How to choose an intel chipset?

I am looking into building a computer for my grandpa so im looking to keep this build on a budget. I am going to use intergrated graphics but I can't understand why one chipset is better than another.

Which CPU?

Different chipsets mean different features, which socket do you have in mind?

the first thing to do is determine WHAT will he be doing on the computer.

What is your budget?

 

i was thinking about using an i3 3240. my budget is about 300-400$

You might wanna go AMD at that budget

Build an AMD APU, A10-6800k or A10-5800k.. That is a solid chipset and graphics for that price range.