NVIDIA has reportedly been hit with a US Department of Justice (DOJ) antitrust probe over the tactics the company allegedly employs to sell or lease its AI GPUs and data-center networking equipment, "The Information" reported. Shares of the NVIDIA stock fell 3.6% in the pre-market trading on Friday (08/02). The main complainants behind the probe appear to be a special interest group among the customers of AI GPUs, and not NVIDIA's competitors in the AI GPU industry per se. US Senator Elizabeth Warren and US progressives have been most vocal about calling upon the DOJ to investigate antitrust allegations against NVIDIA.

Meanwhile, US officials are reportedly reaching out to NVIDIA's competitors, including AMD and Intel, to gather information about the complaints. NVIDIA holds 80% of the AI GPU market, while AMD, and to a much lesser extent, Intel, have received spillover demand for AI GPUs. "The Information" report says that the complaint alleges NVIDIA pressured cloud customers to buy "multiple products". We don't know what this means, one theory holds that NVIDIA is getting them to commit to buying multiple generations of products (eg: Ampere, Hopper, and over to Blackwell); while another holds that it's getting them to buy multiple kinds of products, which include not just the AI GPUs, but also NVIDIA's first-party server systems and networking equipment. Yet another theory holds that it is bundle first-party software and services to go with the hardware, far beyond the basic software needed to get the hardware to work.

We've seen NVIDIA's move to provide RTX effects on older, non-RT capable hardware today being met with what the company was certainly expecting: a cry of dismay from users that now get to see exactly what their non-Turing NVIDIA hardware is capable of. The move from NVIDIA could be framed as a way to democratize access to RTX effects via Windows DXR, enabling users of its GTX 1600 and 1000 series of GPUs to take a look at the benefits of raytracing; but also as an upgrade incentive for those that now see how their performance is lacking without the new specialized Turing cores to handle the added burden.

Whatever your side of the fence on that issue, however, NVIDIA has provided users with one more raytraced joy today. Three of them, in fact, in the form of three previously-shown tech demos. The Star Wars tech demo (download) is the most well known, certainly, with its studies on reflections on Captain Phasma's breastplate. Atomic Heart (download) is another one that makes use of RTX for reflections and shadows, while Justice (download) adds caustics to that equation. If you have a Turing graphics card, you can test these demos in their full glory, with added DLSS for improved performance. If you're on Pascal, you won't have that performance-enhancing mode available, and will have to slog it through software computations. Follow the embedded links for our direct downloads of these tech demos.