i have core 2 duo 2.66ghz does it mean that this 2.6ghz is doubled processor which means 5.2 ghz ?

Answer 1

It will always run at 2.66gHz unless you overclock it. BUT C2D does more work per clock cycle that is why it easily beats old, high gHZ dual cores.
It is just like having 2 cars that could run 100mph. You can never make the two run at 200mph but you could do a lot more at the same time w/ 2 cars instead of waiting for Dad's car when you have a date.

Answer 2

No, the "duo" part doesn't mean that the 2.6ghz frequency is doubled. What it does mean is that you have 2 cpu "cores" each working at 2.66ghz. It's like having two brains inside of the computer instead of one. (or two vehicles carrying stuff back and forth, and NOT one vehicle traveling twice as fast).

So, things that used to slow down will probably work much faster. Also, it allows you to multitask on the computer much more efficiently.

Answer 3

no its dosent work like that. to hard to explain, but you can read about it.