Krishna-it is the name of the Supreme Personality of Godhead.Krishna the name and He  himself is not different.The name and the lord is same.This is the fact.
In material world Water and its name's function is different.Simply by thinking  of water will not Quench the thirst.We have to take water to quench the thirst.Uttering the name of Water will not help to quench.But Krishna the name of the Supreme lord and he himself is one and same.There is no disparity between these two.It is transcendental in highest order.
Krishna the name itself  is meant all attractive.His Name and His activities are beyond of our mental speculation and concoction.Simply by chanting his sweet name of Hare Krishna Hare Krishna Krishna Krishna Hare Hare ,Hare Ram Hare Ram Ram Ram Hare Hare  will gradually  drag us from the mire of  inferior pleasure to the superior pleasure.Krishna is the only reservoir of all ecstatic and purest pleasure and Love.
Krishna- the sound is transcendental.Krishna means the highest pleasure.Each of us,every living being,seeks pleasure.But we do not know how to seek pleasure perfectly.With a materialistic concept of life,we are frustrated at every step in satisfying our pleasure because we have no information regarding the real level on which to have real pleasure,one must first understand that he is not the body but Consciousness.Not exactly consciousness, for consciousness is actually the symptom of our real identity:We are pure Soul, now merged within this material body.The moment  we become Krishna Conscious we can experience the eternal joy and bliss.This is the Krishna's beauty in all respect.We should simply chant his name and can gradually uderstand his attractions by his mercy.All the Best.
Hare Krishna.