AMD Ryzen 5 3501U vs AMD Ryzen Embedded 9900X Comparison

Where Each One Wins

The AMD Ryzen 5 3501U and AMD Ryzen Embedded 9900X occupy completely different positions in the processor landscape, and the recorded data reflects that split clearly. The Ryzen 5 3501U is a 15 W mobile part designed for thin-and-light laptops, while the Ryzen Embedded 9900X is a 120 W desktop-class embedded processor aimed at high-throughput workloads. Their respective strengths are defined by their thermal envelopes, core counts, and memory architectures.

For the Ryzen 5 3501U, the benchmark results show a processor that delivers solid single-thread performance relative to its power class. Its PassMark single-thread score of 2136 places it in a competitive position for everyday productivity tasks, browser workloads, and office applications where per-core responsiveness matters more than raw multi-core throughput. The data compression score of 87380 indicates that the Picasso-based chip handles compression algorithms efficiently, likely benefiting from its 4 MB shared L3 cache. The random string sorting score of 10414 similarly suggests strong performance in memory-bound sorting operations, which is a common workload in data processing and database applications.

The Ryzen Embedded 9900X, on the other hand, has no recorded benchmark scores in the database. Its advantage is structural rather than measured: 12 cores with 24 threads, a 4.40 GHz base clock, and a 5.60 GHz boost clock. The 64 MB L3 cache and DDR5 memory support with 89.6 GB/s bandwidth position it for heavily parallel workloads such as virtualization, container orchestration, and multi-tenant server environments. The 89.6 GB/s memory bandwidth is more than double the 38.4 GB/s of the Ryzen 5 3501U, which directly translates to faster data movement in memory-intensive applications.

The Ryzen 5 3501U wins in the mobile segment because its 15 W TDP allows it to operate in fanless or low-noise designs where the 120 W thermal requirement of the Embedded 9900X would be impossible to meet. Conversely, the Embedded 9900X wins in any scenario where sustained multi-threaded throughput is the priority, as its core count and clock speeds provide a theoretical compute capacity that the 3501U cannot approach.

Architecture Differences

The two processors represent two distinct generations of AMD microarchitecture, separated by multiple design iterations. The Ryzen 5 3501U uses the Picasso architecture, which is built on the Zen+ microarchitecture. It is fabricated on a 12 nm process node at GlobalFoundries and contains 4,940 million transistors on a 210 mm² die. The Ryzen Embedded 9900X uses the Granite Ridge architecture, which is built on the Zen 5 microarchitecture. It is fabricated on a 4 nm process node at TSMC and contains 16,630 million transistors across a dual-chiplet design with two 70.6 mm² dies.

The core configuration differs substantially. The 3501U has 4 cores and 4 threads, meaning no simultaneous multithreading. The Embedded 9900X has 12 cores and 24 threads, meaning each core supports two threads. This 6x difference in thread count is the single largest architectural gap between the two parts.

Cache hierarchies also diverge significantly. The 3501U has 96 KB of L1 cache per core, 512 KB of L2 cache per core, and 4 MB of shared L3 cache. The Embedded 9900X has 80 KB of L1 cache per core, 1 MB of L2 cache per core, and 64 MB of L3 cache. While the per-core L1 is smaller on the newer chip, the L2 is doubled per core and the L3 is 16 times larger in total capacity.

Memory support reflects their respective eras. The 3501U supports DDR4 memory in a dual-channel configuration with 38.4 GB/s of bandwidth and no ECC support. The Embedded 9900X supports DDR5 memory in a dual-channel configuration with 89.6 GB/s of bandwidth and includes ECC memory support, which is critical for embedded and server deployments where data integrity is paramount.

PCIe connectivity also differs by generation. The 3501U uses PCIe Gen 3, while the Embedded 9900X uses PCIe Gen 5 with 24 lanes available from the CPU. This represents a substantial increase in both per-lane bandwidth and total lane count for expansion devices, storage controllers, and networking interfaces.

The integrated graphics solutions are named differently: the 3501U has Radeon Vega 8 graphics, while the Embedded 9900X has Radeon Graphics. Both are integrated, but the Vega 8 branding indicates a specific GPU configuration on the mobile part.

FAQ

Q: Which processor has more cores and threads?

A: The AMD Ryzen Embedded 9900X has 12 cores and 24 threads. The AMD Ryzen 5 3501U has 4 cores and 4 threads.

Q: What are the clock speed differences between the two?

A: The Ryzen 5 3501U has a base clock of 2.10 GHz and a boost clock of 3.70 GHz. The Ryzen Embedded 9900X has a base clock of 4.40 GHz and a boost clock of 5.60 GHz.

Q: How does memory bandwidth compare?

A: The Ryzen 5 3501U supports DDR4 with 38.4 GB/s of bandwidth. The Ryzen Embedded 9900X supports DDR5 with 89.6 GB/s of bandwidth, which is more than double the mobile part's throughput.

Q: Does either processor support ECC memory?

A: The Ryzen 5 3501U does not support ECC memory. The Ryzen Embedded 9900X does support ECC memory, making it suitable for embedded and server applications requiring error correction.

Q: What manufacturing processes are used?

A: The Ryzen 5 3501U is built on a 12 nm process at GlobalFoundries. The Ryzen Embedded 9900X is built on a 4 nm process at TSMC.

Q: Are these processors unlocked for overclocking?

A: The Ryzen 5 3501U has a locked multiplier. The Ryzen Embedded 9900X has an unlocked multiplier.

Specification Differences

The table below summarizes the key specification differences between the two processors as recorded in the database.

| Specification | AMD Ryzen 5 3501U | AMD Ryzen Embedded 9900X |

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

| Cores | 4 | 12 |

| Threads | 4 | 24 |

| Base Clock | 2.10 GHz | 4.40 GHz |

| Boost Clock | 3.70 GHz | 5.60 GHz |

| TDP | 15 W | 120 W |

| Socket | AMD Socket FP5 | AMD Socket AM5 |

| Codename | Picasso | Granite Ridge |

| Microarchitecture | Zen+ | Zen 5 |

| Process Node | 12 nm | 4 nm |

| Foundry | GlobalFoundries | TSMC |

| Transistors | 4,940 million | 16,630 million |

| Die Size | 210 mm² | 2x 70.6 mm² |

| L1 Cache | 96 KB per core | 80 KB per core |

| L2 Cache | 512 KB per core | 1 MB per core |

| L3 Cache | 4 MB shared | 64 MB |

| Memory Support | DDR4 | DDR5 |

| Memory Bandwidth | 38.4 GB/s | 89.6 GB/s |

| ECC Memory | No | Yes |

| PCIe | Gen 3 | Gen 5, 24 Lanes (CPU only) |

| Integrated Graphics | Radeon Vega 8 | Radeon Graphics |

| Market Segment | Mobile | Desktop |

| Multiplier Unlocked | No | Yes |

| Release Date | 2026-05-31 | 2025-10-06 |

| Part Number | YM3501C4T4MFG | 100-000000662E |

Head-to-Head Benchmarks

The head-to-head benchmark data in the database contains no direct comparison results between these two processors. The Ryzen 5 3501U has a full set of PassMark benchmark scores recorded, while the Ryzen Embedded 9900X has no benchmark entries at all. Therefore, a direct numerical comparison of their measured performance is not possible from the available data.

What can be analyzed is the Ryzen 5 3501U's absolute performance profile and its standing among rival processors. The database shows the 3501U achieves an average benchmark score of 14320, placing it in the 69th percentile of all CPUs tracked. Its nearest rivals in the database are the AMD Ryzen Embedded V2546 with an average score of 14336 and a delta of -0.1%, the AMD Ryzen 3 7320C with an average score of 14277 and a delta of 0.3%, the Intel Core 7 160UL with an average score of 14232 and a delta of 0.6%, and the Intel Core i5-10400F with an average score of 14185 and a delta of 1%. These deltas indicate that the 3501U is essentially performance-equivalent to the V2546, while being slightly ahead of the Ryzen 3 7320C, the Core 7 160UL, and the Core i5-10400F by margins of 0.3%, 0.6%, and 1% respectively.

Looking at the specific PassMark workloads for the 3501U, the data compression score of 87380 is by far the highest recorded value, indicating strong algorithmic efficiency in compression tasks. The integer math score of 26321 and floating point math score of 12707 show a roughly 2:1 ratio, which is typical for processors with limited SIMD throughput. The encryption score of 5580 and extended instructions score of 3274 are moderate values. The find prime numbers score of 21 is notably low, suggesting that this workload is not well optimized on the Picasso architecture. The multithread score of 7071 combined with a single-thread score of 2136 yields a scaling ratio of approximately 3.3x from single-thread to multi-thread, which is less than the theoretical 4x that would be expected from four fully utilized cores. The physics score of 483 and random string sorting score of 10414 round out the benchmark profile.

Given the absence of benchmark data for the Embedded 9900X, the database cannot provide measured performance deltas between the two. However, the specification differences in core count, clock speed, cache capacity, memory bandwidth, and process node all point to the Embedded 9900X holding a substantial theoretical advantage in throughput-oriented workloads. The 3501U's advantage lies in its 15 W thermal envelope, which enables mobile form factors that the 120 W Embedded 9900X cannot fit into. The database records both processors as active in production, serving different market segments: mobile computing for the 3501U and desktop-class embedded applications for the 9900X.