Mozilla has started using WebRender with the Nightly version of its Firefox browser. The graphical renderer for the Servo browser engine is currently only used in combination with Windows 10 and an Nvidia GPU
Moreover, WebRender works with Firefox Nightly only with Nvidia desktop cards and not on laptops. According to developer Jeff Muizelaar of Mozilla is still about 17 percent of the users of Nightly. Mozilla has already been testing WebRender with the Nightly builds since July, but with a limited group of users. On other platforms, except Android, WebRender can already be enabled via the gfx.webrender.all setting.
In addition, GPU’s are better equipped for processing at high resolution, which is necessary the increase of, for example, 4k screens. In addition, there are advantages in the field of multithreading.