NVIDIA GeForce RTX 5090 Mobile vs NVIDIA Rubin GPU Comparison

Head-to-Head Benchmarks

The recorded data presents a unique comparison: the NVIDIA GeForce RTX 5090 Mobile has a full suite of benchmark scores, while the NVIDIA Rubin GPU has no recorded benchmarks in the database. The Rubin GPU’s average benchmark score is 0, and its percentile ranking sits at 50, which is a placeholder position given the absence of test data. The RTX 5090 Mobile, by contrast, holds an 84th percentile ranking among all GPUs, with an average benchmark score of 45,152.

The RTX 5090 Mobile’s strongest recorded result comes from Geekbench OpenCL, where it scores 201,834. Its Geekbench Vulkan score is nearly as high at 198,405. In 3DMark Steel Nomad DX12, the card delivers a score of 5,871. The PassMark suite shows a G3D score of 30,034, a GPU Compute score of 13,401, a G2D score of 1,057, and DirectX 9, 10, 11, and 12 scores of 324, 183, 269, and 138 respectively.

Since the Rubin GPU has no benchmark entries, there are no direct head-to-head wins for either product. The database lists zero wins for both items. The RTX 5090 Mobile’s nearest rivals provide context for its performance level: the AMD Radeon Pro 5500 XT averages 45,384, which is 0.5% higher than the RTX 5090 Mobile. The NVIDIA GeForce RTX 4070 Ti averages 44,795, which is 0.8% lower. The Intel Arc A730M averages 45,592, coming in 1% higher, and the NVIDIA RTX 5880 Ada Generation averages 45,972, which is 1.8% higher. The RTX 5090 Mobile sits within a tight band of these four competitors, trailing the fastest by less than 2% and leading the slowest by less than 1%.

The lack of Rubin GPU benchmarks means the comparison cannot be quantified on a test-by-test basis. The database records the Rubin GPU as having no measured performance data, so any performance relationship between the two cards must be derived from architectural and specification analysis rather than direct scores.

The Verdict

The data indicates two fundamentally different products serving different roles. The NVIDIA GeForce RTX 5090 Mobile is a laptop-class GPU with a 95 W TDP, an integrated form factor (IGP), and no power connectors. It is designed for portable systems and has an active production status with a release date of March 26, 2025. Its benchmark scores place it in the 84th percentile, and its nearest rivals are desktop and mobile cards within a narrow performance band.

The NVIDIA Rubin GPU is a server-class accelerator with a 2,300 W TDP, an SXM Module slot width, and a suggested PSU of 2,700 W. It has no display outputs, which confirms its role as a compute or datacenter part rather than a graphics card. Its production status is also active, with a release date of December 31, 2025. The Rubin GPU has no benchmark data, so its performance cannot be verified from the database.

Based strictly on the recorded data, a system builder looking for a mobile graphics solution with verified performance metrics would select the RTX 5090 Mobile. It has measurable scores across DirectX 9 through 12, OpenCL, Vulkan, and 3DMark tests. A datacenter operator planning for high-throughput compute workloads would consider the Rubin GPU, but the absence of benchmark results means its capabilities are unverified in this database. The Rubin GPU’s architectural specifications indicate a far larger compute resource, but without scores, the data cannot support a performance claim.

Architecture Differences

The two GPUs use entirely different architectures and process nodes. The RTX 5090 Mobile uses the Blackwell 2.0 architecture on a 5 nm TSMC process, while the Rubin GPU uses the Rubin architecture on a 3 nm TSMC process. The chip identifiers also differ: the RTX 5090 Mobile uses the GB203 chip, and the Rubin GPU uses the GR100 chip.

Transistor counts and die sizes diverge sharply. The RTX 5090 Mobile has 45,600 million transistors on a 378 mm² die, yielding a transistor density of 120.6 million per mm². The Rubin GPU has 336,000 million transistors on a 1,456 mm² die, with a density of 230.8 million per mm². The Rubin GPU’s transistor density is nearly double that of the RTX 5090 Mobile, which reflects the tighter 3 nm process.

The RTX 5090 Mobile includes 82 ray tracing cores, but the Rubin GPU’s ray tracing core count is listed as null in the database, meaning no data is recorded. The RTX 5090 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The Rubin GPU lists N/A for DirectX, OpenGL, and Vulkan, indicating it is not designed for graphics API workloads in the traditional sense. The RTX 5090 Mobile has display outputs described as portable device dependent, whereas the Rubin GPU has no outputs at all.

The memory technologies also reflect their different roles. The RTX 5090 Mobile uses GDDR7, while the Rubin GPU uses HBM4. The RTX 5090 Mobile’s memory clock runs at 1,750 MHz with 28 Gbps effective, while the Rubin GPU’s memory clock runs at 2,695 MHz with 10.8 Gbps effective. The RTX 5090 Mobile’s boost clock is 1,515 MHz, while the Rubin GPU’s boost clock is 2,267 MHz. The Rubin GPU’s base clock is lower at 700 MHz compared to the RTX 5090 Mobile’s 990 MHz.

Specification Differences

The most obvious specification gap is memory capacity. The RTX 5090 Mobile has 24 GB of GDDR7 on a 256-bit bus, providing 896.0 GB/s of bandwidth. The Rubin GPU has 288 GB of HBM4 on a 16,384-bit bus, providing 22.1 TB/s of bandwidth. The Rubin GPU’s memory bus is 64 times wider, and its bandwidth is roughly 24.7 times higher.

Shading units differ substantially: the RTX 5090 Mobile has 10,496 shading units, while the Rubin GPU has 28,672. Texture mapping units are 328 versus 896, and tensor cores are 328 versus 896. The raster operation units are unusual: the RTX 5090 Mobile has 112 ROPs, while the Rubin GPU has only 24 ROPs. This low ROP count aligns with the Rubin GPU’s lack of display outputs and graphics API support, as ROPs are primarily used for pixel output.

Pixel and texture rates reflect these differences. The RTX 5090 Mobile achieves 169.7 GPixel/s and 496.9 GTexel/s. The Rubin GPU achieves 54.41 GPixel/s and 2,031.2 GTexel/s. The Rubin GPU’s pixel rate is lower despite its larger compute resources, which again points to its non-graphics focus. The texture rate is over four times higher on the Rubin GPU.

Compute throughput shows the largest gap. The RTX 5090 Mobile delivers 31.80 TFLOPS FP32 and 31.80 TFLOPS FP16 with a 1:1 ratio. The Rubin GPU delivers 130.0 TFLOPS FP32 and 260.0 TFLOPS FP16 with a 2:1 ratio. The Rubin GPU has roughly 4.1 times the FP32 throughput and 8.2 times the FP16 throughput.

Power and interface specifications also diverge. The RTX 5090 Mobile has a 95 W TDP and uses a PCIe 5.0 x16 interface. The Rubin GPU has a 2,300 W TDP and uses a PCIe 6.0 x16 interface. The RTX 5090 Mobile has no power connectors, while the Rubin GPU’s power connector data is null, but its suggested PSU is 2,700 W. The RTX 5090 Mobile is an integrated package (IGP), while the Rubin GPU is an SXM Module.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The RTX 5090 Mobile has an average benchmark score of 45,152. The Rubin GPU has an average benchmark score of 0, as no benchmarks are recorded for it.

Q: How does the RTX 5090 Mobile compare to its nearest rivals?

A: The RTX 5090 Mobile trails the AMD Radeon Pro 5500 XT by 0.5%, leads the NVIDIA GeForce RTX 4070 Ti by 0.8%, trails the Intel Arc A730M by 1%, and trails the NVIDIA RTX 5880 Ada Generation by 1.8%.

Q: What is the memory configuration of each GPU?

A: The RTX 5090 Mobile uses 24 GB of GDDR7 on a 256-bit bus with 896.0 GB/s bandwidth. The Rubin GPU uses 288 GB of HBM4 on a 16,384-bit bus with 22.1 TB/s bandwidth.

Q: Do both GPUs support DirectX?

A: The RTX 5090 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The Rubin GPU lists N/A for DirectX, OpenGL, and Vulkan, indicating no graphics API support.

Q: What is the FP32 compute throughput for each GPU?

A: The RTX 5090 Mobile delivers 31.80 TFLOPS FP32. The Rubin GPU delivers 130.0 TFLOPS FP32, which is approximately 4.1 times higher.

Q: What are the power requirements for each GPU?

A: The RTX 5090 Mobile has a 95 W TDP and uses no power connectors. The Rubin GPU has a 2,300 W TDP and requires a suggested PSU of 2,700 W.

Q: Which GPU has more shading units?

A: The Rubin GPU has 28,672 shading units, while the RTX 5090 Mobile has 10,496 shading units. The Rubin GPU also has 896 tensor cores versus 328 on the RTX 5090 Mobile.