Here's a quick setup from Amazon:
1 SeaSonic Platinum PLATINUM-860 ; SS-860XP2 Power Supply $164.99
1 Fractal Design Define R4 Cases, Black Pearl (FD-CA-DEF-R4-BL) by Fractal Design $84.99
1 EVGA GTX 980 SC ACX 2.0 4GB GDDR5 Graphics Card $554.99
1 WD Red 3 TB NAS Hard Drive: 3.5 Inch, SATA III, 64 MB Cache - WD30EFRX $114.00
1 Samsung SATA 1.5 Gb-s Optical Drive, Black SH-224DB/BEBE $20.15
Microsoft Windows 8.1 - Full Version by Microsoft $104.46
1 Intel Core i5-4460 Processor 3.5 GHz LGA 1150 $189
1 Cooler Master Hyper 212 EVO - CPU Cooler with 120mm PWM Fan (RR-212E-20PK-R2) $35.41
1 Arctic Silver 5 Thermal Compound 3.5 Grams $7.81
1 Kingston HyperX FURY 16GB Kit (2x8GB) 1866MHz DDR3 CL10 DIMM - White (HX318C10FWK2/16) $139.79
1 ASUS Z97-A ATX DDR3 2600 LGA 1150 Motherboards Z97-A by Asus $144.99
For less than 1600 bucks you get a killer system. This setup will murder the i7/Radeon 280 Xfire system and I even squeezed a legal OS to the price.
Then if you want an SSD, the motherboard has an M2 PCI-express port for an M2 PCI-E SSD card. You get 10Gbps connectivity for superior i/o compared to SATA drives.
Add another 260 bucks for Samsung XP941 256GB PCIe M.2 SSD MZHPU256HCGL
I'm a big fan of the Fractal Design boxes. I love the simplistic look and the features are not bad either:
https://www.youtube.com/watch?v=T5a5ZjF986MThe R5 case is even more impressive but at extra 30 bucks:
https://www.youtube.com/watch?v=SRZIdbdcIiU