NVIDIA RTX PRO 4500 Blackwell vs NVIDIA Rubin GPU Comparison

Head-to-Head Benchmarks

The recorded data presents an unusual comparison. The NVIDIA RTX PRO 4500 Blackwell has a full set of benchmark scores across nine tests, while the NVIDIA Rubin GPU has no recorded benchmark entries. The database shows the RTX PRO 4500 Blackwell achieving an average benchmark score of 31,532, placing it in the 76th percentile of all GPUs. The Rubin GPU holds a 50th percentile position with an average score of 0, reflecting the absence of test data.

In the 3DMark Steel Nomad DX12 test, the RTX PRO 4500 Blackwell scores 7,025. The Geekbench Vulkan result reaches 221,768 points. The Passmark suite shows a range of results: G3D scores 33,360, GPU Compute scores 19,255, G2D scores 1,336, DirectX 9 scores 397, DirectX 11 scores 320, DirectX 10 scores 204, and DirectX 12 scores 119.

Since the Rubin GPU has no benchmark scores, the head-to-head analysis must rely on the RTX PRO 4500 Blackwell's position relative to its nearest rivals. The database lists the NVIDIA TITAN RTX with an average score of 31,676, which is 0.5% above the RTX PRO 4500 Blackwell. The Intel Arc Pro A30M averages 31,894, 1.1% higher. The NVIDIA GRID M60-1Q and Quadro M5000 both score lower, with average scores of 31,220 and 31,206 respectively, each 1% behind the RTX PRO 4500 Blackwell.

The RTX PRO 4500 Blackwell delivers 50.53 TFLOPS of FP32 performance and matches that in FP16 at a 1:1 ratio. The Rubin GPU specification shows 130.0 TFLOPS FP32 and 260.0 TFLOPS FP16 with a 2:1 ratio, indicating substantially higher compute throughput on paper. However, no measured workloads confirm this advantage.

The texture rate for the RTX PRO 4500 Blackwell is 789.5 GTexel/s, while the Rubin GPU is rated at 2,031.2 GTexel/s. Pixel rates differ significantly as well: 269.6 GPixel/s for the RTX PRO 4500 Blackwell versus 54.41 GPixel/s for the Rubin GPU, a notable inversion driven by the Rubin GPU's 24 ROPs compared to 112 on the RTX PRO 4500 Blackwell.

Memory bandwidth favors the Rubin GPU decisively. The RTX PRO 4500 Blackwell provides 896.0 GB/s through a 256-bit bus with 32 GB of GDDR7. The Rubin GPU uses HBM4 across a 16,384-bit bus for 22.1 TB/s bandwidth and 288 GB capacity. These are the largest recorded differences between the two parts.

The Verdict

The data shows two GPUs with fundamentally different design targets. The RTX PRO 4500 Blackwell is a workstation card with active production status, a release date of March 17, 2025, and a full suite of measured benchmarks. It supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, with four DisplayPort 2.1b outputs. The Rubin GPU is a server module with no display outputs, no graphics API support, and a release date of December 31, 2025.

Professionals requiring validated graphics performance should look to the RTX PRO 4500 Blackwell. Its 76th percentile ranking and average score of 31,532 place it within 1.1% of its nearest rivals, with the TITAN RTX and Arc Pro A30M only slightly ahead. The benchmark data confirms a competitive workstation part.

The Rubin GPU targets server compute rather than graphics workloads. Its 3 nm process node, 336,000 million transistors, and 22.1 TB/s memory bandwidth indicate a high-throughput compute design. The absence of benchmark scores means the database cannot verify its graphics capabilities, and the lack of display outputs and graphics API support confirms it is not intended for rendering tasks.

The specification sheet alone shows the Rubin GPU with 28,672 shading units versus 10,496 on the RTX PRO 4500 Blackwell, and 896 tensor cores versus 328. The FP16 throughput of 260.0 TFLOPS on the Rubin GPU exceeds the RTX PRO 4500 Blackwell's 50.53 TFLOPS by a factor of five. For compute-heavy server workloads, the Rubin GPU is the clear choice based on specifications. For any task requiring graphics output or DirectX/Vulkan support, the RTX PRO 4500 Blackwell is the only viable option.

FAQ

Q: Which GPU has more shading units?

A: The NVIDIA Rubin GPU has 28,672 shading units, while the RTX PRO 4500 Blackwell has 10,496.

Q: What is the memory capacity of each GPU?

A: The RTX PRO 4500 Blackwell has 32 GB of GDDR7 memory, and the Rubin GPU has 288 GB of HBM4 memory.

Q: Does the Rubin GPU support DirectX or Vulkan?

A: No. The Rubin GPU has no graphics API support, with DirectX, OpenGL, and Vulkan all marked as N/A. The RTX PRO 4500 Blackwell supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4.

Q: How does the RTX PRO 4500 Blackwell compare to its nearest rival?

A: The RTX PRO 4500 Blackwell averages 31,532, which is 0.5% behind the NVIDIA TITAN RTX at 31,676 and 1.1% behind the Intel Arc Pro A30M at 31,894. It sits 1% ahead of both the GRID M60-1Q and Quadro M5000, which average 31,220 and 31,206.

Q: What are the process nodes for these GPUs?

A: The RTX PRO 4500 Blackwell uses a 5 nm process at TSMC, while the Rubin GPU uses a 3 nm process at the same foundry.

Q: Which GPU has a higher boost clock?

A: The RTX PRO 4500 Blackwell has a boost clock of 2407 MHz, compared to 2267 MHz for the Rubin GPU. The base clocks are 1635 MHz and 700 MHz respectively.

Specification Differences

The RTX PRO 4500 Blackwell uses the GB203 chip with a 5 nm process, 45,600 million transistors, and a 378 mm² die size. The Rubin GPU uses the GR100 chip on a 3 nm process with 336,000 million transistors and a 1456 mm² die. Transistor density measures 120.6M per mm² for the RTX PRO 4500 Blackwell and 230.8M per mm² for the Rubin GPU.

Clock speeds differ substantially. The RTX PRO 4500 Blackwell runs at 1635 MHz base and 2407 MHz boost, with memory at 1750 MHz (28 Gbps effective). The Rubin GPU runs at 700 MHz base and 2267 MHz boost, with memory at 2695 MHz (10.8 Gbps effective).

Memory configurations are far apart. The RTX PRO 4500 Blackwell has 32 GB GDDR7 on a 256-bit bus delivering 896.0 GB/s. The Rubin GPU has 288 GB HBM4 on a 16,384-bit bus delivering 22.1 TB/s.

Compute resources show the server part's scale. The RTX PRO 4500 Blackwell has 10,496 shading units, 328 TMUs, 112 ROPs, 82 RT cores, and 328 tensor cores. The Rubin GPU has 28,672 shading units, 896 TMUs, 24 ROPs, no listed RT cores, and 896 tensor cores.

Power and physical specifications differ completely. The RTX PRO 4500 Blackwell has a 200 W TDP, dual-slot width, a 16-pin power connector, and a 550 W suggested PSU. The Rubin GPU has a 2300 W TDP, SXM Module form factor, no power connectors listed, and a 2700 W suggested PSU.

The RTX PRO 4500 Blackwell uses PCIe 5.0 x16, has four DisplayPort 2.1b outputs, and measures 267 mm by 111 mm by 40 mm. The Rubin GPU uses PCIe 6.0 x16, has no display outputs, and has no recorded dimensions.

Architecture Differences

The architectures represent different generations. The RTX PRO 4500 Blackwell uses Blackwell 2.0 architecture, while the Rubin GPU uses the Rubin architecture. The RTX PRO 4500 Blackwell belongs to the Blackwell PRO W generation, and the Rubin GPU belongs to the Server Rubin generation.

The RTX PRO 4500 Blackwell supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. The Rubin GPU has no graphics API support, confirming its compute-only design. The predecessor relationships also differ: the RTX PRO 4500 Blackwell succeeds Workstation Ada, and the Rubin GPU succeeds Server Blackwell.

The RTX PRO 4500 Blackwell has 82 RT cores for ray tracing workloads. The Rubin GPU lists no RT core count, aligning with its server compute focus. Tensor core counts are 328 versus 896, and FP16 ratios differ: 1:1 for the RTX PRO 4500 Blackwell and 2:1 for the Rubin GPU.

The FP32 throughput of 50.53 TFLOPS on the RTX PRO 4500 Blackwell contrasts with 130.0 TFLOPS on the Rubin GPU. FP16 performance is 50.53 TFLOPS versus 260.0 TFLOPS. Pixel rate favors the workstation card at 269.6 GPixel/s versus 54.41 GPixel/s, while texture rate favors the server part at 2,031.2 GTexel/s versus 789.5 GTexel/s.

The RTX PRO 4500 Blackwell is a dual-slot PCIe card with display connectivity and a 200 W TDP. The Rubin GPU is an SXM module with a 2300 W TDP, designed for server integration without display outputs. Both use TSMC fabrication, but the process nodes differ at 5 nm versus 3 nm.