NVIDIA GeForce RTX 4050 Mobile vs NVIDIA Rubin GPU Comparison

The Verdict

The database contains two NVIDIA GPUs that occupy completely different segments. The GeForce RTX 4050 Mobile is an active, shipping mobile part with a full suite of recorded benchmark scores. The Rubin GPU is a server-class accelerator with an active production status but zero recorded benchmark entries, so its performance can only be characterized through architectural specifications. For anyone seeking measured performance data today, the RTX 4050 Mobile is the only option with verifiable results. The Rubin GPU, despite its massive listed specifications, has no benchmark scores in the database, making direct performance comparison impossible at this time.

The RTX 4050 Mobile sits at the 63rd percentile among all GPUs in the database, with an average benchmark score of 19049. Its closest rival is the AMD Radeon RX 6600 at 19036, a delta of only 0.1%, meaning the two are effectively tied in aggregate performance. The Rubin GPU, by contrast, has an average benchmark score of 0 and a percentile rank of 50, which reflects the absence of recorded tests rather than actual performance. The verdict from the data is straightforward: the RTX 4050 Mobile is a measured, competitive mobile GPU, while the Rubin GPU is a specification-only entry awaiting benchmark data.

Where Each One Wins

The RTX 4050 Mobile wins in every category where measured data exists. It has nine benchmark results spanning Geekbench OpenCL and Vulkan, plus PassMark DirectX 9, 10, 11, 12, G2D, G3D, and GPU Compute tests. Its highest single score is 75235 in Geekbench Vulkan, followed by 74748 in Geekbench OpenCL. In PassMark tests, the DirectX 9 score of 184 is the strongest legacy API result, while the G3D score of 14423 represents the overall graphics workload. The GPU Compute score of 5947 indicates general compute capability.

The Rubin GPU wins in raw specification counts. It lists 28672 shading units versus 2560 for the RTX 4050 Mobile, 896 tensor cores versus 80, and 896 texture mapping units versus 80. Its FP32 throughput is listed at 130.0 TFLOPS, compared to 8.986 TFLOPS for the mobile part. The Rubin GPU also lists 288 GB of HBM4 memory with a 16384-bit bus and 22.1 TB/s bandwidth, while the RTX 4050 Mobile has 6 GB of GDDR6 on a 96-bit bus with 192.0 GB/s. These are theoretical maxima, however, because no benchmark results confirm real-world behavior for the Rubin GPU.

Architecture Differences

The two GPUs come from different architectural generations and process nodes. The RTX 4050 Mobile uses the AD107 chip based on Ada Lovelace architecture, fabricated by TSMC on a 5 nm process. It contains 18,900 million transistors on a die size of 159 mm², yielding a transistor density of 118.9 million per mm². The Rubin GPU uses the GR100 chip based on the Rubin architecture, also fabricated by TSMC but on a 3 nm process. It contains 336,000 million transistors on a die size of 1456 mm², for a density of 230.8 million per mm².

The RTX 4050 Mobile includes 20 ray tracing cores and 80 tensor cores. The Rubin GPU lists tensor cores at 896 but has no ray tracing core count recorded. The Rubin GPU has 24 ROPs, fewer than the 48 ROPs on the RTX 4050 Mobile, despite having vastly more shading units and TMUs. The mobile part has a base clock of 1455 MHz and a boost clock of 1755 MHz. The Rubin GPU has a base clock of 700 MHz and a boost clock of 2267 MHz, so its peak clock is higher but its base clock is much lower.

Memory technology differs completely. The RTX 4050 Mobile uses GDDR6 at 2000 MHz with 16 Gbps effective, while the Rubin GPU uses HBM4 at 2695 MHz with 10.8 Gbps effective. The mobile part supports PCIe 4.0 x8, while the Rubin GPU uses PCIe 6.0 x16. The RTX 4050 Mobile has display outputs described as portable device dependent, while the Rubin GPU has no display outputs. API support also diverges: the RTX 4050 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, while the Rubin GPU lists N/A for all three APIs.

FAQ

Q: Which GPU has better measured performance?

A: The RTX 4050 Mobile has an average benchmark score of 19049 across nine tests. The Rubin GPU has no benchmark entries, so its average score is 0 and no measured comparison is possible.

Q: How does the RTX 4050 Mobile compare to its nearest rival?

A: The RTX 4050 Mobile scores 19049, which is 0.1% above the AMD Radeon RX 6600 at 19036 and 0.1% above the NVIDIA Quadro K6000 at 19030. It trails the NVIDIA Tesla K20m by 0.2% (19089) and leads the NVIDIA RTX 2000 Ada Generation by 0.5% (18954).

Q: What memory configurations do the two GPUs have?

A: The RTX 4050 Mobile has 6 GB of GDDR6 on a 96-bit bus with 192.0 GB/s bandwidth. The Rubin GPU has 288 GB of HBM4 on a 16384-bit bus with 22.1 TB/s bandwidth.

Q: Are both GPUs currently in production?

A: Yes, the database lists both the RTX 4050 Mobile and the Rubin GPU as having an active production status.

Q: What are the power requirements for each GPU?

A: The RTX 4050 Mobile has a TDP of 50 W and uses no power connectors. The Rubin GPU has a TDP of 2300 W and a suggested PSU of 2700 W.

Q: Do both GPUs support the same graphics APIs?

A: No. The RTX 4050 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.

Head-to-Head Benchmarks

The database records no head-to-head benchmark entries between the RTX 4050 Mobile and the Rubin GPU. The wins counters show 0 for both sides, and the head-to-head benchmark array is empty. This means the comparison must rely on the RTX 4050 Mobile's standalone scores and the Rubin GPU's listed specifications.

The RTX 4050 Mobile's strongest result is in Geekbench Vulkan at 75235, which is 487 points higher than its Geekbench OpenCL score of 74748. The PassMark G3D score of 14423 shows the overall graphics workload, while the DirectX 9 score of 184 is the highest among the legacy API tests, followed by DirectX 11 at 130, DirectX 10 at 79, and DirectX 12 at 61. The G2D score of 633 reflects 2D graphics performance, and the GPU Compute score of 5947 indicates compute throughput.

The Rubin GPU has no recorded benchmark scores, so there are no exact numbers to compare against the RTX 4050 Mobile. Its listed FP32 of 130.0 TFLOPS is 14.5 times the RTX 4050 Mobile's 8.986 TFLOPS, but this remains a specification figure without test confirmation. The texture rate of 2,031.2 GTexel/s for the Rubin GPU dwarfs the 140.4 GTexel/s of the mobile part, yet again, no benchmark validates this in practice. The pixel rates are closer: the Rubin GPU lists 54.41 GPixel/s versus 84.24 GPixel/s for the RTX 4050 Mobile, meaning the mobile GPU has a higher pixel throughput despite its smaller overall design.

Specification Differences

The two GPUs differ in nearly every specification field. The RTX 4050 Mobile belongs to the GeForce 40-series with the AD107 chip on Ada Lovelace architecture, released on 2023-01-02. The Rubin GPU belongs to the Server Rubin (Rxx) generation with the GR100 chip on Rubin architecture, with a release date of 2025-12-31. The RTX 4050 Mobile uses a 5 nm TSMC process; the Rubin GPU uses 3 nm TSMC. Transistor counts are 18,900 million versus 336,000 million. Die sizes are 159 mm² versus 1456 mm². Transistor densities are 118.9M per mm² versus 230.8M per mm².

Clock speeds differ substantially. The RTX 4050 Mobile has a base of 1455 MHz and boost of 1755 MHz, with memory at 2000 MHz and 16 Gbps effective. The Rubin GPU has a base of 700 MHz and boost of 2267 MHz, with memory at 2695 MHz and 10.8 Gbps effective. Memory size is 6 GB versus 288 GB, type is GDDR6 versus HBM4, bus width is 96 bit versus 16384 bit, and bandwidth is 192.0 GB/s versus 22.1 TB/s.

The RTX 4050 Mobile has 2560 shading units, 80 TMUs, 48 ROPs, 20 RT cores, and 80 tensor cores. The Rubin GPU has 28672 shading units, 896 TMUs, 24 ROPs, no recorded RT core count, and 896 tensor cores. Pixel rates are 84.24 GPixel/s versus 54.41 GPixel/s. Texture rates are 140.4 GTexel/s versus 2,031.2 GTexel/s. FP32 is 8.986 TFLOPS versus 130.0 TFLOPS. FP16 is 8.986 TFLOPS at 1:1 ratio versus 260.0 TFLOPS at 2:1 ratio.

Power and physical specifications also diverge. The RTX 4050 Mobile has a TDP of 50 W, an IGP slot width, no power connectors, and a PCIe 4.0 x8 interface. The Rubin GPU has a TDP of 2300 W, an SXM Module slot width, a suggested PSU of 2700 W, and a PCIe 6.0 x16 interface. The RTX 4050 Mobile has portable device dependent display outputs, while the Rubin GPU has no outputs. The RTX 4050 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4; the Rubin GPU lists N/A for all three. The predecessor of the RTX 4050 Mobile is GeForce 30 Mobile, with GeForce 50 Mobile as successor. The Rubin GPU's predecessor is Server Blackwell, with no successor listed.