@OP while there is nothing exactly wrong with your build, its going to be way overkill for your needs. If you are just dying to spend your money go for it, otherwise a cheaper build, such as the one random posted, is going to plenty. In fact, you could probably be just fine dropping your graphics card down to a gtx 770.

This is much better suited to your needs. That motherboard is not worth 300 dollars. You don't need 16GB of RAM or an i7 for gaming. You don't need a 780ti for only 1080p. You don't need a full-tower case or a 1000W PSU.
PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i5-4670K 3.4GHz Quad-Core Processor ($227.99 @ NCIX US)
CPU Cooler: Noctua NH-D14 65.0 CFM CPU Cooler ($71.99 @ Mwave)
Motherboard: ASRock Z87 Extreme4 ATX LGA1150 Motherboard ($124.99 @ Newegg)
Memory: Team Vulcan 8GB (2 x 4GB) DDR3-1600 Memory ($61.99 @ Newegg)
Storage: Samsung 840 EVO 250GB 2.5" Solid State Disk ($139.99 @ Amazon)
Storage: Seagate Barracuda 3TB 3.5" 7200RPM Internal Hard Drive ($104.99 @ NCIX US)
Video Card: MSI GeForce GTX 780 3GB Video Card ($449.99 @ Newegg)
Case: Corsair 400R ATX Mid Tower Case ($69.99 @ NCIX US)
Power Supply: EVGA 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($129.99 @ NCIX US)
Operating System: Microsoft Windows 8.1 (OEM) (64-bit) ($89.98 @ OutletPC)
Total: $1471.89
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-04-06 14:06 EDT-0400)

Well, if you're just using it for gaming, then go with the i5-4670k. It gets the same performance in games as the i7-4770k. But is also a lot cheaper. I'd also stay with the 780ti, if you can afford it. (More of a bragging right :b)

Also, @chrix12, adding another 2gb card, to one that already has 2gb, will not total out to 4gb. It's not like ram, it will stay at two, you'll just have 2, 2GB video cards.

What is this build for? You don't need a 780ti unless you are doing 4k/1440p or three 1080p monitors.

Instead of getting 780 Ti, I would SLI 2x GTX 770. You'll have total of 4GB memory (1GB more) and more hz (up from the 875Mhz to 2x 1.06Ghz and can be overclocked) for slighly less price. I don't thnk the Ti can be overclocked.

Also add an SSD for OS to speed us the system (not more performance though).

You don't need 1000W. Even 850W is more than enough to SLI 2 GTX 770.

PCPartPicker part list: http://pcpartpicker.com/p/3mXY5
Price breakdown by merchant: http://pcpartpicker.com/p/3mXY5/by_merchant/
Benchmarks: http://pcpartpicker.com/p/3mXY5/benchmarks/

CPU: Intel Core i7-4770K 3.5GHz Quad-Core Processor ($319.99 @ Amazon)
CPU Cooler: Corsair H100i 77.0 CFM Liquid CPU Cooler ($94.99 @ Newegg)
Motherboard: Asus Maximus VI Formula ATX LGA1150 Motherboard ($299.79 @ Amazon)
Memory: Corsair Vengeance Pro 16GB (2 x 8GB) DDR3-1866 Memory ($144.99 @ Newegg)
Storage: Kingston HyperX 3K 120GB 2.5" Solid State Disk ($80.99 @ Amazon)
Storage: Seagate Barracuda 3TB 3.5" 7200RPM Internal Hard Drive ($104.99 @ NCIX US)
Video Card: Asus GeForce GTX 770 2GB Video Card (2-Way SLI) ($329.99 @ Newegg)
Video Card: Asus GeForce GTX 770 2GB Video Card (2-Way SLI) ($329.99 @ Newegg)
Case: Thermaltake Overseer RX-I ATX Full Tower Case ($129.99 @ TigerDirect)
Power Supply: Thermaltake 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($137.68 @ Mwave)
Optical Drive: LG WH14NS40 Blu-Ray/DVD/CD Writer ($66.99 @ Amazon)
Operating System: Microsoft Windows 8.1 Pro (OEM) (64-bit) ($135.74 @ B&H)
Total: $2176.12
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-04-06 10:53 EDT-0400)

But do you really need this kind of system? What do you use it for?

IDK! Is It Good????

very Nice as i see, but from my impression you could push down the motherboard a bit, as long it supports the ram speed and type, and of course the CPU.