SYSTEM USAGE FROM MOST TO LEAST IMPORTANT: The system will be an AV control center for a church. As such, below are it's primary usages:
1. Presentation Software and web-based HD (720) videos to a new projector and 23” monitor
2. Basic audio provided to a mixer
3. Some Digital Video editing
4. Limited Multi-tasking and no gaming
PARTS NOT REQUIRED: Keyboard, speakers
PREFERRED WEBSITE(S) FOR PARTS: newegg.com
1. Antec case (if not cost prohibitive)
2. 23” Monitor
3. It would be great if the Video Card could outputs to 3 devices at the same time (primary monitor, secondary monitor, and a projector that replicates the secondary monitor)
4. Planning on using Windows 7
5. 2x Hard Drives in Raid 1 for data redundancy (at least 300 GB)
SLI OR CROSSFIRE: Only if it will expand the options for adding a second monitor (in addition to the primary monitor and projector)
MONITOR RESOLUTION: Monitor Max would be: 1920x1080. Projector Max would be 1280x800
ADDITIONAL COMMENTS: I am still coming up to speed on how to get the best video quality to the projector (~50 feet away). An existing VGA cable is at a drop but I can run something different if needed. Will The VGA cable restrict the capabilities of a projector like the one below? http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Cant give much advice on parts specifically. Id go for a cheap system, SLI motherboard (sorry 1video card will only do 2 screens at a time so you will need 2 video cards.) Go for a light dual core processor. that's all you will need. 2gb ram as usual, for video card since there will be no gaming I recommend getting 2 simple cards that are power efficient.
From your post I presume that you have sufficient knowledge about configuring a system, so good luck for part hunting.
Any further questions, just ask
Otherwise, you could get a motherboard with onboard video, and one loose video card, (not needing SLI board then). That might save some money. One bugger is though that performance will be different on the screens, (onboard vs PCIE), but since you wont be gaming you probably wont notice a difference at all.
Further, Nice Projector. VGA will be limited, I do believe that it will still work at 50 feet, but that it will be rather unpractical to stretch 50feet of VGA cable (they are pretty thick) through a church. You could consider composite video, (tulip at both ends) but im not sure if you can get that resolution through there. (I believe composite does only 480P but im not sure)
What IH8U said, i believe that system is overdone, Video card, ram, Looks more like a gaming rig. I do agree with his processor choice and the comment about no raid, and doing frequent backups.
The build I posted is more of an HTPC build, It's an updated 780G board with an ATI 4200 onboard instead of the 3200. The secondary vid card was added since he wanted to display to 3 monitors at once. You might be able to do 3 with the onboard, but 1 of those needs to have an HDMI input.
over good build from Ih8u, but unless you need to put this on an audio rack there is probably no need to get a HT case. It will be cramped and hard to work with. I would go with something that is a little roomier, cooler, and quiet. Something like this http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Just don't turn on the hybrid crossfire (disable it), and it'll work like 2 cards. Usually most churches use an AV rack, that's why I listed that case. However an Antec 300, and a decent Antec PSU (the earthwatts EA380 comes to mind) won't set you back much more than what I listed.