New crunching / home office rig, built December 2014.
The Fractal Design Define R4 Blackout is a great case for a powerful home office computer - it's great looking, quiet, with plenty of room for components and airflow.
I chose the i7-4790K based on recommendations from other BOINC crunchers and its performance per watt. The other components are selected based on highest performance, efficiency, quality and expected longevity for the dollar.
1/13/2015 Replaced HD 7970 with EVGA GTX 970 SSC + GTX 750 Ti FTW
1/26/2015 Replaced CM Hyper 212 Evo with NZXT Kraken X41 AIO Liquid Cooler
1/26/2015 Replaced Corsair Vengeance DDR3-1600 C9 with G.SKILL Ripjaws X DDR3-1600 C8
4/22/2015 Replaced EVGA SuperNOVA NEX650G with EVGA SuperNOVA 750 G2
4/22/2015 Replaced EVGA 750 Ti FTW with EVGA GTX 970 SSC ACX 2.0