Wattage essentially translates to power, and how much power your stand mixer will use while it operates. So a stand mixer with higher wattage should be able to do the job of a lower-wattage mixer much faster. If you ran a 300-watt mixer and 600-watt mixer for the same amount of time. A 250-watt stand mixer will perform well with most doughs and batters. Anything more than that would only be helpful for things like super-stiff bread doughs.