wait.. my computer was 1700 dollars ( really high end gaming pc as a gift ), my graphics card was almost $500.00 how can you make a comp that can run almost anything for that price?
By reading some text.
No, seriously, it's not too hard to make a beast of a
gaming machine for cheap. Particular other (professional, niche) applications can be significantly more demanding, and so things like high-end workstation graphics cards, 12GB or more of very fast RAM and so on might be in order. Oh, and if you're into Eyefinity in a BIG way, you might want to fork out for, say, the HD5970, if not multiples of it. Plus the power supply to handle that, and so on.
I mean no offence by stating any of this, by the way. I'm sure your $1700 PC is quite the build, for what it's worth. At the same time, gaming PCs can be both remarkably cheap and surprisingly effective, if you do it right.
edit: But also, please don't take my word for it! Benchmarks tell the story, better than I possibly could.