Ill tell you what I'm running. Cost me 1800. But I have two graphic cards.
Operating system is Windows7
My CPU is: Intel® Core i7-4790K CPU @ 4.00GHz (8 CPUs), ~4.0GHz
two Nvidia 750 Ti's
16 GB ram Both are Vengence.
For Harddrive I have a SSD 500GB Samsung Evo
Mother board is ASrock Z97 Extreme
I have a corsair liquid cooling in it. I believe it is H-60
I have a 1000 Roswell power supply.
I think that wraps it up. My case that holds it all is a Thermaltake Level 10 GT (Snow Edition) It really has alot of room to work with, and will be awesome with future upgrades.
I hope this all helps. With case and monitor cost me 2000.00$$