AMD Ryzen AI Max PRO 385 vs AMD Ryzen Embedded 9900X Comparison

Head-to-Head Benchmarks

The benchmark database contains a full suite of results for the AMD Ryzen AI Max PRO 385, while the AMD Ryzen Embedded 9900X currently has no recorded benchmark scores. This means the head-to-head comparison is one-sided: the data shows the Ryzen AI Max PRO 385 delivering a complete performance profile, whereas the Ryzen Embedded 9900X has no measurable results to compare against.

Looking at the Ryzen AI Max PRO 385's absolute scores, it posts a Cinebench R23 multi-core score of 28424 and a single-core score of 4012. In Cinebench R20, it reaches 11938 multi-core and 1685 single-core. The older Cinebench R15 test shows 2865 multi-core and 404 single-core. These numbers indicate a strong 8-core, 16-thread Zen 5 part with a 5.00 GHz boost clock.

The Passmark suite adds further detail. The Ryzen AI Max PRO 385 scores 105056 in integer math, 69580 in floating point math, and 31442 in extended instructions. Data compression hits 379448, while data encryption reaches 18978. Random string sorting scores 40784, and the find prime numbers test returns 157. The multithread score is 32075, with a physics score of 1711. Single-thread performance is recorded at 3995.

Relative to its nearest rivals in the database, the Ryzen AI Max PRO 385 sits in a tight cluster. Its average benchmark score is 43326. The AMD Ryzen AI 9 465 averages 43431, a delta of -0.2 percent. The Intel Core Ultra 9 386H averages 43210, a delta of +0.3 percent. The AMD Ryzen 7 170 averages 43689, a delta of -0.8 percent. The AMD Ryzen 7 PRO 7745 averages 43704, a delta of -0.9 percent. The Ryzen AI Max PRO 385 effectively trades blows with these parts, landing within a single percentage point of each.

The percentile ranking places the Ryzen AI Max PRO 385 at the 88th percentile among all CPUs in the database. That is a high position, indicating the recorded scores put it above the vast majority of tested processors. The Ryzen Embedded 9900X, by contrast, has a percentile of 50 and an average benchmark score of 0, which reflects the absence of any recorded measurements rather than a literal performance result.

FAQ

Q: What is the core and thread count difference between the two processors?

A: The AMD Ryzen AI Max PRO 385 has 8 cores and 16 threads. The AMD Ryzen Embedded 9900X has 12 cores and 24 threads.

Q: Which processor has a higher boost clock?

A: The AMD Ryzen Embedded 9900X boosts to 5.60 GHz. The AMD Ryzen AI Max PRO 385 boosts to 5.00 GHz.

Q: Do both processors support ECC memory?

A: Yes, both list ECC memory support as true.

Q: What is the memory bandwidth of each processor?

A: The AMD Ryzen AI Max PRO 385 has a memory bandwidth of 256.0 GB/s with quad-channel LPDDR5X support. The AMD Ryzen Embedded 9900X has a memory bandwidth of 89.6 GB/s with dual-channel DDR5 support.

Q: What is the process node for both chips?

A: Both are fabricated on a 4 nm process at TSMC.

Q: Which processor has a larger L3 cache?

A: The AMD Ryzen Embedded 9900X has 64 MB of L3 cache. The AMD Ryzen AI Max PRO 385 has 32 MB of shared L3 cache.

The Verdict

The data supports a clear split. The AMD Ryzen AI Max PRO 385 is the only one of the two with any recorded benchmark results, and those results place it at the 88th percentile. Its nearest rivals all sit within one percentage point of its average score, meaning the performance profile is competitive at the top end of the database. The AMD Ryzen Embedded 9900X has no benchmark data at all, so no performance verdict can be drawn from measurements.

For workloads requiring a mobile platform with high memory bandwidth, the Ryzen AI Max PRO 385 is the choice. Its 256.0 GB/s memory bandwidth dwarfs the 89.6 GB/s of the Embedded 9900X. The Ryzen AI Max PRO 385 also integrates a Radeon 8050S GPU, while the Embedded 9900X has generic Radeon Graphics. The socket and platform differ fundamentally: FP11 for mobile versus AM5 for desktop embedded.

For workloads requiring more cores, higher clocks, and a larger L3 cache, the Ryzen Embedded 9900X has the structural advantage on paper. Twelve cores and 24 threads versus 8 and 16, a 5.60 GHz boost versus 5.00 GHz, and 64 MB L3 versus 32 MB all point to higher multi-threaded potential. But without recorded benchmark scores, the database cannot confirm that advantage in practice.

Specification Differences

The two processors differ across nearly every specification category. The Ryzen AI Max PRO 385 is a mobile part with 8 cores and 16 threads, a base clock of 3.60 GHz, and a boost clock of 5.00 GHz. The Ryzen Embedded 9900X is a desktop part with 12 cores and 24 threads, a base clock of 4.40 GHz, and a boost clock of 5.60 GHz.

Thermal design power differs substantially. The Ryzen AI Max PRO 385 has a TDP of 55 watts. The Ryzen Embedded 9900X has a TDP of 120 watts.

Sockets are incompatible. The Ryzen AI Max PRO 385 uses AMD Socket FP11. The Ryzen Embedded 9900X uses AMD Socket AM5.

Memory support diverges sharply. The Ryzen AI Max PRO 385 uses LPDDR5X with a quad-channel bus and 256.0 GB/s bandwidth. The Ryzen Embedded 9900X uses DDR5 with a dual-channel bus and 89.6 GB/s bandwidth.

PCIe connectivity also differs. The Ryzen AI Max PRO 385 offers Gen 4 with 16 lanes (CPU only). The Ryzen Embedded 9900X offers Gen 5 with 24 lanes (CPU only).

The multiplier unlock status varies. The Ryzen AI Max PRO 385 has a locked multiplier. The Ryzen Embedded 9900X has an unlocked multiplier.

Release dates differ by roughly nine months. The Ryzen AI Max PRO 385 launched on January 5, 2025. The Ryzen Embedded 9900X launched on October 6, 2025.

Architecture Differences

Both processors use the Zen 5 architecture on a 4 nm TSMC process. The Ryzen AI Max PRO 385 carries the codename Strix Halo and belongs to the Ryzen AI Max PRO generation. The Ryzen Embedded 9900X carries the codename Granite Ridge and belongs to the Ryzen Embedded generation, specifically Zen 5 (Granite Ridge).

The Ryzen Embedded 9900X has a documented transistor count of 16,630 million and a die size of 2x 70.6 mm². The Ryzen AI Max PRO 385 has no transistor or die size data in the database.

Cache layouts are identical at the L1 and L2 levels. Both have 80 KB of L1 per core and 1 MB of L2 per core. The L3 cache differs: the Ryzen AI Max PRO 385 has 32 MB shared, while the Ryzen Embedded 9900X has 64 MB.

The integrated graphics differ in type. The Ryzen AI Max PRO 385 includes a Radeon 8050S. The Ryzen Embedded 9900X includes a generic Radeon Graphics solution.

The Ryzen AI Max PRO 385 is classified as Mobile in the database. The Ryzen Embedded 9900X is classified as Desktop. Both are active production parts.

Where Each One Wins

The Ryzen AI Max PRO 385 wins in every category where recorded data exists. It has benchmark scores across Cinebench and Passmark suites, and those scores put it at the 88th percentile. Its nearest rivals are all within one percentage point, so the wins are narrow but consistent. The memory bandwidth advantage is the most decisive: 256.0 GB/s versus 89.6 GB/s makes the mobile part the clear choice for memory-intensive workloads.

The Ryzen Embedded 9900X wins on paper in core count, thread count, base and boost clocks, L3 cache size, PCIe generation and lane count, and multiplier unlock. It also has a higher TDP budget, which supports sustained operation under heavy loads. The 64 MB L3 cache is double that of the Ryzen AI Max PRO 385, and the 12-core configuration provides 50 percent more cores and threads.

The use-case split follows these differences. The Ryzen AI Max PRO 385 suits mobile platforms where memory bandwidth and integrated graphics matter, and where the 55-watt TDP fits a thinner chassis. The Ryzen Embedded 9900X suits desktop embedded systems where multi-threaded throughput, higher clocks, and expansive cache are priorities, and where a 120-watt thermal envelope is acceptable.

The database shows no benchmark results for the Ryzen Embedded 9900X, so its wins are purely structural. The Ryzen AI Max PRO 385's wins are measured and verified. For anyone selecting between the two, the choice depends on whether measured performance or theoretical specifications take precedence.