Thank you everybody for your answers ::- D!
nenforcer: I definitely won't go CrossFire! I never liked multi GPU solutions and never will, I find them wasteful and too driver dependent ::- D. I prefer being patient, waiting 1-2 years until I get a single GPU at a great price. After all, there are pleeeeeenty of games to play ::- D.
peonyu: it's true that evolution slowed down a bit. I never had a computer for 5 years and see it still hold its own against the newer ones. Of course, it's a piece of junk with my E6600 (will upgrade it), but not as junk as my previous computer which turned to junk in just 3 years hehe.
AoS810: 6850, 6870, pretty much the same. I think I'm gonna overclock the 6850. I'm on a budget with this thing. Most of the money goes into the new computer, this is just a refresh of my older one, so I can pass it to my girlfriend.
Ben90: he meant that I can use PCI express 1 to power a 6670 without extra cables. I was curious of power output of PCI express 1 = power output of PCI express 2.
BFG10K: what about a 6670 which doesn't have extra connectors BUT it is intended for PCI 2, not PCI 1. Can PCI 1 power it? (Barfo's answer still left me a bit unsure).