Build planning advice 2

[ZmanFTW]

Cooler Master HAF XM (owned)
AcoustiPack ULTIMATE Professional Sound Dampening Pack
Sunbeam Rheosmart 6 Fan Controller (owned)
Corsair 140mm Quiet Purple LED Case Fans (x5)
EVGA SuperNova G2 750W Power Supply
ASUS Z97-PRO Wi-Fi ac LGA 1150 Intel Z97 Motherboard
Intel Core i7-4790K Haswell Quad-Core 4.0GHz LGA 1150 Desktop Processor
NZXT Kraken X61 RL-KRX61-01 280mm All-In-One Liquid CPU Cooling Solution
Corsair 140mm Static Pressure Purple LED Fans (x4)
G.SKILL Ripjaws Z Series 16GB (4 x 4GB) DDR3 1600 @ Cas 7
SAMSUNG XP941 M.2 256GB PCIe x4 Gen2 5Gb/s MLC SSD
Samsung 850 Pro 1TB SATA III SSD
ASUS Blu-Ray ROM Drive (owned)
Microsoft Windows 8.1 Professional Full Version
ASUS GTX780-DC2OC-3GD5 GeForce GTX 780 3GB 384-Bit Video Card
ASUS Xonar Essence STX 24-bit 192KHz PCI Express x1 Sound Card
Logitech Z-5500 THX-Certified 5.1 Digital Surround Sound Speaker System (want bettter/louder/similar cost)

[PokémonTrainerFour]

290X > 780.

[ZmanFTW]

290X > 780.

 

Yeah thanks but it's actually going to be the GTX 880 but if I put that then I am impractical!