NVIDIA RTX 3000 Mobile Ada Generation vs NVIDIA Rubin GPU Comparison

The Verdict

The data presents two NVIDIA GPUs built for entirely different purposes. The RTX 3000 Mobile Ada Generation is a 2023 mobile workstation part, while the Rubin GPU is a 2025 server accelerator. Their recorded specifications show no overlap in target environment, power class, memory subsystem, or API support. The RTX 3000 Mobile targets portable devices with a 115 W TDP and integrated graphics package, while the Rubin GPU is an SXM module with a 2300 W TDP and a suggested 2700 W power supply. Neither part holds a benchmark advantage in the recorded data, as both have zero benchmark scores and a 50th percentile ranking against all GPUs. For a user needing a PCIe 4.0 x16 mobile part with DirectX 12 Ultimate support, the RTX 3000 Mobile is the only viable option. For a user needing a PCIe 6.0 x16 server accelerator with no display outputs and HBM4 memory, the Rubin GPU is the clear choice. The database shows no overlap in their intended roles, so the selection depends entirely on the form factor and workload environment, not on performance comparison.

Where Each One Wins

The RTX 3000 Mobile Ada Generation wins in every category tied to client-side graphics and portable computing. It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, while the Rubin GPU lists N/A for all three APIs. The RTX 3000 Mobile also has display outputs (portable device dependent), whereas the Rubin GPU has no outputs. The mobile part uses GDDR6 memory with a 128-bit bus and 256.0 GB/s bandwidth, which suits its 8 GB capacity. Its pixel rate of 81.36 GPixel/s exceeds the Rubin GPU's 54.41 GPixel/s, and its base clock of 1395 MHz is higher than the Rubin GPU's 700 MHz. The RTX 3000 Mobile also has a higher boost clock ratio relative to its base, reaching 1695 MHz.

The Rubin GPU wins in raw compute and memory scale. It delivers 130.0 TFLOPS FP32 and 260.0 TFLOPS FP16, compared to 15.62 TFLOPS for both FP32 and FP16 on the RTX 3000 Mobile. Its 288 GB HBM4 memory on a 16384-bit bus provides 22.1 TB/s bandwidth, over 86 times the mobile part's bandwidth. The Rubin GPU has 28672 shading units, 896 tensor cores, and 896 TMUs, dwarfing the mobile part's 4608 shading units, 144 tensor cores, and 144 TMUs. Its texture rate of 2,031.2 GTexel/s far exceeds the mobile part's 244.1 GTexel/s. The Rubin GPU also uses a 3 nm process with 336,000 million transistors, while the mobile part uses a 5 nm process with 22,900 million transistors.

Architecture Differences

The two GPUs come from different architectural generations and process nodes. The RTX 3000 Mobile uses the AD106 chip on Ada Lovelace architecture, fabricated by TSMC on a 5 nm process. The Rubin GPU uses the GR100 chip on Rubin architecture, also fabricated by TSMC but on a 3 nm process. Transistor density tells a clear story: the Rubin GPU packs 230.8M transistors per mm², while the RTX 3000 Mobile has 121.8M per mm². The die sizes reflect their different purposes: the Rubin GPU measures 1456 mm², while the RTX 3000 Mobile measures 188 mm².

The RTX 3000 Mobile has 36 ray tracing cores, while the Rubin GPU's ray tracing core count is not recorded. The mobile part has 48 ROPs, while the Rubin GPU has only 24 ROPs. The Rubin GPU's tensor core count of 896 is over 6 times the mobile part's 144. The memory types diverge completely: GDDR6 versus HBM4. The bus interfaces also differ, with PCIe 4.0 x16 on the mobile part and PCIe 6.0 x16 on the Rubin GPU. The power delivery differs fundamentally: the RTX 3000 Mobile uses no external power connectors and is an IGP package, while the Rubin GPU is an SXM module with a suggested 2700 W power supply. The RTX 3000 Mobile's FP16 output is 1:1 with FP32, while the Rubin GPU's FP16 output is 2:1, doubling its FP32 rate.

FAQ

Q: Which GPU has more memory bandwidth?

A: The Rubin GPU has 22.1 TB/s bandwidth from HBM4 memory on a 16384-bit bus. The RTX 3000 Mobile has 256.0 GB/s from GDDR6 on a 128-bit bus.

Q: Does either GPU support DirectX 12 Ultimate?

A: Only the RTX 3000 Mobile Ada Generation supports DirectX 12 Ultimate (12_2). The Rubin GPU lists N/A for DirectX, OpenGL, and Vulkan.

Q: What are the TDP values?

A: The RTX 3000 Mobile has a 115 W TDP with no external power connectors. The Rubin GPU has a 2300 W TDP and requires a suggested 2700 W power supply.

Q: Which GPU has more shading units?

A: The Rubin GPU has 28672 shading units. The RTX 3000 Mobile has 4608 shading units.

Q: What is the release date for each?

A: The RTX 3000 Mobile was released on March 20, 2023. The Rubin GPU has a release date of December 31, 2025.

Q: Do both GPUs have display outputs?

A: No. The RTX 3000 Mobile has display outputs described as portable device dependent. The Rubin GPU has no outputs.

Head-to-Head Benchmarks

The recorded database contains no head-to-head benchmark results, no wins for either part, and no nearest rival comparisons. Both GPUs have an average benchmark score of 0 and a 50th percentile ranking against all GPUs. This absence of measured performance data means the comparison relies entirely on specification fields.

The largest numerical gap appears in memory bandwidth. The Rubin GPU's 22.1 TB/s is approximately 86.3 times the RTX 3000 Mobile's 256.0 GB/s. The FP32 compute gap is similarly large: the Rubin GPU's 130.0 TFLOPS is 8.32 times the mobile part's 15.62 TFLOPS. In FP16, the Rubin GPU's 260.0 TFLOPS is 16.65 times the mobile part's 15.62 TFLOPS, because the Rubin GPU doubles its rate while the mobile part maintains a 1:1 ratio.

The transistor count difference is also substantial. The Rubin GPU has 336,000 million transistors, which is 14.67 times the RTX 3000 Mobile's 22,900 million. The die size difference is 7.74 times, with the Rubin GPU at 1456 mm² versus 188 mm². The memory capacity difference is 36 times, with 288 GB versus 8 GB. The bus width difference is 128 times, with 16384 bit versus 128 bit.

The RTX 3000 Mobile wins in pixel rate with 81.36 GPixel/s versus 54.41 GPixel/s, a 49.5% advantage. Its base clock of 1395 MHz is exactly double the Rubin GPU's 700 MHz, though the Rubin GPU's boost clock of 2267 MHz is 33.7% higher than the mobile part's 1695 MHz. The mobile part also has double the ROP count, 48 versus 24, which contributes to its pixel rate advantage.

Texture rate favors the Rubin GPU overwhelmingly. Its 2,031.2 GTexel/s is 8.32 times the mobile part's 244.1 GTexel/s, matching the FP32 ratio because texture rate scales with shading units and clock. The shading unit ratio is 6.22 times, while the TMU ratio is 6.22 times as well. The tensor core ratio is 6.22 times, with 896 versus 144.

Specification Differences

The two GPUs differ in nearly every recorded specification field. The table below shows only the fields where they differ:

| Field | RTX 3000 Mobile Ada | Rubin GPU |

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

| Chip | AD106 | GR100 |

| Architecture | Ada Lovelace | Rubin |

| Generation | Ada-MW | Server Rubin (Rxx) |

| Process node | 5 nm | 3 nm |

| Transistors | 22,900 million | 336,000 million |

| Die size | 188 mm² | 1456 mm² |

| Transistor density | 121.8M / mm² | 230.8M / mm² |

| Base clock | 1395 MHz | 700 MHz |

| Boost clock | 1695 MHz | 2267 MHz |

| Memory clock | 2000 MHz, 16 Gbps effective | 2695 MHz, 10.8 Gbps effective |

| Memory size | 8 GB | 288 GB |

| Memory type | GDDR6 | HBM4 |

| Memory bus width | 128 bit | 16384 bit |

| Memory bandwidth | 256.0 GB/s | 22.1 TB/s |

| Shading units | 4608 | 28672 |

| TMUs | 144 | 896 |

| ROPs | 48 | 24 |

| RT cores | 36 | Not recorded |

| Tensor cores | 144 | 896 |

| Pixel rate | 81.36 GPixel/s | 54.41 GPixel/s |

| Texture rate | 244.1 GTexel/s | 2,031.2 GTexel/s |

| FP32 | 15.62 TFLOPS | 130.0 TFLOPS |

| FP16 | 15.62 TFLOPS (1:1) | 260.0 TFLOPS (2:1) |

| TDP | 115 W | 2300 W |

| Slot width | IGP | SXM Module |

| Power connectors | None | Not recorded |

| Suggested PSU | Not recorded | 2700 W |

| Bus interface | PCIe 4.0 x16 | PCIe 6.0 x16 |

| Display outputs | Portable Device Dependent | No outputs |

| DirectX | 12 Ultimate (12_2) | N/A |

| OpenGL | 4.6 | N/A |

| Vulkan | 1.4 | N/A |

| Release date | 2023-03-20 | 2025-12-31 |

| Predecessor | Ampere-MW | Server Blackwell |

| Successor | Blackwell-MW | Not recorded |

The only fields shared between the two are manufacturer (NVIDIA), foundry (TSMC), production status (Active), and the absence of a launch MSRP. The RTX 3000 Mobile has no recorded dimensions, and the Rubin GPU also lacks length, height, and width data. Both parts have no game clock, no codename, and no benchmark scores. The RTX 3000 Mobile's series is GeForce 30-series, while the Rubin GPU has no series designation.