Feel free to give advice on this build or what you think would be better. I am trying to keep it under $800... Should I go dual gpu or jus get a better single gpu, do i need a 700 watt psu (only chose it b/c it gave the most for the money). Btw I plan on playing FF XIV mostly, on low res(my hdtv 720p) and high res(1080p monitor).
2x HD 5770 1gb GPU
700 Watt PSU
8 gbs DDR3 1600 oc memory
AMD Athlon x3 440 (Plan on unlocking 4th core)
AMD 870 mobo
Windows 7 64bit
all ready have optical and hard drives
The 700W PSU is overkill for The 2xHD 5770 as 600 watt with two 6 pin connectors will be needed for crossfire.I think the only AMD 870 you can get for friendly Xfire layer(x8/x8) is the ASRock 870 EXTREME3.As for the +1 core unlock on the CPU you should know that there is a big chance that it will never happen.You can cut some Memory budget for a better CPU like the 955 BE or Phenom II X3 720 Black Edition .For the GPu i would rather go for single HD 5850 as it is more futureproof and since you will be running a (x8/x8) this would be more recommended. You can always Xfire the HD 5850 in the future but be aware that you will need 650 watt PSU with four 6 pin connectors to run crossfire.
Depends you need for Radeon HD 5770 a 450 watt PSU with one 75 watt 6 pin PCI Express connector, but could be run on a quality 400 watt PSU. 600 watt with two 6 pin connectors will be needed for crossfire.
If you go for the HD5830/50 you need a 500watt PSU with two 75 watt 6 pin PCI express connectors for a single card.For Xfire you can run them on a good quality 600W PSU but a 650W PSU is recommended for head room.