If you aren't going to upgrade the graphics card, then you only need around 350-450W.
A nice mATX case for a quiet build would be the Fractal Design Define Mini. Alternately an Antec NSK3480. The Antec comes with an EarthWatts 380W PSU which is reasonably quiet and would work for your proposed rig. Otherwise you would need a power supply. For a cheaper one that is reasonably quiet, look at the lower wattage Seasonic units, or Antec Neo Eco 400W, or XFX Core 450W. If you are willing to spend the money, Newegg has a fanless Seasonic 460W for around $100 after rebate.
BTW isn't the motherboard and RAM a bit overkill?
| CPU | Motherboard | Graphics | RAM |
|---|
| Core i7-2600K | Asus P8P67 Pro | GeForce GTX 560 Ti | 8GB DDR3 |
| Hard Drive | Optical Drive | OS | Monitor |
|---|
| Intel 120, TorqX 256, two Hitachi 3TB | Samsung DVDRW | Windows 7 Home Premium x64 | Samsung 305T Plus, Dell 2005FPW |
| Keyboard | Power | Case | Mouse |
|---|
| abs mechanical keyswitch | BFG EX-1000 | Lian Li PC-8FIR | Logitech MX518 |
| Mouse Pad |
|---|
| Everglide Giganta with a teflon C4 cover |
| View all |
hide details
| CPU | Motherboard | Graphics | RAM |
|---|
| Core i7-2600K | Asus P8P67 Pro | GeForce GTX 560 Ti | 8GB DDR3 |
| Hard Drive | Optical Drive | OS | Monitor |
|---|
| Intel 120, TorqX 256, two Hitachi 3TB | Samsung DVDRW | Windows 7 Home Premium x64 | Samsung 305T Plus, Dell 2005FPW |
| Keyboard | Power | Case | Mouse |
|---|
| abs mechanical keyswitch | BFG EX-1000 | Lian Li PC-8FIR | Logitech MX518 |
| Mouse Pad |
|---|
| Everglide Giganta with a teflon C4 cover |
| View all |
hide details