your need will most likely take you to getting a gaming laptop. but here is what you should know. core2duos and quads will suffice as gaming processors. i3 is a new and renamed core2quad variant and of course faster, i5 is even better. now if you want to go cheaper I suggest you get the i3 and get chose a laptop with a good video card. on your list of what you are going to do with your laptop, a fast video card is imperative. so make room for a video card upgrade as these stock laptops may not have the video power you need. If you really want to go cheaper, then get a desktop... twice the power at half the price.
when you get your laptop, you should know how to take care of it and to troubleshoot it in case problems arise. Here is a link I suggest you keep bookmarked for future reference: http://laptoptroubleshoot.com/
I have been browsing around and trying to figure out which laptop to buy.
As most of the things depend on type of use, let me tell you that I am going to use it for running software like Visual Studio, SQL management, photo-video editing, web surfing and gaming sometimes.
There are two things I am confused about:
Which processor (i3 or i5) would be better for me?
Do I need a graphics card as well? And, can I attach a graphics card later, after buying the laptop?
I came across the following models and need your advice about them:
I am concerned about the prices as well. I want the cheapest laptop which suffice my needs.