Know the specs: Graphic cards.

If you are into playing video games, rendering 3d animation, or editing large video files, a high end graphics card is a must. Graphic cards are responsible to draw what you see on your screen at around 60 times a second. Due to their power, a lot of programs are using the GPU (graphics processing unit) in collaboration with the CPU to crunch numbers.

Know the Specs: RAM

Cool, so you need to buy 8 gigs of ram. well, obviously 8 gigs is better than 4 gigs, but what about if one type of ram has 10-10-10-30 timings and the other has 9-9-9-27? what do all the numbers mean? well... they are rarely explained and unless you try to hard to find them, no one seems to tell you.