Regarding the pc-4400, I haven't found a single board that supports ddr550. But if it can be
easily overclocked to work, then I am satisfied.
Regarding the power supply, theres just some more sorting I have to do but I do have my eye on the powerstream (
http://www.newegg.com/app/ViewProductDesc.asp?description=17-104-152&depa=1).
As for the card, I am looking for outstanding performance, but again, I want it at a reasonable increase while looking at cost efficiency. I think we all agree that the x850 XT has outperformed the 6800 series, but if the difference factor is minor and not noticeable by the human eye, then spending the extra $100 just doesn't seem to be worth it.
Now can we say that 6800 GT-OCed-SLI can outperform a x850 XT OCed?
I think the basic conclusion here is that you are getting a 5 - 10 fps performance increase for $120 more. That just doesn't seem straight out reasonable to me.
@gaara
I see your point. However, if I buy a 6800 GT now, it would definitely be much cheaper to buy an additional 6800 GT for cheap rather than dumping my first one for a superpower ATI card for full price. My point is that if I buy a 6800 GT now, it's more of an investment later on to add to it rather than throwing it away.