You can find various kinds of online games, and maybe perhaps not most them require the most recent GPU to conduct as an instance, CSGO. CSGO may perform having a low-mid grade GPU, even at 1440P(2K). If you choose you will play games like Battlefield, you will most likely want an adequate mid-top tier GPU to conduct it smoothly.
The truth is that you can check games minimum hardware specifications to find what type of sport you're dealing with of course, if your components is enough. Or if that's insufficient, you will find youtube movies revealing the way the game will probably operate using a special GPU, maybe not very tricky to come across these videos. https://www.latestgazette.com/geforce-rtx-3080/