I would imagine that 1s response to approximately 8-10ms in actuallity with the red-green transfer time factored in. Never buy a monitor based on the manufacturers posted response time, because it's a big fat lie (somewhat...). Also keep in mind that the faster the response time means the less clear the onscreen image, so u do sacrifice clarity for speed. What you really want is a good mid-range response monitor with equally as good image quality. Anything sub 12ms (some would argue even 16ms) is going to be as low as you will ever need for gaming purposes.