Microwave Wattage Guide for Cooking A higher-wattage microwave does not necessarily mean it is better. While it can cook food faster, it may only be suitable for some types of cooking. For most purposes, a microwave with around 1,000 watts is sufficient. Microwaves with lower wattages may be slower and less even in cooking. Finding a balance that suits your cooking needs is essential, rather than opting for the highest Wattage available.