Unless you're talking big programs that take hours to finish, there is no need in purchasing faster cpu, in you case. You can also get an I7 for less.
What do you need exactly?
I am indeed talking big programs that take a couple of hours to finish...
🙂 I'm a PhD student in Economics.
I want style
and power, a backlit keyboard, with a 15.5 or 15.6 full inch HD screen (I do a lot of multitasking, i.e. browser, referencing program, TeX, and STATA/Matlab open and the more of them I can see at once, the easier my life becomes)
The budget is circa $800 to $1000. I can't do more than $1,000.