In reply to a
post by Anonymous:
There's plenty tryingto help with the question, butMy router is always left on but I only log in to the ISP when I want.
Why?
Sorry for late reply as I'm not at home, and also perhaps for the obvious, but why not if I don't need to be online when I'm sleeping.

As bluacid says, plus:-
The whole point of broadband is that it is always on. The fact you disconnect from your ISP does not disconnect the router from the exchange.
At all times the router is switched on there is a constant stream of packets in each direction between it and the exchange, at the connection speed. This applies whether or not you are logged into your ISP.
When you are logged into your ISP then these packets may or may not contain data, depending on what you are doing at any particular instant. When you do a speed test, it isn't the speed of the packets that changes, it is the amount of data the ISP sends to you that gets into the steady stream of packets.
So disconnecting as you are doing is pointless. You should either leave it logged into the ISP, or turn it off completely. At least that way you save electricity

.
(Edit - and if you turn it off, also either turn the switch off at the mains socket if it has one, or remove the plug from the mains socket. The router power supply uses power even when the router is turned off.)
Edited by RobertoS (Sat 02-Apr-11 23:40:15)