well, if what you are saying is what I'm thinking you are, it doesn't actually TURN OFF, but instead goes into a stand-by mode, in which power is still distributed to it, but in small amounts and its just to receive a interupt (not IRQ) signal saying that there is activity occuring, when it recieves that it goes into a normal mode. I honestly dont know if its better to have that or a screen saver, but even in stand-by there is a small amount of juice there but its very miniscule. One thing I WOULD suggest, however, is at least a reboot. I leave mine on 24/7 and reboot every other day, or as I see the need, to clear anything cached in memory like TSR programs and such.