The current rating on the PC is the max. it will draw. The PC just draw as much current up to that point as it needs depending on a number of factors, CD is running? hard drive is running? USB ports being used? How heavy the CPU is being used? Optical mouse is in use (requires a bit more current than normal ball mouse)? etc so there is no fixed figure that anyone can give you for how much current a web console is using as a web may use the items I mentioned above.
