Is better to shut down the laptop for 2h or 2h in standby mode, if you then need it again?
Shut down, or do you keep your car idling just because you want to get going in 2 hours?
What exactly do you mean by better?
I would do it on stand-by, it hardly consumes power and it can be used more quickly.
Is basically irrelevant.
The three seconds
3 seconds boat? It does not even work so fast with a 900P
Difference
In this analogy, however, the standby of the computer corresponds at best to the ignition of the car switched on. The engine is off.