There's a twist however, as James was sent three different processors - an Intel i5, i7 and i9. James tests all three to find out which makes most sense for this level of hardware... 00:00 Start 00:53 ...

Are there many differences between the i3, i5 & i7 mobile processors? I am looking at performance and battery life. Does a i7 chew through more power than a i5? I see the thermal output is the same ...