Neutron GTX 240GB + Crucial M4 128gb + 2TB Seagate 7200 rpm
16GB G Skill 1600mhz
ODAC + O2 Amp + Sennheiser HD 598 + KRK Rokit 5
Went from a i5 2500k because I wanted moar threads for work stuff, same reason for going from 8 to 16 gigs (going for 32 as soon as I can). Obviously great for gaming too. Pretty happy and will start messing with OCing that i7 soon enough.