Actually, no. There have been several reviews that show you don't take a realistic performance drop a card until you hit 4x on the PCIe lane. The difference between 8x and 16x for SLI/Crossfire is non-existant unless you have 2 $400 plus cards.
I see. I have a difficult time finding benchmarks on line that show my card, usually older cards or better cards. I guess my conclusion that the difference was > i5 750 vs. 1055t was mostly inference.
For gaming, i5 750, P II 955, i7 860 are all about the same in performance and your GPU's power is the primary deciding factor. I would not go with the P II 550. While it can hold its own, it will limit the Crossfire/SLI setup. If you are on a budget, get the Athlon X4 620 and OC it a bit or Phenom II X3 720. If you can spend a little more, the Phenom II 955 and i5 750 are the best bang for your buck offers for gaming hands down.
Two reasons for the $80 550 ... a. it can possibly turn into a B50 x4 and b. for the $100 + savings I could get my second 4890 right away.
Do you think 2x 4890 + 550 dual core < 1x 4890 + 965 quad core in terms of fps?
Of course if I get the 635 I could probably get both as it's close in price to the 550 ...
Thanks.
Funny thing is, when I'm actually playing the game, I'm less worried about high resolution etc. and more into the action...I could just turn down the resolution and increase the fps that way ....