For GFX cards, I would recommend looking for a "power" listing (basically, best to worst in terms of how much vertices and textels it can push) and pick a middle ground. (PC Gamer might have one for 2014 around, I used one for 2012 or earlier and picked out a 650 Ti priced at $200 USD. (ZOTEC if you're wondering.)
An ASUS Rock is one I use in this box right now, so I recommend that line as well. Corsair also make great DDR3 sticks at decent prices. All in all, not counting the monitor, box, and DVD-R drive, I think I spent $900 USD on an overhaul when my board shorted out and took half the box with it. The only thing that's noisy on the box is the HDD drive that I had to get to replace my failing main drive--don't get Western Digital these days.