SYSTEM USAGE FROM MOST TO LEAST IMPORTANT: Gaming,multitasking with dual monitors.
PARTS NOT REQUIRED: keyboard, mouse, monitor, speakers, OS
PREFERRED WEBSITE(S) FOR PARTS: Newegg
PARTS PREFERENCES: by brand or type (e.g.: I would like to use an AMD CPU & Biostar mobo with a 24" LCD and full tower case)
MONITOR RESOLUTION: Currently running a 1680x1050 may get a 1080P and use the 1680 as a secondary.
Alright, I was looking to build a new computer, there's a few things I want. a i5-750 that I will attempt to overclock close to 4GHz on a mugen 2 cooler. 8GB of DDR3 1600 RAM, A large hard drive 1.5TB,The ability to run 2 monitors for more screen real-estate.
The big question is about video cards, Is crossfire and eyefinity support now? Can I run 2 monitors on crossfired 5770s? I heard there was going to be a new update to make it possible maybe, but that was months and months ago. If it's possible I know the i5 has a limitation of only supporting x8 bandwith. Would this limit the cards in any way. If not 5830 or 5850 to game at 1080P smoothly
I'll point out some problems with the i5. First is the price. If you wen t with an AMD X4 955 build (which has comparable gaming power), you'd save a good $100. Second is the fact that the LGA1156 socket is going away soon. You won't have an upgrade path.
With that said, I'll answer some of your other questions before posting a build with what I'm guessing is the budget.
RAM: You don't need 8 GB of RAM unless you're doing heavy encoding/rendering. If that were the case, you should probably be looking at trying to get an i7-930 instead of an i5.
Crossfire: You don't need Crossfire for dual monitors. It's also not recommended to start a build with two video cards, as it uses more power and eliminates and upgrade path.
8x: This makes no difference. It's 4% compared to 16x/16x, and only noticeable with dual 5970s.
5830/5850: The 5830 is a very bad choice. It's not much more powerful than the 5770 (i.e. can't game at 1080p), yet costs a lot more. Generally, you should either step up to the 5850 or down to the 5770. The 5850 can game well at 1080p
So here's the build (guessing $900 is the budget):
I agree with the 5830 not being a very good card, although I'd go for a Phenom 955 here as you might need a bit more cpu power for your multitasking (as to me it sounds like there's also an emphasis on non-gaming performance too)