1080 is damaged, is it cost-effective to add 2800 to 2070 graphics card?

Even if 1080 is broken, it's useless for you to hold it. Graphics cards are generally not so easy to break down. But your graphics card is over-guaranteed, and there's nothing you can do. It's not bad to switch to 2070. Similar to the performance of 1080, playing games such as going against the current to eat chicken also has some advantages, and it also supports black technologies such as ray tracing and DLXX. High cost performance.