NVIDIA has just released their first official performance numbers for their new GeForce RTX 2080 graphics cards. According to NVIDIA the new RTX 20 series offer some 50% performance improvements (on average) on architectural improvements alone, in a per-core basis. Then this number is built upon by using the RT cores, which gives a performance advantage over the previous generation by up to 2x more. Games like PUBG, Shadow of the Tomb Raider, and Final Fantasy XV all see around 75% more improved performance when using this tech.
NVIDIA is also showing off the ability to run games at 4K resolution at over 60 FPS, which would make the RTX 2080 the card to get if that is the resolution that you are running. This is quite impressive!