+1 to what mfenn's said, and then I would get one of these video cards, for some gaming:
http://www.newegg.com/Product/Produc...82E16814187129
http://www.newegg.com/Product/Produc...82E16814125328
P.S. Here's the best review I could find, using a recent WoW (note they add AA with higher res, as well):
http://www.techpowerup.com/reviews/NVIDIA/GeForce_GTS_450_SLI/18.html
Kind of a wash. The cheaper one is slower, the more expensive a little faster, yet both are likely to be CPU-limited (or monitor-limited) at 1080, and the Radeon will use a bit less power.
Both will be highly dependent on good air flow through the case, but that shouldn't be a problem with the R3.
Then, this CPU cooler:
http://www.newegg.com/Product/Produc...82E16835233082
At some point, if you want to quiet the fans down more, Scythe's Slipstream (sleeve bearing--wears out fastest, wears out quietly, and the fans are very quiet) and KAMA (fluid dynamic bearing--will last longer than you will have a use for it) are excellent. PWM fans have a 4-pin connector, and if used in a 4-pin port, can be controlled by the BIOS or software (such as Speedfan), giving more control over the cooling. Most mobos don't have many (sometimes only 1 for the CPU fan), so with all the mobos being recommended, if you want to do this in the future, see if any have 4-pin chassis fan ports.
For what you need, you will likely not need all the fans the case has available. You can run them slower (I think you'll need a linear fan controller, or be willing to hack on it a bit, for the included fans), or remove them (if doing so on an exhaust, tape the vent closed).
When and if you get to that point, begin lurking over
here.