Yes, they fit well. What about power supply? Since you intend to run an AMD build with crossfire (judging by the "maybe"), strike out the EVGA GTS250. It will not do you any good as SLI is not supported on AMD chipsets. Instead, change to this card.
im only interested in crossfiring, i'm barely learning about this and i dont want to screw up by attempting anything more than that. that being said, i am interested in crossfiring but not right now, maybe in 6 months to a year from now. does that makes sense or will my system be too old for me to take advantage of the crossfire capabilities? will an upgrade be easy with this rig in the next 2-3 years?
will my system run americas army 3 with this new build?
Heres what I have come up with for your budget, hopefully you don't mind mail in rebates. If not I know you can easily shave off another $20 by cutting back on the ram a little bit which wouldn't really affect performance all that much.
Was quite wierd trying to cram a quad core CPU into such a budget while maintaining the possibility of crossfire latter on. I'm actually quite impressed with what I came up with, the deals I found was better than what I expected. I mean $190 in instant/combo savings another $30 in mail in, and a free game and tool kit.
Yes, most likely you can run the game max out. The HD5770 can take everything you throw at it even at higher resolutions like 1920x1080 and your processor is rock solid. So I'd say it's quite a good deal. However, if you intend on upgrading to a higher end graphics card later down the road (which is not necessary because you can always do crossfire, but just IF), do consider assassin32's recommended power supply. Anything higher than HD5770 requires 2x 6-pin connector. The OCZ you have chosen comes with exactly two. That means you can get (for example) a HD5870 and that's it. You can't crossfire (can use adapters but not recommended) even though you have a crossfire motherboard. Down to the end, the choice is yours.
But by the look of things, I'd say crossfire 5770 is pretty much future proof for at least 2 years at your resolution all the way up to 1920x1080