NVIDIA A100 SXM4 80 GB vs NVIDIA RTX PRO 5000 Blackwell Comparison

The NVIDIA A100 SXM4 80 GB and the NVIDIA RTX PRO 5000 Blackwell represent two distinct design philosophies from the same manufacturer, targeting different segments of the professional computing market. The data shows a clear split in their intended roles, with the A100 serving as a compute-focused server accelerator and the RTX PRO 5000 functioning as a workstation graphics card with broader feature support. This analysis walks through the benchmark data, architectural differences, and practical implications of choosing between them based solely on the provided facts.

Where Each One Wins

The benchmark results indicate a decisive victory for the RTX PRO 5000 Blackwell in the single shared test. In the Geekbench Vulkan benchmark, the RTX PRO 5000 scores 282,631, while the A100 SXM4 80 GB manages 183,725. This represents a 35% deficit for the A100, making the RTX PRO 5000 the clear winner in this specific graphics-oriented workload. The Vulkan test measures graphics and compute performance through a modern API, and the RTX PRO 5000's substantial lead suggests it is better suited for tasks that leverage graphics pipelines alongside general compute.

However, the A100 SXM4 80 GB holds its own in the broader benchmark landscape. Its average benchmark score of 183,725 places it at the 98th percentile of all GPUs, identical to the RTX PRO 5000's percentile ranking. The A100's nearest rival is the NVIDIA RTX 5000 Ada Generation, which scores 184,664, a mere 0.5% difference. This indicates the A100 is competitive within its own generation, but the RTX PRO 5000's Vulkan score shows a different performance envelope. The RTX PRO 5000 also has additional benchmark entries—3DMark Steel Nomad DX12 at 9,579.5 and Geekbench OpenCL at 254,116—which the A100 lacks entirely, meaning the RTX PRO 5000 has been validated across a wider range of test scenarios.

The wins are asymmetric by design. The A100 wins in no head-to-head benchmarks, while the RTX PRO 5000 wins the only available comparison. This does not mean the A100 is inferior across the board; rather, the data available only covers Vulkan performance, where the RTX PRO 5000's newer architecture and graphics-focused design give it a decisive edge. For workloads that rely on raw FP32 compute or memory bandwidth, the A100's specifications suggest strengths that the current benchmark data does not directly capture.

Architecture Differences

The two cards are built on fundamentally different architectures and process nodes. The A100 SXM4 80 GB uses the GA100 chip based on Ampere architecture, fabricated on a 7 nm process at TSMC. It contains 54,200 million transistors on a die size of 826 mm², yielding a transistor density of 65.6 million per square millimeter. In contrast, the RTX PRO 5000 Blackwell uses the GB202 chip based on Blackwell 2.0 architecture, fabricated on a 5 nm process at TSMC. This newer chip packs 92,200 million transistors into a smaller 750 mm² die, achieving a substantially higher density of 122.9 million transistors per square millimeter.

These architectural differences translate into significant compute capability gaps. The RTX PRO 5000 has 14,080 shading units and 440 tensor cores, while the A100 has 6,912 shading units and 432 tensor cores. The RTX PRO 5000 also includes 110 ray tracing cores, a feature entirely absent from the A100. The FP32 throughput reflects this disparity: the RTX PRO 5000 delivers 66.94 TFLOPS versus the A100's 19.49 TFLOPS, a 3.4x advantage. Interestingly, the RTX PRO 5000's FP16 performance is identical to its FP32 at 66.94 TFLOPS (1:1 ratio), while the A100's FP16 is 77.97 TFLOPS (4:1 ratio), meaning the A100 actually exceeds the RTX PRO 5000 in half-precision throughput.

Memory configurations diverge sharply. The A100 uses 80 GB of HBM2e memory across a 5120-bit bus, providing 2.04 TB/s of bandwidth. The RTX PRO 5000 uses 48 GB of GDDR7 memory on a 384-bit bus, offering 1.34 TB/s. The A100's memory bandwidth is 52% higher, which is critical for large-scale data movement in compute workloads. The bus width difference—5120 bits versus 384 bits—explains this bandwidth advantage despite the A100's older memory type.

The cards also differ in power and physical design. The A100 is an OAM module with a 400 W TDP and no power connectors, while the RTX PRO 5000 is a dual-slot card with a 300 W TDP and a single 16-pin connector. The RTX PRO 5000 has display outputs (4x DisplayPort 2.1b), while the A100 has none. The RTX PRO 5000 also supports PCIe 5.0 x16, double the bandwidth of the A100's PCIe 4.0 x16 interface.

Head-to-Head Benchmarks

The only direct head-to-head benchmark available is Geekbench Vulkan, and it shows a stark performance gap. The RTX PRO 5000 Blackwell scores 282,631, while the A100 SXM4 80 GB scores 183,725. The delta percentage is 35% in favor of the RTX PRO 5000, meaning the A100 performs 35% worse in this test. This is a substantial margin that indicates the RTX PRO 5000's architecture is significantly better optimized for Vulkan workloads, likely due to its graphics-oriented design with dedicated ray tracing cores and the newer Blackwell architecture.

Looking at the nearest rival data provides additional context. The A100's closest competitor in the database is the RTX 5000 Ada Generation, which scores 184,664—just 0.5% higher than the A100. This places the A100 within a narrow performance band for Vulkan among its peers. The RTX PRO 5000's nearest rival list includes the A100 at -0.9% delta, meaning the A100's average score is 0.9% lower than the RTX PRO 5000's. However, this average includes the RTX PRO 5000's additional OpenCL and 3DMark scores, which likely pull its average up. The Geekbench Vulkan score alone shows a much larger gap.

The RTX PRO 5000's other benchmark results—3DMark Steel Nomad DX12 at 9,579.5 and Geekbench OpenCL at 254,116—demonstrate its strength in both modern DX12 gaming-style workloads and general compute. The OpenCL score of 254,116 is notably higher than the Vulkan score of 282,631 might suggest, indicating strong compute performance under diverse APIs. The A100 has no comparable results in the dataset, so direct comparisons in these tests are impossible. The data suggests the RTX PRO 5000 is a more versatile card across different benchmark types, while the A100's single score limits its demonstrated performance profile.

The Verdict

The data points to a clear conclusion: the RTX PRO 5000 Blackwell is the superior choice for graphics-oriented and general-purpose workstation tasks. Its 35% lead in Vulkan, combined with its additional benchmark wins in OpenCL and DX12, shows a more capable and flexible GPU for professional visualization, rendering, and compute workloads that leverage modern APIs. The RTX PRO 5000 also has the advantage of being an active product with display outputs, making it a viable drop-in solution for desktop workstations.

The A100 SXM4 80 GB remains relevant for specific compute scenarios. Its 80 GB of HBM2e memory with 2.04 TB/s bandwidth far exceeds the RTX PRO 5000's 48 GB GDDR7 at 1.34 TB/s, making it better suited for extremely large models or datasets that require massive memory capacity. The A100's FP16 performance of 77.97 TFLOPS also exceeds the RTX PRO 5000's 66.94 TFLOPS, suggesting an edge in half-precision training workloads. However, the A100's end-of-life status and lack of display outputs limit its appeal to server environments where graphics output is unnecessary.

Users should choose the RTX PRO 5000 if they need a current-generation workstation card with ray tracing, display connectivity, and superior Vulkan and OpenCL performance. The A100 is the pick for those who prioritize memory capacity and bandwidth above all else, particularly in server deployments where the OAM form factor and 400 W TDP are acceptable. The RTX PRO 5000's lower 300 W TDP and active production status make it a more practical choice for most professional users, while the A100's niche is in high-memory compute clusters.

FAQ

Q: Which card has higher Vulkan performance?

A: The NVIDIA RTX PRO 5000 Blackwell scores 282,631 in Geekbench Vulkan, which is 35% higher than the A100 SXM4 80 GB's score of 183,725.

Q: What is the memory capacity difference?

A: The A100 SXM4 80 GB has 80 GB of HBM2e memory, while the RTX PRO 5000 Blackwell has 48 GB of GDDR7 memory. The A100 also offers higher bandwidth at 2.04 TB/s versus 1.34 TB/s.

Q: Does the A100 support display outputs?

A: No. The A100 SXM4 80 GB has no display outputs, while the RTX PRO 5000 Blackwell features 4x DisplayPort 2.1b connections.

Q: How do their transistor counts compare?

A: The RTX PRO 5000 Blackwell has 92,200 million transistors on a 750 mm² die, while the A100 SXM4 80 GB has 54,200 million transistors on a larger 826 mm² die.

Q: Which card has higher FP32 compute performance?

A: The RTX PRO 5000 Blackwell delivers 66.94 TFLOPS of FP32 performance, significantly exceeding the A100 SXM4 80 GB's 19.49 TFLOPS.

Q: What is the TDP of each card?

A: The A100 SXM4 80 GB has a 400 W TDP as an OAM module, while the RTX PRO 5000 Blackwell has a 300 W TDP in a dual-slot form factor.

Specification Differences

| Specification | NVIDIA A100 SXM4 80 GB | NVIDIA RTX PRO 5000 Blackwell |

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

| Chip | GA100 | GB202 |

| Architecture | Ampere | Blackwell 2.0 |

| Process Node | 7 nm | 5 nm |

| Transistors | 54,200 million | 92,200 million |

| Die Size | 826 mm² | 750 mm² |

| Base Clock | 1275 MHz | 1740 MHz |

| Boost Clock | 1410 MHz | 2377 MHz |

| Memory Size | 80 GB | 48 GB |

| Memory Type | HBM2e | GDDR7 |

| Memory Bus | 5120 bit | 384 bit |

| Memory Bandwidth | 2.04 TB/s | 1.34 TB/s |

| Shading Units | 6912 | 14080 |

| TMUs | 432 | 440 |

| ROPs | 160 | 160 |

| RT Cores | None | 110 |

| Tensor Cores | 432 | 440 |

| FP32 Performance | 19.49 TFLOPS | 66.94 TFLOPS |

| FP16 Performance | 77.97 TFLOPS (4:1) | 66.94 TFLOPS (1:1) |

| TDP | 400 W | 300 W |

| Slot Width | OAM Module | Dual-slot |

| Power Connectors | None | 1x 16-pin |

| Suggested PSU | 800 W | 700 W |

| Bus Interface | PCIe 4.0 x16 | PCIe 5.0 x16 |

| Display Outputs | No outputs | 4x DisplayPort 2.1b |

| Production Status | End-of-life | Active |

| Release Date | 2020-11-15 | 2025-03-17 |