NVIDIA RTX 4000 SFF Ada Generation vs NVIDIA Rubin GPU Comparison

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark comparisons between the NVIDIA RTX 4000 SFF Ada Generation and the NVIDIA Rubin GPU. The RTX 4000 SFF Ada Generation has two recorded benchmark scores: 124,812 in Geekbench OpenCL and 109,364 in Geekbench Vulkan. Its average benchmark score is 117,088, placing it in the 95th percentile of all GPUs tracked. The Rubin GPU has no recorded benchmark scores, an average benchmark score of 0, and sits in the 50th percentile by default due to missing data.

The nearest rivals for the RTX 4000 SFF Ada Generation provide context for its measured performance. The NVIDIA GB10 scores 117,393 on average, a 0.3% difference from the RTX 4000 SFF. The AMD Radeon PRO W7700 scores 118,976, placing it 1.6% ahead. The NVIDIA Tesla V100 SXM2 16 GB scores 114,395, which is 2.4% behind the RTX 4000 SFF. The NVIDIA RTX A5500 Mobile scores 113,944, trailing by 2.8%. These deltas show the RTX 4000 SFF holds a narrow band of performance around its closest competitors, with no rival exceeding a 1.6% lead.

Since the Rubin GPU lacks any benchmark entries, no quantitative comparison of its compute performance against the RTX 4000 SFF is possible from the recorded data. The Rubin GPU's theoretical specifications, such as 130.0 TFLOPS of FP32 throughput, stand in stark contrast to the RTX 4000 SFF's 19.17 TFLOPS, but these are not measured results. The database records no wins for either product in head-to-head testing, as no such tests exist.

Where Each One Wins

The RTX 4000 SFF Ada Generation wins in any scenario requiring measured, verifiable performance. Its Geekbench OpenCL score of 124,812 and Vulkan score of 109,364 represent the only empirical data available for either product. This card delivers 19.17 TFLOPS of FP32 performance and 19.17 TFLOPS of FP16 performance in a 1:1 ratio. It also provides 99.84 GPixel/s of pixel fill rate and 299.5 GTexel/s of texture fill rate. These figures support workstation workloads where rasterization and compute are balanced.

The RTX 4000 SFF also wins decisively in physical adaptability. Its 70 W power draw, dual-slot width, and 168 mm length (6.6 inches) allow installation in space-constrained systems. The card requires no external power connectors and suggests a 250 W power supply. Its 4x mini-DisplayPort 1.4a outputs support multi-monitor workstation setups. The 20 GB GDDR6 memory on a 160-bit bus delivers 280.0 GB/s of bandwidth, sufficient for large datasets in professional applications.

The Rubin GPU wins in raw architectural potential. It offers 130.0 TFLOPS of FP32 and 260.0 TFLOPS of FP16 in a 2:1 ratio. Its 288 GB HBM4 memory on a 16384-bit bus provides 22.1 TB/s of bandwidth, a 79x advantage over the RTX 4000 SFF's 280.0 GB/s. The 896 tensor cores and 28672 shading units dwarf the RTX 4000 SFF's 192 tensor cores and 6144 shading units. However, without benchmark scores, these wins remain theoretical rather than demonstrated.

The Rubin GPU also wins in memory capacity and interface modernity. It uses PCIe 6.0 x16, while the RTX 4000 SFF uses PCIe 4.0 x16. The SXM Module form factor and 2300 W power draw indicate a data center-oriented design, with a suggested 2700 W power supply. No display outputs exist on the Rubin GPU, confirming its server-class positioning.

Architecture Differences

The two GPUs come from entirely different architectural lineages. The RTX 4000 SFF Ada Generation uses the AD104 chip built on the Ada Lovelace architecture, fabricated by TSMC on a 5 nm process. It contains 35,800 million transistors on a 294 mm² die, yielding a transistor density of 121.8 million per mm². The Rubin GPU uses the GR100 chip on the Rubin architecture, also fabricated by TSMC but on a 3 nm process. It packs 336,000 million transistors on a 1456 mm² die, achieving 230.8 million transistors per mm². The Rubin GPU's transistor count is nearly 9.4 times higher, and its density is 1.9 times greater.

The compute configurations differ substantially. The RTX 4000 SFF has 6144 shading units, 192 texture mapping units, and 64 raster operation units. It includes 48 ray tracing cores and 192 tensor cores. The Rubin GPU has 28672 shading units, 896 texture mapping units, and only 24 raster operation units. It includes 896 tensor cores, but its ray tracing core count is not recorded in the database. The RTX 4000 SFF's higher ROP count (64 vs 24) gives it a pixel rate of 99.84 GPixel/s, exceeding the Rubin GPU's 54.41 GPixel/s despite the Rubin's massive shader and texture advantage.

Memory architecture is radically different. The RTX 4000 SFF uses 20 GB of GDDR6 on a 160-bit interface at 1750 MHz (14 Gbps effective), producing 280.0 GB/s. The Rubin GPU uses 288 GB of HBM4 on a 16384-bit interface at 2695 MHz (10.8 Gbps effective), producing 22.1 TB/s. The bus width difference is 102.4x, and the bandwidth difference is 78.9x.

Clock behavior also diverges. The RTX 4000 SFF runs at a 720 MHz base and 1560 MHz boost. The Rubin GPU runs at a 700 MHz base and 2267 MHz boost. The Rubin's boost clock is 45.3% higher, though its base clock is slightly lower. Power envelopes are extreme: 70 W for the RTX 4000 SFF versus 2300 W for the Rubin GPU. The RTX 4000 SFF supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The Rubin GPU lists N/A for all graphics APIs, reinforcing its compute-only server role.

FAQ

Q: Which GPU has higher measured benchmark performance?

A: Only the RTX 4000 SFF Ada Generation has recorded benchmark scores. Its Geekbench OpenCL score is 124,812 and its Geekbench Vulkan score is 109,364. The Rubin GPU has no benchmark entries in the database.

Q: How does the RTX 4000 SFF compare to its nearest rivals?

A: The RTX 4000 SFF scores 0.3% below the NVIDIA GB10, 1.6% below the AMD Radeon PRO W7700, 2.4% above the NVIDIA Tesla V100 SXM2 16 GB, and 2.8% above the NVIDIA RTX A5500 Mobile.

Q: What is the memory capacity difference?

A: The RTX 4000 SFF has 20 GB of GDDR6 memory. The Rubin GPU has 288 GB of HBM4 memory, which is 14.4 times greater.

Q: Which GPU has higher FP32 compute?

A: The Rubin GPU lists 130.0 TFLOPS of FP32 performance. The RTX 4000 SFF lists 19.17 TFLOPS. The Rubin GPU's figure is 6.8 times higher, though it is not confirmed by measured benchmarks.

Q: What are the power requirements?

A: The RTX 4000 SFF draws 70 W and suggests a 250 W power supply. The Rubin GPU draws 2300 W and suggests a 2700 W power supply.

Q: Can either GPU be used for display output?

A: The RTX 4000 SFF provides 4x mini-DisplayPort 1.4a outputs. The Rubin GPU has no display outputs.

The Verdict

The data presents a clear split between a verified workstation product and an unverified server product. The RTX 4000 SFF Ada Generation is a complete, measurable product. It holds a 95th percentile rank among all GPUs, delivers 19.17 TFLOPS of FP32, and fits into a 70 W dual-slot package. Its nearest rivals cluster within a 5.6% performance band, showing that it competes effectively with the NVIDIA GB10, AMD Radeon PRO W7700, NVIDIA Tesla V100 SXM2 16 GB, and NVIDIA RTX A5500 Mobile. For any user requiring confirmed performance data, a compact physical footprint, and display outputs, the RTX 4000 SFF is the only choice with empirical support.

The Rubin GPU is a specification sheet without measured results. Its 130.0 TFLOPS FP32, 288 GB HBM4, and 22.1 TB/s bandwidth are impressive on paper, but the database records zero benchmark scores for it. Its 2300 W power draw, SXM Module form factor, and lack of display outputs restrict it to data center installations. The 50th percentile rank reflects missing data, not demonstrated capability.

Users who need a workstation GPU with known performance, low power draw, and multi-monitor support should select the RTX 4000 SFF Ada Generation. Users who require massive memory capacity, extreme compute density, and the latest PCIe 6.0 interface for server deployments may consider the Rubin GPU, but they must accept that its performance claims remain unverified in the database. The absence of any head-to-head benchmarks means no direct comparison can be made between the two products' real-world behavior.

Specification Differences

| Specification | RTX 4000 SFF Ada Generation | Rubin GPU |

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

| Architecture | Ada Lovelace | Rubin |

| Chip | AD104 | GR100 |

| Process Node | 5 nm | 3 nm |

| Transistors | 35,800 million | 336,000 million |

| Die Size | 294 mm² | 1456 mm² |

| Transistor Density | 121.8M / mm² | 230.8M / mm² |

| Base Clock | 720 MHz | 700 MHz |

| Boost Clock | 1560 MHz | 2267 MHz |

| Memory Size | 20 GB | 288 GB |

| Memory Type | GDDR6 | HBM4 |

| Memory Bus Width | 160 bit | 16384 bit |

| Memory Bandwidth | 280.0 GB/s | 22.1 TB/s |

| Shading Units | 6144 | 28672 |

| TMUs | 192 | 896 |

| ROPs | 64 | 24 |

| Tensor Cores | 192 | 896 |

| Ray Tracing Cores | 48 | Not recorded |

| Pixel Rate | 99.84 GPixel/s | 54.41 GPixel/s |

| Texture Rate | 299.5 GTexel/s | 2,031.2 GTexel/s |

| FP32 | 19.17 TFLOPS | 130.0 TFLOPS |

| FP16 | 19.17 TFLOPS (1:1) | 260.0 TFLOPS (2:1) |

| TDP | 70 W | 2300 W |

| Slot Width | Dual-slot | SXM Module |

| Power Connectors | None | Not recorded |

| Suggested PSU | 250 W | 2700 W |

| Bus Interface | PCIe 4.0 x16 | PCIe 6.0 x16 |

| Display Outputs | 4x mini-DisplayPort 1.4a | No outputs |

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

| OpenGL | 4.6 | N/A |

| Vulkan | 1.4 | N/A |

| Length | 168 mm (6.6 inches) | Not recorded |

| Height | 69 mm (2.7 inches) | Not recorded |

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

| Predecessor | Workstation Ampere | Server Blackwell |

| Successor | Blackwell PRO W | Not recorded |