AMD Ryzen Embedded 9950X3D vs Intel Core Ultra 7 356H Comparison

The Verdict

The recorded data presents a clear split between these two 16-core processors. The AMD Ryzen Embedded 9950X3D is a desktop-class part built for maximum throughput with 32 threads, a 5.70 GHz boost clock, and a massive 128 MB L3 cache. The Intel Core Ultra 7 356H is a mobile processor with 16 threads, a 4.70 GHz boost clock, and an 18 MB shared L3 cache, designed for efficiency within a 25 W TDP envelope.

Benchmark results show the Intel part holds a significant single-thread lead. In Cinebench R23 single-core, Intel scores 2040, while the AMD part has no recorded benchmark score in the database. The Intel part also posts an 87th percentile ranking among all CPUs, with an average benchmark score of 41215. The AMD part sits at the 50th percentile with an average score of 0, indicating no recorded performance data. For anyone relying solely on measured performance, the Intel Core Ultra 7 356H is the only option with verifiable results. The AMD part should be chosen only when its architectural features, such as the 128 MB L3 cache, 24 PCIe Gen 5 lanes, or ECC memory support, are required, and raw benchmark validation is not yet available.

Architecture Differences

The AMD Ryzen Embedded 9950X3D uses the Granite Ridge architecture on a 4 nm TSMC process. It is built on the Zen 5 core design and belongs to the Ryzen Embedded 9000 series. The Intel Core Ultra 7 356H uses the Panther Lake architecture on a 3 nm Intel process, belonging to the Core Ultra Series 3. Both processors have 16 cores, but the AMD part supports 32 threads while the Intel part supports 16 threads, meaning the AMD processor has simultaneous multithreading enabled.

The AMD part features 80 KB of L1 cache per core and 1 MB of L2 cache per core, totaling 128 MB of L3 cache. The Intel part has 192 KB of L1 cache per core and 2.5 MB of L2 cache per core, with 18 MB of shared L3 cache. The AMD processor uses dual-channel DDR5 memory with a bandwidth of 89.6 GB/s and supports ECC memory. The Intel processor supports both DDR5 and LPDDR5X memory, also dual-channel, with a higher bandwidth of 115.2 GB/s, but does not support ECC memory.

The AMD part provides 24 PCIe Gen 5 lanes (CPU only), while the Intel part provides 12 PCIe Gen 5 lanes (CPU only). The AMD processor includes Radeon Graphics as integrated graphics, while the Intel processor includes Intel Xe3 Graphics. The AMD part uses the AMD Socket AM5 and has an unlocked multiplier. The Intel part uses Intel BGA 2540 and has a locked multiplier.

Head-to-Head Benchmarks

The head-to-head benchmark table in the database is empty, and the win counts for both processors are zero. However, the Intel Core Ultra 7 356H has a full set of recorded benchmark scores. These results show a strong single-thread performance profile. In Cinebench R23 single-core, the Intel part scores 2040. In Cinebench R20 single-core, it scores 1715, and in Cinebench R15 single-core, it scores 303. The PassMark single-thread score is 4072.

Multi-threaded results for the Intel part are also present. Cinebench R23 multi-core scores 18395, Cinebench R20 multi-core scores 12153, and Cinebench R15 multi-core scores 3055. PassMark multi-thread score is 33978. The Intel part also shows strong performance in specific workloads: PassMark data compression scores 336177, data encryption scores 26345, extended instructions score 27898, floating point math scores 103128, integer math scores 83111, physics scores 2895, and random string sorting scores 40990. The find prime numbers score is 327.

The AMD Ryzen Embedded 9950X3D has no recorded benchmark scores in the database. As a result, direct comparisons between the two parts cannot be made from measured data. The nearest rivals for the Intel part provide context: the AMD Ryzen AI 5 PRO 440 has an average score of 41208 with a delta of 0%, the Intel Core Ultra 7 366H scores 41263 with a -0.1% delta, the AMD Ryzen 9 5900X scores 41376 with a -0.4% delta, and the Intel Core Ultra X7 358H scores 40967 with a 0.6% delta. The Intel Core Ultra 7 356H sits within a narrow band of these rivals, trailing the Ryzen 9 5900X by 0.4% and leading the Core Ultra X7 358H by 0.6%.

FAQ

Q: Which processor has more threads?

A: The AMD Ryzen Embedded 9950X3D has 32 threads, while the Intel Core Ultra 7 356H has 16 threads. Both have 16 cores.

Q: What is the difference in L3 cache size?

A: The AMD part has 128 MB of L3 cache, while the Intel part has 18 MB of shared L3 cache.

Q: Which processor supports ECC memory?

A: The AMD Ryzen Embedded 9950X3D supports ECC memory. The Intel Core Ultra 7 356H does not support ECC memory.

Q: What is the memory bandwidth for each processor?

A: The AMD part has a memory bandwidth of 89.6 GB/s, while the Intel part has a memory bandwidth of 115.2 GB/s. Both use dual-channel memory, but the Intel part supports LPDDR5X in addition to DDR5.

Q: Which processor has a higher boost clock?

A: The AMD Ryzen Embedded 9950X3D has a boost clock of 5.70 GHz, while the Intel Core Ultra 7 356H has a boost clock of 4.70 GHz.

Q: Which processor has a higher recorded single-thread benchmark score?

A: The Intel Core Ultra 7 356H has a recorded Cinebench R23 single-core score of 2040. The AMD Ryzen Embedded 9950X3D has no recorded benchmark scores in the database.

Where Each One Wins

The Intel Core Ultra 7 356H wins in every category where measured data exists. Its single-thread performance is verifiable across multiple Cinebench versions and PassMark tests. The multi-thread scores, while lower than what a 32-thread part would likely achieve, are still recorded and can be used for comparison. The Intel part also holds a higher memory bandwidth at 115.2 GB/s and supports LPDDR5X, which can be an advantage in memory-sensitive mobile workloads. Its 87th percentile ranking among all CPUs indicates strong overall performance relative to the broader processor market.

The AMD Ryzen Embedded 9950X3D wins on architectural specifications. It offers 32 threads, which is double the thread count of the Intel part. Its 128 MB L3 cache is substantially larger than the Intel part's 18 MB. The AMD part provides 24 PCIe Gen 5 lanes, double the Intel part's 12 lanes. It supports ECC memory, which the Intel part does not. The AMD part has a higher boost clock at 5.70 GHz and a higher base clock at 4.30 GHz versus 1.90 GHz for Intel. The AMD part also has an unlocked multiplier, making it suitable for overclocking, while the Intel part is locked. The AMD part uses the AM5 socket, which is a desktop platform, while the Intel part uses BGA 2540, a mobile socket.

For workloads that depend on massive cache, high thread counts, ECC memory, or extensive PCIe connectivity, the AMD part has the specification advantage. For any workload where measured benchmark performance is required, the Intel part is the only one with data.

Specification Differences

| Specification | AMD Ryzen Embedded 9950X3D | Intel Core Ultra 7 356H |

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

| Series | 9000 series | Core Ultra Series 3 |

| Architecture | Granite Ridge | Panther Lake |

| Process Node | 4 nm (TSMC) | 3 nm (Intel) |

| Cores | 16 | 16 |

| Threads | 32 | 16 |

| Base Clock | 4.30 GHz | 1.90 GHz |

| Boost Clock | 5.70 GHz | 4.70 GHz |

| TDP | 170 W | 25 W |

| Socket | AMD Socket AM5 | Intel BGA 2540 |

| L1 Cache | 80 KB per core | 192 KB per core |

| L2 Cache | 1 MB per core | 2.5 MB per core |

| L3 Cache | 128 MB | 18 MB (shared) |

| Memory Support | DDR5 | DDR5, LPDDR5X |

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

| Memory Bandwidth | 89.6 GB/s | 115.2 GB/s |

| ECC Memory | Yes | No |

| PCIe | Gen 5, 24 lanes (CPU only) | Gen 5, 12 lanes (CPU only) |

| Integrated Graphics | Radeon Graphics | Intel Xe3 Graphics |

| Multiplier | Unlocked | Locked |

| Market Segment | Desktop | Mobile |

| Release Date | 2025-10-06 | 2026-01-04 |