AMD Ryzen 3 5305G vs AMD Ryzen Embedded 9900X3D Comparison

Head-to-Head Benchmarks

The recorded data shows no head-to-head benchmark entries for this pairing, and both processors carry an average benchmark score of 0. The database lists zero wins for each side, meaning there is no direct performance comparison to walk through with exact numbers. What the data does provide is a structural contrast that is unusually sharp: a 4-core, 8-thread Zen 3 desktop part against a 12-core, 24-thread Zen 5 embedded part. Without measured scores, the head-to-head section must rely on the architectural and specification records, which are substantial enough to indicate where the larger processor will dominate.

The Ryzen 3 5305G records a base clock of 4.00 GHz and a boost clock of 4.20 GHz. The Ryzen Embedded 9900X3D records a base clock of 4.40 GHz and a boost clock of 5.50 GHz. Even at base frequency, the embedded part holds a 0.40 GHz advantage, and at boost it extends that to 1.30 GHz. Those are direct clock-speed differences recorded in the database, and they apply across three times the core count. The 5305G has a 65 TDP rating, while the 9900X3D has a 120 TDP rating, so the larger part consumes nearly double the thermal envelope to feed those extra cores and clocks.

Multi-threaded workloads are the obvious separation point. The 9900X3D offers 12 cores and 24 threads against 4 cores and 8 threads, a 3x core advantage and a 3x thread advantage. Single-thread performance also favors the embedded part based on clock records alone, since both use modern AMD cores but the 9900X3D's 5.50 GHz boost is substantially higher than the 5305G's 4.20 GHz. The database shows no benchmark scores to quantify these deltas, but the raw specifications point in one direction for every measured category except power draw and platform cost, which are not priced in the record.

Architecture Differences

The two processors come from different generations and process nodes. The Ryzen 3 5305G is listed as Zen 3 with the codename Cezanne, built on TSMC's 7 nm process. The Ryzen Embedded 9900X3D is Zen 5 with the codename Granite Ridge, built on TSMC's 4 nm process. That node shrink from 7 nm to 4 nm is a defining difference, allowing the newer part to fit more transistors and more cache into a similar thermal budget.

Transistor counts confirm the generational gap. The 5305G contains 10,700 million transistors on a die size of 180 mm². The 9900X3D contains 16,630 million transistors across a dual-die layout of 2x 70.6 mm². The chiplet design of the 9900X3D uses two smaller dies totaling roughly 141.2 mm², which is smaller than the monolithic 180 mm² die of the 5305G, yet it packs 55% more transistors by count. This reflects the density improvement of the 4 nm node.

Cache architecture is where the 3D V-Cache branding becomes visible. The 5305G provides 64 KB of L1 per core, 512 KB of L2 per core, and 8 MB of shared L3. The 9900X3D provides 80 KB of L1 per core, 1 MB of L2 per core, and 128 MB of L3. The L3 difference is extreme: 128 MB versus 8 MB, a 16x gap. That large L3 pool is the defining feature of the X3D line, designed to keep frequently accessed data on-die and reduce memory traffic. The per-core L1 and L2 figures also favor the 9900X3D, with 25% more L1 per core and double the L2 per core.

Memory support differs by generation. The 5305G uses DDR4 with dual-channel access and a recorded memory bandwidth of 51.2 GB/s. The 9900X3D uses DDR5 with dual-channel access and a recorded memory bandwidth of 89.6 GB/s. That is a 75% bandwidth advantage for the embedded part, which matters for workloads that stream large datasets. ECC memory support is absent on the 5305G and present on the 9900X3D, a meaningful distinction for embedded and server-adjacent use cases where data integrity is critical.

PCIe capabilities also separate the two. The 5305G provides Gen 3 with 16 CPU lanes, while the 9900X3D provides Gen 5 with 24 CPU lanes. That is two generations of PCIe bandwidth improvement and 50% more lanes. For storage, accelerators, or high-speed networking, the 9900X3D has a clear path forward, while the 5305G is limited to older Gen 3 interconnect.

Integrated graphics are present on both, but they are not equivalent. The 5305G uses Radeon Vega 6, while the 9900X3D uses a generic Radeon Graphics label. The database does not record shader counts or clock speeds for either iGPU, so a direct GPU performance comparison cannot be made from the data. What the record shows is that both processors can output video without a discrete card, which is notable for the embedded part given its 120 TDP and server-oriented positioning.

Socket and platform differ as well. The 5305G fits AMD Socket AM4, while the 9900X3D fits AMD Socket AM5. These are not interchangeable platforms, meaning any system build must commit to one motherboard ecosystem. The 5305G's AM4 platform uses DDR4, while AM5 uses DDR5, reinforcing the memory generation split.

Where Each One Wins

The Ryzen 3 5305G wins in power efficiency per the recorded TDP. At 65 watts, it draws less than the 9900X3D's 120 watts, making it better suited for compact desktops, low-power NAS builds, or any environment where thermal output and electricity draw are constrained. Its 4-core, 8-thread layout with a 4.20 GHz boost is adequate for lighter threaded tasks, and the Radeon Vega 6 iGPU adds display capability without a discrete card.

The 5305G also wins on platform simplicity. AM4 with DDR4 is a mature ecosystem, and the dual-channel 51.2 GB/s bandwidth is enough for office workloads, media playback, and light productivity. The unlocked multiplier on both parts means overclocking is possible, but the 5305G's lower core count and lower thermal headroom make it a more approachable target for modest tuning.

The Ryzen Embedded 9900X3D wins in nearly every raw performance category. Its 12 cores and 24 threads give it a 3x advantage in parallel throughput. Its 5.50 GHz boost clock is 1.30 GHz higher than the 5305G's 4.20 GHz boost, giving it the single-thread edge as well. The 128 MB L3 cache is 16x larger, which directly benefits workloads with large working sets, such as scientific computing, data analytics, and complex simulations. The 89.6 GB/s memory bandwidth is 75% higher, and ECC support makes it viable for error-sensitive embedded applications.

PCIe Gen 5 with 24 lanes gives the 9900X3D a major I/O advantage. Systems built around it can attach faster NVMe storage and multiple accelerators without bottlenecking. The 4 nm node and dual-die design also mean the 9900X3D delivers its higher performance from a smaller combined die area, though at double the TDP.

The 5305G is a desktop part released on 2025-02-23, while the 9900X3D is an embedded part released on 2025-10-06. The later release date for the 9900X3D aligns with its newer architecture and process node. Both are marked Active in production status.

The Verdict

The data splits cleanly along workload and platform lines. The Ryzen 3 5305G is the lower-power, lower-cost platform option with a 65 TDP, 4 cores, 8 threads, 8 MB L3, and DDR4 support. The Ryzen Embedded 9900X3D is the high-throughput option with a 120 TDP, 12 cores, 24 threads, 128 MB L3, DDR5 support, ECC memory, and PCIe Gen 5. For any multi-threaded, cache-sensitive, or I/O-heavy workload, the 9900X3D is the clear choice based on the recorded specifications. For a low-power desktop or embedded system where the workload fits within 4 cores and 8 threads, the 5305G uses far less power and runs on the older, simpler AM4 platform.

The 9900X3D's 5.50 GHz boost clock and 128 MB L3 are the standout records. The 5305G's 4.20 GHz boost and 8 MB L3 place it several tiers below in both clock speed and cache capacity. The 9900X3D also doubles the L2 per core, from 512 KB to 1 MB, and increases L1 per core from 64 KB to 80 KB. These are not marginal differences; they represent a full generational leap across node, cache, memory, and PCIe.

Neither processor has recorded benchmark scores in the database, so the verdict rests on specification comparison. The 9900X3D wins on cores, threads, clocks, cache, memory bandwidth, ECC support, PCIe generation, and lane count. The 5305G wins on TDP, die size, and platform maturity. The percentile field for both is 50, indicating they sit at the median of all CPUs tracked, but that field does not reflect their relative standing since no benchmark data is attached.

For a buyer selecting between these two, the decision is about workload scale and power budget. The 5305G fits low-power desktops. The 9900X3D fits high-performance embedded systems, workstations, and compute nodes. There is no overlap in their intended roles.

FAQ

Q: Which processor has more cores and threads?

A: The AMD Ryzen Embedded 9900X3D has 12 cores and 24 threads. The AMD Ryzen 3 5305G has 4 cores and 8 threads.

Q: How much L3 cache does each processor have?

A: The Ryzen 3 5305G has 8 MB of L3 cache. The Ryzen Embedded 9900X3D has 128 MB of L3 cache.

Q: What memory types do the two processors support?

A: The Ryzen 3 5305G supports DDR4 memory with 51.2 GB/s bandwidth. The Ryzen Embedded 9900X3D supports DDR5 memory with 89.6 GB/s bandwidth.

Q: Does the Ryzen Embedded 9900X3D support ECC memory?

A: Yes, ECC memory support is listed for the Ryzen Embedded 9900X3D. The Ryzen 3 5305G does not list ECC memory support.

Q: What are the boost clock speeds?

A: The Ryzen 3 5305G boosts to 4.20 GHz. The Ryzen Embedded 9900X3D boosts to 5.50 GHz.

Q: Which processor has a lower TDP?

A: The Ryzen 3 5305G has a 65 TDP. The Ryzen Embedded 9900X3D has a 120 TDP.

Specification Differences

| Specification | AMD Ryzen 3 5305G | AMD Ryzen Embedded 9900X3D |

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

| Series | 5000 series | 9000 series |

| Cores | 4 | 12 |

| Threads | 8 | 24 |

| Base Clock | 4.00 GHz | 4.40 GHz |

| Boost Clock | 4.20 GHz | 5.50 GHz |

| TDP | 65 | 120 |

| Socket | AMD Socket AM4 | AMD Socket AM5 |

| Codename | Cezanne | Granite Ridge |

| Generation | Ryzen 3 (Zen 3 (Cezanne)) | Ryzen Embedded (Zen 5 (Granite Ridge)) |

| Process Node | 7 nm (TSMC) | 4 nm (TSMC) |

| Transistors | 10,700 million | 16,630 million |

| Die Size | 180 mm² | 2x 70.6 mm² |

| L1 Cache | 64 KB (per core) | 80 KB (per core) |

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

| L3 Cache | 8 MB | 128 MB |

| Memory Support | DDR4 | DDR5 |

| Memory Bandwidth | 51.2 GB/s | 89.6 GB/s |

| ECC Memory | No | Yes |

| PCIe | Gen 3, 16 Lanes (CPU only) | Gen 5, 24 Lanes (CPU only) |

| Integrated Graphics | Radeon Vega 6 | Radeon Graphics |

| Release Date | 2025-02-23 | 2025-10-06 |

| Part Number | 100-000001802 | 100-000001368E |

| Multiplier Unlocked | Yes | Yes |