What refresh rate do I actually need on an ultrawide?

100-120Hz is plenty for productivity and casual gaming and is where most budget and mid-range ultrawides land. 144Hz is the practical floor for competitive gaming on a 1440p ultrawide, and 240Hz OLEDs are where reviewers say motion clarity stops being a bottleneck — but you need a GPU that can actually push those frames at 3440x1440 or 5120x1440.