What is wattage of Sony PS3 as Blu-Ray player vs. other Blu-Ray Players?

[markw]

I am thinking of getting a PS3 as a Blu-Ray player mostly but am also looking at other Blu-Ray Players.
I know the PS3 has a 380 Watt power supply. Does it use this much wattage at most times or is it less? I know that may be for video games. Does it use less wattage for playing blu-ray. How does this compare to the wattage of standard Blu-Ray players? I know overtime this cost could add up if the PS3 is much higher.