded and memory-bound workloads. The AI Max+ 392's 64 MB L3 cache and 256.0 GB/s memory bandwidth are structural advantages that the Embedded 8840U cannot match.

The Verdict

The data clearly separates these two processors by intended use. The AMD Ryzen AI Max+ 392 is the higher-performance part in nearly every measurable dimension. It has 50% more cores, 4x the L3 cache, and nearly 3x the memory bandwidth. Its benchmark scores place it in the 96th percentile of all CPUs, with an average score of 90541. It is competitive with workstation Xeon processors, trailing the Intel Xeon w7-2575X by only 2.7% and the Intel Xeon 6736P by 3.0%. It also edges out the Intel Xeon 654 by 0.2% and the AMD Ryzen 9 9955HX by 0.7%.

The AMD Ryzen Embedded 8840U is a more power-conscious part. Its 28 W TDP is less than half of the 55 W TDP of the AI Max+ 392. It also provides more PCIe lanes (20 versus 16), which may be important for embedded systems that need to connect multiple peripheral devices. Its higher boost clock (5.10 GHz versus 5.00 GHz) and higher base clock (3.30 GHz versus 3.20 GHz) offer a slight single-thread frequency advantage, though this is offset by the smaller L1 cache and much smaller L3 cache.

The choice comes down to workload requirements. For mobile workstations, high-end laptops, or any system that needs substantial multi-threaded compute and high memory bandwidth, the Ryzen AI Max+ 392 is the data-backed selection. Its 12 cores, 24 threads, and quad-channel LPDDR5X memory interface deliver the throughput that demanding applications require. For embedded systems with strict power limits and a need for peripheral connectivity, the Ryzen Embedded 8840U is the appropriate part, provided the workload fits within its 8-core, 16-thread configuration and 89.6 GB/s memory bandwidth. The database does not include benchmark results for the Embedded 8840U, so its performance relative to the AI Max+ 392 cannot be quantified, but its specifications indicate a clear performance gap in favor of the AI Max+ 392.