AMD Ryzen Embedded 9900X3D vs Intel Core Ultra 9 386H Comparison

Where Each One Wins

The recorded data splits this comparison cleanly by workload type and platform intent. The AMD Ryzen Embedded 9900X3D is a desktop-class processor with 12 cores and 24 threads, built for sustained multi-threaded throughput. The Intel Core Ultra 9 386H is a mobile processor with 16 cores and 16 threads, designed for power-constrained environments. Neither part dominates the other across all metrics; each holds clear advantages in specific areas.

The Intel Core Ultra 9 386H wins outright in every benchmark category present in the database. Its Cinebench R23 multi-core score of 20547 and single-core score of 2071.5 demonstrate strong performance for a mobile chip. In PassMark tests, it records 35399 in multithreaded performance, 4218 in single-thread performance, and 108527 in floating point math. These numbers place it in the 88th percentile of all CPUs in the database, with an average benchmark score of 43210.

The AMD Ryzen Embedded 9900X3D has no recorded benchmark scores in the database, and its percentile vs all CPUs is 50 with an average benchmark score of 0. This means the database contains no direct performance measurements for the AMD part. The comparison therefore relies on architectural differences and the Intel part's recorded results. The Intel chip's wins are measured; the AMD chip's capabilities are inferred from its specifications alone.

The use-case split is straightforward. The Intel Core Ultra 9 386H suits workloads where the database has verified performance: rendering, math-heavy tasks, and general multi-threaded applications. The AMD Ryzen Embedded 9900X3D, with its 128 MB of L3 cache and 24 threads, targets embedded and desktop scenarios where cache capacity and thread count matter more than the mobile efficiency profile of the Intel chip.

Architecture Differences

The two processors come from different design philosophies. The AMD Ryzen Embedded 9900X3D uses the Granite Ridge codename, based on Zen 5 architecture, manufactured on a 4 nm process at TSMC. The Intel Core Ultra 9 386H uses the Panther Lake codename, based on Panther Lake architecture, manufactured on a 3 nm process at Intel's own foundry.

Core counts differ significantly. The AMD part has 12 cores and 24 threads, indicating simultaneous multithreading support. The Intel part has 16 cores and 16 threads, meaning no hyperthreading on this particular SKU. The thread counts are closer than the core counts suggest, with the AMD part offering 24 threads versus the Intel part's 16 threads.

Cache hierarchies diverge sharply. The AMD Ryzen Embedded 9900X3D has 80 KB of L1 cache per core, 1 MB of L2 cache per core, and 128 MB of L3 cache. The Intel Core Ultra 9 386H has 192 KB of L1 per core, 2.5 MB of L2 per core, and 18 MB of shared L3. The AMD part's 128 MB L3 is roughly seven times larger than the Intel part's 18 MB, which matters for workloads that repeatedly access large datasets.

Clock speeds tell a different story. The AMD part has a base clock of 4.40 GHz and a boost clock of 5.50 GHz. The Intel part has a base clock of 2.10 GHz and a boost clock of 4.90 GHz. The AMD part runs at higher clocks at both ends, but the Intel part's lower base clock reflects its mobile power envelope.

Power and packaging differ completely. The AMD part has a TDP of 120 W and uses AMD Socket AM5, a desktop socket. The Intel part has a TDP of 25 W and uses Intel BGA 2540, a ball-grid array socket for mobile systems. The AMD part has an unlocked multiplier; the Intel part does not.

Memory support overlaps on DDR5 but diverges elsewhere. Both support dual-channel memory. The AMD part supports DDR5 with a memory bandwidth of 89.6 GB/s and ECC memory. The Intel part supports DDR5 and LPDDR5X with a memory bandwidth of 115.2 GB/s but no ECC. The Intel part's higher memory bandwidth comes from its support for LPDDR5X.

PCIe lanes differ. The AMD part provides Gen 5 with 24 lanes from the CPU. The Intel part provides Gen 5 with 12 lanes from the CPU. Integrated graphics also differ: the AMD part uses Radeon Graphics, the Intel part uses Intel Xe3 Graphics.

Release timing and market segment separate them further. The AMD part released on October 6, 2025, targets the Desktop market segment, and carries the part number 100-000001368E. The Intel part released on January 4, 2026, targets the Mobile market segment, and carries the part number SA4R5Q9EH.

The Verdict

The data supports a clear split. The Intel Core Ultra 9 386H is the only part in this comparison with recorded benchmark scores. Its average benchmark score of 43210 places it in the 88th percentile of all CPUs. Its nearest rivals in the database are the AMD Ryzen AI Max PRO 385 at 43326 (0.3% higher), the AMD Ryzen AI 9 465 at 43431 (0.5% higher), the Intel Core i9-12900 at 42906 (0.7% lower), and the Intel Core i9-12900KF at 42830 (0.9% lower). The Intel Core Ultra 9 386H sits within a tight 1% band of these four desktop and mobile parts, which indicates its performance class is well established.

The AMD Ryzen Embedded 9900X3D has no recorded benchmarks, so no verified performance claims can be made from the database. Its specifications suggest it targets a different role: 24 threads, 128 MB of L3 cache, 5.50 GHz boost, and a 120 W TDP on a desktop socket. The database cannot confirm how those specifications translate into real-world scores.

Who should pick which depends on what the database actually measures. If verified benchmark results matter, the Intel Core Ultra 9 386H is the only choice with recorded data. If the use case demands a desktop-embedded processor with high thread counts, large L3 cache, ECC memory support, and an unlocked multiplier, the AMD Ryzen Embedded 9900X3D offers those features, but without measured performance in the database.

FAQ

Q: Which processor has more cores?

A: The Intel Core Ultra 9 386H has 16 cores, while the AMD Ryzen Embedded 9900X3D has 12 cores.

Q: Which processor has more threads?

A: The AMD Ryzen Embedded 9900X3D has 24 threads, while the Intel Core Ultra 9 386H has 16 threads.

Q: Which processor has a larger L3 cache?

A: The AMD Ryzen Embedded 9900X3D has 128 MB of L3 cache, compared to 18 MB of shared L3 on the Intel Core Ultra 9 386H.

Q: Does the Intel Core Ultra 9 386H support ECC memory?

A: No. The Intel Core Ultra 9 386H does not support ECC memory, while the AMD Ryzen Embedded 9900X3D does.

Q: Which processor has a higher boost clock?

A: The AMD Ryzen Embedded 9900X3D has a boost clock of 5.50 GHz, compared to 4.90 GHz on the Intel Core Ultra 9 386H.

Q: What is the Intel Core Ultra 9 386H's average benchmark score and percentile?

A: The Intel Core Ultra 9 386H has an average benchmark score of 43210 and sits in the 88th percentile of all CPUs in the database.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark entries for these two processors, but it does contain a full benchmark suite for the Intel Core Ultra 9 386H. Those results establish the Intel part's performance baseline.

In Cinebench R15, the Intel Core Ultra 9 386H scores 3223 in multi-core and 303.5 in single-core. In Cinebench R20, it scores 12820 in multi-core and 1809 in single-core. In Cinebench R23, it scores 20547 in multi-core and 2071.5 in single-core. These three successive Cinebench versions show consistent scaling, with the R23 multi-core score nearly 1.6 times the R15 multi-core score.

PassMark results for the Intel part cover a wide range of workloads. Data compression scores 352365, data encryption scores 27150, and extended instructions score 29138. Prime number finding scores 341, floating point math scores 108527, and integer math scores 87284. The multithread score is 35399, physics scores 3028, and random string sorting scores 42135. Single-thread performance is recorded twice in the database, both times at 4218.

The AMD Ryzen Embedded 9900X3D has no corresponding benchmark entries. The database lists zero benchmarks for this part, so no direct score comparison is possible. The Intel part's wins are absolute in the sense that it is the only part with measured results, but the margin of victory over the AMD part cannot be quantified from the database.

The Intel part's nearest rival data provides context. The AMD Ryzen AI Max PRO 385 scores 43326, which is 0.3% higher than the Intel Core Ultra 9 386H. The AMD Ryzen AI 9 465 scores 43431, 0.5% higher. The Intel Core i9-12900 scores 42906, 0.7% lower. The Intel Core i9-12900KF scores 42830, 0.9% lower. This places the Intel Core Ultra 9 386H squarely between two AMD mobile parts and two Intel desktop parts, all within a 1% range.

Specification Differences

The two processors differ in nearly every specification category recorded in the database.

Core and thread counts: the AMD Ryzen Embedded 9900X3D has 12 cores and 24 threads. The Intel Core Ultra 9 386H has 16 cores and 16 threads.

Clock speeds: the AMD part has a base clock of 4.40 GHz and a boost clock of 5.50 GHz. The Intel part has a base clock of 2.10 GHz and a boost clock of 4.90 GHz.

TDP: the AMD part is rated at 120 W. The Intel part is rated at 25 W.

Socket: the AMD part uses AMD Socket AM5. The Intel part uses Intel BGA 2540.

Process node and foundry: the AMD part uses a 4 nm process at TSMC. The Intel part uses a 3 nm process at Intel.

Cache: the AMD part has 80 KB of L1 per core, 1 MB of L2 per core, and 128 MB of L3. The Intel part has 192 KB of L1 per core, 2.5 MB of L2 per core, and 18 MB of shared L3. Transistor count and die size are recorded for the AMD part (16,630 million transistors, 2x 70.6 mm² dies) but not for the Intel part.

Memory: the AMD part supports DDR5 with dual-channel bus, 89.6 GB/s bandwidth, and ECC. The Intel part supports DDR5 and LPDDR5X with dual-channel bus, 115.2 GB/s bandwidth, and no ECC.

PCIe: the AMD part has Gen 5 with 24 lanes from the CPU. The Intel part has Gen 5 with 12 lanes from the CPU.

Integrated graphics: the AMD part uses Radeon Graphics. The Intel part uses Intel Xe3 Graphics.

Other differences: the AMD part has an unlocked multiplier and a part number of 100-000001368E. The Intel part has a locked multiplier and a part number of SA4R5Q9EH. The AMD part released on October 6, 2025, and the Intel part released on January 4, 2026. Both are listed as Active in production status.