Case - Corsair Carbide 540 Air (twin chambers separating mobo, cards and components from PSU and HDDs - plus it's lower than my current Xigmatek case which has feet and top radiator cover removed to fit under desk)
Mobo - Gigabyte G1 Sniper Z97 (hate my current GB mobo so this better be all I expect,and more)
CPU - i5-4690K
Cooler - Corsair H100i water cooler
RAM - Corsair Vengeance 16 GB (2x8)
PSU - EVGA 650w G1
GPU - Asus R9 290X
Storage - 1x 256 GB SSD for OS, 1x 256 GB SSD for select games, 1x 2TB Seagate HDD for everyday storage (plus my current SSD/Sata drives will move across.
OS - I'll risk 10, but prepared to go back to 7 depending on experiences with 10
I plan on overclocking and just the single card for now but will up the power when I decide to crossfire. One step at a time.