Less powerful than the original 50w, but more than sufficient on a ceiling light with 3 spots. These are not my first in the genre, they are as effective as brand models 10 room. No heat generated, low power consumption and especially instant start, it is this last point that made me change my versions "standard energy saving" by LED However, attention to confusing description as to color: the lighting is warm white and goes very well with conventional lighting. One star less for this ambiguity otherwise no complaints yet, not enough back, I will change my review if I have a concern for a day or if they stop working early.
