Hi, I'm looking to build a very good gaming computer and was wondering if anyone could help me. Price is not much of an issue but at same time i'm not looking to waste money. Here is what i have been able to figure out on kind of what I want if anyone could help me fill in the details
Crossfire isn't an upgrade silver bullet, depending on your gaming resolution, it might be a waste. Moreover, crossfire boards cost at least 100$ more than others, if you do the math: 2x4850=300$ + board extra = 400$. Considering the 4870x2 is supposed to cost ~500$, will not require Crossfire board AND will probably give you more than 25% performance gain, you might want to reconsider.
What is your monitor resolution?
For memory, you don't need 1333MHz memory, DDR2-800 is enough, take any you find here (top rated on top).