Our last microwave was a GE 1,100 watts. Our 1,100 boiled 1/2 c water in 55 seconds. This 700 boiled 1/2 c. in 60 seconds. I was surprised! I am happy to have a smaller appliance that takes up less room on the counter. We just bought it yesterday so don't have enough info to rate it, really. But, the boiling test was worth a note. This appliance is no longer being made by GE, so perhaps it is all moot.