What is the width of the psd source for website design?

Question

Design

Greetings!
I have recently been doing web design. Lots of information but no clear answer.
The design of the site is more interesting for viewing on the monitor. What width to create psd?
I use the 960 grid action in Photoshop, the sites turn out to be narrow when viewed on the monitor, how to make them fit the entire width of the monitor?

Answer 1

Universal option - adaptive design. But it's more difficult.
Choose based on your target audience.
Those. even if you do not take smartphones - there are many tablets and netbooks. And depending on the audience, you need to roughly imagine how the site will be used.
In general, the question is very philosophical.

Answer 2

Draw under the "rubber" layout, not the fix