What other computer pieces should i get

[L33TH4XXZ0R]

Hello, i have the Intel core i7, AMD Radeon™ HD 6990 Graphics 16gb Corsair Vengeance as ram, i dont know what other pieces to get

 

[swilczak]

Probably intel 1155 socket motherboard, a solid state drive, a computer mid or full size tower case, a 750 watt or greater silver gold or platinum certified power supply, a copy of windows 7 pro or ultimate, maybe some fans for the case and a sata blu ray or dvd drive

 

[Spaniard United]

If you're building a computer from scratch, you need a:

-Case (and/with fans)
-Power supply (750W or more with two 8-pin connectors)
-Motherboard (support for i7, RAM type and speed, at least 1 PCIE 2.0 or 3.0 x16)
-Hard drive (possibly a SSD for operating system)
-Disk drive (motherboard drivers, other install disks)
-Card reader (optional)
-Monitor (dealer's choice there, depends on the setup you want)

From the components you listed above, I would wager you're wanting to build a powerful PC, but without any further information on what you have, what you're wanting, and how much money you have to work with, it is hard to be any more specific than I was.