i'm not sure your gpu is a good choice. i would consider the ati 5770, i think it's worth the extra money. it's much faster, of course, and also supports dx11. it's also quieter and uses much less power at idle and at load.
what res will you be running at? that could help with the decision, although if you're only playing wow the 5770 will be enough to run at very high res with all details max'd, it's a relatively old and well-optimized game.
The RAM you are planning on buying now will run in single channel mode if all is used. Single channel is slow compared to dual channel, so my suggestion is to look for a 4GB set. If you really want to use 6GB then it would be advisable to go for an i7-930 system, altho that will cost a lot more than an AMD Phenom II X4 system.
That motherboard is not worth crossfiring on. This is the same price: Asus M4A79XTD EVO and is.
For a power supply to power two 5770s you need one that can reliably supply between 450 and 500 watts. From what I looked at on Compusa, this is the least expensive one that can provide the amount of power you need (it can actually supply more than you need, but with this you have a chance of being able to take it to your next build, or power more power hungry cards) and is a reliable one XFX P1-650X-CAG9 650W XXX Edition Modular Power Supply - ATX, 650-Watt, Modular, 80 Plus Bronze $70
I noticed that you haven't stated a budget. Are you looking for recommendations for other parts?
Thanks SIlvune, I am looking to spend about $1000 and any recommendations or advice is more than welcome. I built a system about 4 years ago but that was mostly with a friends help, this is my first solo build. I am looking for as much feedback as possible, thanks.
OCZ Stealthxstream 700W and 7200.12 500 GB $114.98 http://www.newegg.com/Product/ComboDealDetails.aspx?Ite...
The OCZ PSU is a solid PSU for a low price. It'll handle xfire 5850's no prob. Spinpoint F3's are sold out ATM, but the 7200.12 comes comboed for a nice discount and has about the same performance for the same price.