Quote: Originally Posted by kf10
is dual core with 1.6GHz faster than a single core of 3.2GHz
or are they equal
and is it possible from within windows to switch off the single core in dual core or more cores
They are not necessarily equal. There is far more than simply clock speeds to take into account. Each chip has a different architecture, instruction set and amount of memory and that really makes a difference. For example, I happen to own a Q9550 quad core. It runs at 2.83Ghz stock. This chip is a fantastic performing chip and part of that reason is the 12MB of L2 Cache on that chip. Compared to a Q9400 quad core, which runs at 2.66Ghz...it's only got 6MB of L2 cache and that really makes a noticeable difference. It's not so much the 200Mhz clock speed difference between them.
In addition, the software that you are running also makes a difference. If you are running a single threaded application, the 3.2Ghz will be much faster than the dual core 1.6ghz...as you would not be able to really take advantage of the 2nd core with a single threaded application.