Nvidia has quietly made RTX Voice work on non RTX graphics cards. As discovered by Tom’s Hardware, RTX Voice now works on GTX graphics cards all the way down to GTX 600 series cards. If you have Nvidia 410.18 driver or newer, it should work.
RTX Voice was released nearly year ago as a feature for the GeForce RTX 20 series graphics cards to improve audio communication by reducing background noise using AI. At the time, NVIDIA claimed it would only work on Tensor cores of the RTX GPUs but soon after, it was modded to work on GTX cards.
If you want to try RTX Voice on your GTX graphics card, you can download the app here.
Source: Tom’s Hardware