NVIDIA Reflex Feature Detailed, Vastly Reduce Input Latency, Measure End-to-End System Latency
NVIDIA Reflex is a new innovation designed to minimize input latency with competitive e-sports games. When it comes out later this month with patches to popular e-sports titles such as Fortnite, Apex Legends, and Valorant, along with a GeForce driver update, the feature could improve input latencies even without any specialized hardware. Input latency is defined as the time it takes for a user input (such as a mouse click) in a game, to reflect as output on the screen, or the time it takes for your mouse click to register as a gunshot in an online shooter, and appear on-screen. The feature is compatible with any NVIDIA GeForce GPU, GTX 900 series or later.
NVIDIA briefly detailed how this works. On the software side, the NVIDIA driver co-operates with a compatible game engine to optimize the game's 3D rendering pipeline. This is accomplished by dynamically reducing the rendering queue, so fewer frames are queued up for the GPU to render. NVIDIA claims that the technology can also keep the GPU perfectly in sync with the CPU (1:1 render queue), reducing the "back-pressure" on the GPU, letting the game sample mouse input at the last possible moment. NVIDIA is releasing Reflex to gamers as GeForce driver updates, and to game developers as the Reflex SDK. This allows them to integrate the technology with their game engine, providing a toggle for the technology, and also put out in-game performance metrics.
NVIDIA briefly detailed how this works. On the software side, the NVIDIA driver co-operates with a compatible game engine to optimize the game's 3D rendering pipeline. This is accomplished by dynamically reducing the rendering queue, so fewer frames are queued up for the GPU to render. NVIDIA claims that the technology can also keep the GPU perfectly in sync with the CPU (1:1 render queue), reducing the "back-pressure" on the GPU, letting the game sample mouse input at the last possible moment. NVIDIA is releasing Reflex to gamers as GeForce driver updates, and to game developers as the Reflex SDK. This allows them to integrate the technology with their game engine, providing a toggle for the technology, and also put out in-game performance metrics.