Asus ROG Astral GeForce RTX 5090 VS Nvidia RTX Pro 4500 Blackwell

The most striking divide between these two GPUs is raw computational horsepower. The Asus ROG Astral RTX 5090 fields 21,760 shading units and delivers 106.1 TFLOPS of floating-point performance, while the Nvidia RTX Pro 4500 Blackwell comes in at 10,496 shading units and 54.94 TFLOPS — roughly half across both metrics. In practical terms, this gap translates directly into rendering throughput, AI workload capacity, and the ability to sustain high frame rates at extreme resolutions. The 5090′s texture rate of 1,657 GTexels/s versus the Pro 4500′s 858.4 GTexels/s reinforces this: tasks like complex shader workloads, ray tracing, and generative AI inference will complete significantly faster on the 5090.

Clock speeds tell a more nuanced story. The RTX Pro 4500 actually achieves a higher GPU turbo of 2,617 MHz compared to the 5090′s 2,437 MHz, meaning its individual cores run faster under boost. However, this advantage is effectively neutralized by the sheer difference in core count — more slower-clocked cores still outperform fewer faster-clocked ones for parallelizable workloads. Base clocks favor the 5090 at 2,017 MHz versus 1,590 MHz. One genuine tie is GPU memory speed at 1,750 MHz for both, suggesting neither has a bandwidth edge at the memory interface level alone. Both cards also support Double Precision Floating Point (DPFP), which matters for scientific computing and professional simulation workflows.

Overall, the RTX 5090 holds a commanding performance advantage in this group. Its superior shading unit count, pixel fill rate (428.9 vs 293.1 GPixel/s), and nearly double the TFLOPS make it the clear winner for GPU-intensive tasks. The RTX Pro 4500 Blackwell′s higher turbo clock is an interesting data point but does not close the gap — it is better understood as a more efficient, workstation-oriented design rather than a direct performance competitor at this tier.

Both the Asus ROG Astral GeForce RTX 5090 and the Nvidia RTX Pro 4500 Blackwell feature the same effective memory speed of 28000 MHz, ensuring comparable speed in memory data transfer. However, when it comes to maximum memory bandwidth, there is a notable difference: the Asus card offers 1790 GB/s, far outpacing the Nvidia card’s 896 GB/s. This suggests that the Asus GPU can handle a significantly higher volume of data at once, especially in memory-intensive tasks.

Both products come with 32GB of VRAM, ensuring ample memory capacity for demanding applications. Additionally, both GPUs use GDDR7 memory, a high-performance memory standard. The memory bus width, however, differs: the Asus card has a wider 512-bit memory bus, which can contribute to faster data transfer rates compared to the Nvidia card’s 256-bit memory bus. This again highlights the Asus model’s ability to handle more data concurrently.

Both GPUs support ECC memory (Error-Correcting Code), a feature that helps maintain data integrity by detecting and correcting memory errors, making them suitable for applications where reliability is crucial. This shared specification ensures that both cards are equally equipped for professional workloads requiring high memory reliability.

Both the Asus ROG Astral GeForce RTX 5090 and the Nvidia RTX Pro 4500 Blackwell support DirectX 12, but the Asus card supports DirectX 12 Ultimate, which includes additional features compared to the standard DirectX 12 supported by the Nvidia card. Both products are compatible with OpenGL version 4.6 and OpenCL version 3, ensuring wide support for various applications and workloads. In terms of multi-display technology, both cards can support multiple displays, with each capable of handling up to 4 supported displays.

Ray tracing and 3D support are available on both GPUs, making them well-suited for high-quality rendering tasks. Additionally, both GPUs support DLSS (Deep Learning Super Sampling), which improves performance in supported games. Neither of the two cards, however, supports XeSS (XMX), which is specific to certain other hardware.

One notable difference is that the Asus card features RGB lighting, which adds a customizable visual element, while the Nvidia card does not include RGB lighting. Both cards support Intel Resizable BAR (AMD SAM support is not mentioned for either), and neither product has LHR (Lite Hash Rate) limitations, making them both suitable for tasks that require full GPU power.

The Asus ROG Astral GeForce RTX 5090 has an HDMI output, while the Nvidia RTX Pro 4500 Blackwell does not. The Asus card also features 3 DisplayPort outputs, whereas the Nvidia card has 4 DisplayPort outputs, giving it one extra port for display connections. Neither product includes USB-C ports, DVI outputs, or mini DisplayPort outputs, as both are absent in both models.

Overall, the Asus model offers an HDMI output, while the Nvidia card offers one additional DisplayPort output, but neither provides USB-C, DVI, or mini DisplayPort outputs.

Both the Asus ROG Astral GeForce RTX 5090 and the Nvidia RTX Pro 4500 Blackwell use the same GPU architecture, Blackwell, and both are built on the same 5 nm semiconductor size. However, the Asus card has a significantly higher Thermal Design Power (TDP) of 575W, compared to the Nvidia card’s 200W. This indicates that the Asus card requires much more power to operate. Both cards support PCI Express (PCIe) version 5, ensuring high bandwidth for data transfer.

In terms of transistor count, the Asus card has 92,200 million transistors, nearly doubling the Nvidia card’s 45,600 million transistors. This suggests a larger and more complex chip in the Asus model. Both cards lack air-water cooling solutions.

The physical dimensions differ as well: the Asus ROG Astral GeForce RTX 5090 measures 357.6 mm in width and 149.3 mm in height, making it larger than the Nvidia RTX Pro 4500 Blackwell, which measures 266.7 mm in width and 111.8 mm in height.