This is my current rig it has a micro atx board because I upgraded in steps and my old case was a micro case.
Case Antec One Illusion
i5-3570k stock speed still working on voltages
Coolermaster Hyper 212+ 120mm Cooling on CPU
Asrock z77 pro 4-m mobo
Thermaltake TR2 430 watt PSU
2x4gb Corsair Vengeance 1600 ram
OCZ Vertex 90gb ssd
Western Digital Cavier Black 1tb HDD
Sapphire ATI 5830 HD (picked up for only $40 so I said "why not?") also thinking maybe I should move that down to the bottom slot.