Wolfram01 said:
A lot of people also like to comment about how, oh, you upgrade every year! So pricey! Well, no. Most people do not. If you look at the Steam stats, there's still a plethora of people running 9800GTs and 8800GTs from, like, 5 years ago. With this $500 PC, at most, you could simply add a second 6850 in crossfire and get superb 1080p performance.
I really have no clue what a 6850 is, or 9800GTs... O_O Plus when the time comes that I would have to upgrade it, I don't think I really would know how.[/quote]
Understandable, but it doesn't take much research to find out. I spent about a week doing research on current hardware before building my PC, and my knowledge went from nil to knowing pretty much all I needed to know. There's not just a lot of hardware sites full of info, but they usually have really good forums too with lots of people willing to help you out.
Just FYI, Nvidia's 3 gen old GPUs were 7xxx,8xxx, and 9xxxx (like 7600, 8800, 9800). Nvidia's next gen was the 2xx series (220, 240, 250, 260, 285 etc), then they upgraded to their DX11 cards aka "Fermi" which are the 4xx series (450, 460, 470, 480), and just this year they came out with their upgrade to Fermi, the 5xx series (550, 560, 570, 580, and just this week the 590 which is two 570s on one card).
From ATI (now called AMD Radeon) all you need to know is they came out with their 5xxx series with DX11 a year before Nvidia's 4xx series. The 5xxx series is huge ranging from low end cards like 5550, 5650... up to 5850, 5870, and 5970. ATI just released their 6xxx series this year, the 6850, 6870, 6950, 6970, and just last week the 6990 juggernaught.
With both companies, the higher the number, the better the card. As for which you might want to buy, it comes down to budget and expected performance.