RTX and GTX are two types of graphics processing units (GPUs) produced by NVIDIA, a leading manufacturer of computer hardware components. The main difference between RTX and GTX GPUs is their support for ray tracing technology. RTX GPUs are designed to support real-time ray tracing, a process that simulates the behavior of light in a 3D environment to create more realistic and immersive graphics. GTX GPUs, on the other hand, do not support real-time ray tracing and are better suited for traditional gaming and other graphic-intensive applications. Additionally, RTX GPUs also support DLSS technology, which uses AI to improve image quality while maintaining performance.