Building family computer w leftover parts (already have GPU, memory, PSU)

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http://forums.anandtech.com – I have a few extra parts so I was thinking about building a family computer with them. I have: GPU: EVGA GTX 560 Ti Crysis edition Memory: OCZ Platinum 3 x 2GB DDR3 1600 (PC3 12800) PSU: Seagate 600w misc other things such as wifi card, monitor, keyboard/mouse, etc I could really use some help picking out some decent parts, especially the mobo + proc that will support the memory I already have. Thank you! (Hardware)