It’s essential to assess your PC’s performance to determine an appropriate refresh rate. The most important factor is knowing your PC’s limitations. If you think that your PC can handle 1080p gaming at 90 FPS, it makes sense to go beyond a regular 60hz monitor and upgrade to a 120hz. If your PC can’t consistently give you above 120 FPS, it is very difficult to recommend a 240hz monitor. To make an informed decision, try to find some benchmarks for your GPU to understand how much frame rate you can expect in different games to help you pick the most sensible refresh rate for your gaming needs.