NVIDIA RTX A1000 vs NVIDIA RTX PRO 4500 Blackwell Comparison

NVIDIA's workstation GPU lineup spans a vast performance gulf, and the comparison between the RTX A1000 and the RTX PRO 4500 Blackwell illustrates this perfectly. The A1000 is an entry-level Ampere card designed for basic CAD and professional visualization, while the PRO 4500 is a high-end Blackwell part aimed at demanding AI, rendering, and simulation workloads. Benchmark data confirms they are in completely different performance classes, with the PRO 4500 delivering massive multi-generational leaps in raw throughput.

Head-to-Head Benchmarks

The performance disparity between the NVIDIA RTX A1000 and the NVIDIA RTX PRO 4500 Blackwell is stark, as evidenced by the two shared benchmark results. In the 3dmark_3dmark_steel_nomad_dx12 test, which measures modern DirectX 12 gaming and ray-tracing workloads, the RTX PRO 4500 Blackwell scores 7025 points, while the RTX A1000 manages only 969 points. This represents a -86.2% delta, meaning the PRO 4500 delivers roughly 7.2 times the performance of the A1000 in this specific test. The gap is so wide that the A1000’s score appears as a rounding error next to the PRO 4500’s result.

The second shared test, geekbench_vulkan, tells a similar story. The RTX PRO 4500 Blackwell achieves a score of 221768, while the RTX A1000 trails significantly with 49574 points. This -77.6% delta indicates the PRO 4500 is approximately 4.5 times faster in Vulkan API workloads. This benchmark is particularly relevant for professional applications that leverage Vulkan for compute and rendering, showing the PRO 4500’s architectural superiority.

The RTX PRO 4500 Blackwell also holds an overwhelming advantage in average benchmark score. Its avgBenchmarkScore of 31532 places it well ahead of the A1000’s 34207 average, but this is misleading. The A1000’s average is inflated by its geekbench_opencl score of 52078, which is absent from the PRO 4500’s benchmark suite. Looking only at the shared tests, the PRO 4500 is clearly the dominant performer. Furthermore, the PRO 4500 has a percentileVsAllGpus of 76, while the A1000 sits at 79, indicating that while the A1000 ranks slightly higher among all GPUs due to its efficiency, the PRO 4500’s raw power in its specific tests is unmatched in this pairing.

Where Each One Wins

The RTX PRO 4500 Blackwell wins every head-to-head comparison, so its use case is clear: it is for professionals who need maximum compute throughput. Its 50.53 TFLOPS of FP32 performance versus the A1000’s 6.737 TFLOPS means it can handle complex simulations, AI training, and high-resolution rendering tasks with ease. Its 896.0 GB/s memory bandwidth, compared to the A1000’s 192.0 GB/s, allows it to feed its 10496 shading units and 328 tensor cores without bottlenecking, making it ideal for large dataset manipulation and real-time ray tracing.

The RTX A1000, while losing all direct comparisons, still has a role. Its 50 W TDP and single-slot design make it a low-power, space-saving option for workstations that require basic 3D acceleration or multi-GPU configurations in cramped chassis. It uses PCIe 4.0 x8, which is sufficient for its modest bandwidth needs, and its 8 GB of GDDR6 memory is adequate for light CAD, 2D design, and entry-level rendering. The A1000’s 79th percentile ranking among all GPUs suggests it is a competent performer for its class, but it is not meant for the heavy lifting the PRO 4500 handles effortlessly.

In practical terms, choose the RTX PRO 4500 Blackwell for GPU-accelerated rendering, scientific computing, and AI inference. Choose the RTX A1000 for office productivity, basic 3D modeling, and situations where power draw and physical space are at a premium. The A1000 is also a viable choice for adding display outputs to a system without needing an auxiliary power connector, while the PRO 4500’s 200 W TDP and 1x 16-pin power connector require a robust power supply.

Architecture Differences

The two GPUs are built on fundamentally different architectures and manufacturing processes. The RTX A1000 uses the Ampere architecture with the GA107 chip, fabricated on Samsung’s 8 nm process node. It packs 8,700 million transistors on a 200 mm² die, resulting in a transistor density of 43.5M / mm². The RTX PRO 4500 Blackwell, on the other hand, uses the Blackwell 2.0 architecture with the GB203 chip, built on TSMC’s 5 nm process. This allows it to pack 45,600 million transistors onto a 378 mm² die, achieving a density of 120.6M / mm² — nearly three times denser than the A1000.

Core counts reflect this generational leap. The PRO 4500 has 10496 shading units, 328 TMUs, and 112 ROPs, versus the A1000’s 2304 shading units, 72 TMUs, and 32 ROPs. Ray tracing capabilities are also vastly improved: the PRO 4500 has 82 RT cores and 328 tensor cores, while the A1000 has 18 RT cores and 72 tensor cores. This translates to the PRO 4500’s 269.6 GPixel/s pixel rate and 789.5 GTexel/s texture rate, dwarfing the A1000’s 46.78 GPixel/s and 105.3 GTexel/s.

Memory technology and configuration also differ significantly. The A1000 uses 8 GB of GDDR6 on a 128 bit bus, while the PRO 4500 uses 32 GB of GDDR7 on a 256 bit bus. This gives the PRO 4500 a 896.0 GB/s bandwidth versus the A1000’s 192.0 GB/s. Clock speeds are higher on the PRO 4500 as well, with a base of 1635 MHz and boost of 2407 MHz, compared to the A1000’s 727 MHz base and 1462 MHz boost. The PRO 4500 also supports PCIe 5.0 x16, while the A1000 is limited to PCIe 4.0 x8.

FAQ

Q: Which GPU is faster in the 3DMark Steel Nomad test?

A: The NVIDIA RTX PRO 4500 Blackwell scores 7025 points, which is -86.2% better than the RTX A1000’s 969 points, making it over 7 times faster.

Q: What are the memory capacities of each card?

A: The RTX A1000 has 8 GB of GDDR6 memory, while the RTX PRO 4500 Blackwell has 32 GB of GDDR7 memory.

Q: How do their power requirements differ?

A: The RTX A1000 has a TDP of 50 W and requires no power connector, while the RTX PRO 4500 Blackwell has a 200 W TDP and requires a 1x 16-pin power connector.

Q: Which GPU has more RT cores?

A: The RTX PRO 4500 Blackwell has 82 RT cores, compared to 18 RT cores on the RTX A1000.

Q: What is the transistor density difference?

A: The RTX PRO 4500 Blackwell has a density of 120.6M / mm² on a 5 nm process, while the RTX A1000 has 43.5M / mm² on an 8 nm process.

Q: Are their display outputs the same?

A: No. The RTX A1000 uses 4x mini-DisplayPort 1.4a, while the RTX PRO 4500 Blackwell uses 4x DisplayPort 2.1b.

Specification Differences

| Specification | NVIDIA RTX A1000 | NVIDIA RTX PRO 4500 Blackwell |

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

| Architecture | Ampere | Blackwell 2.0 |

| Process Node | 8 nm | 5 nm |

| Foundry | Samsung | TSMC |

| Transistors | 8,700 million | 45,600 million |

| Die Size | 200 mm² | 378 mm² |

| Transistor Density | 43.5M / mm² | 120.6M / mm² |

| Base Clock | 727 MHz | 1635 MHz |

| Boost Clock | 1462 MHz | 2407 MHz |

| Memory Size | 8 GB | 32 GB |

| Memory Type | GDDR6 | GDDR7 |

| Memory Bus Width | 128 bit | 256 bit |

| Memory Bandwidth | 192.0 GB/s | 896.0 GB/s |

| Shading Units | 2304 | 10496 |

| TMUs | 72 | 328 |

| ROPs | 32 | 112 |

| RT Cores | 18 | 82 |

| Tensor Cores | 72 | 328 |

| Pixel Rate | 46.78 GPixel/s | 269.6 GPixel/s |

| Texture Rate | 105.3 GTexel/s | 789.5 GTexel/s |

| FP32 Performance | 6.737 TFLOPS | 50.53 TFLOPS |

| FP16 Performance | 6.737 TFLOPS (1:1) | 50.53 TFLOPS (1:1) |

| TDP | 50 W | 200 W |

| Slot Width | Single-slot | Dual-slot |

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

| Suggested PSU | 250 W | 550 W |

| Bus Interface | PCIe 4.0 x8 | PCIe 5.0 x16 |

| Display Outputs | 4x mini-DisplayPort 1.4a | 4x DisplayPort 2.1b |

| Dimensions (L x H) | 163 mm x 69 mm | 267 mm x 111 mm x 40 mm |

| Release Date | 2024-04-15 | 2025-03-17 |