I thought it were a good Idea to share my build with you.
I use it mostly for Gaming and sometimes a little Video Editing.
Roccat Kone Pure
Roccat Ryos MK Pro
2x 21,5″ BenQ2255
Intel Core i5-4570 @3.2GHz (Quad-Core)
8GB RAM Corsair Vengance, Low Profile (to fit a Mugen 4 CPU cooler)
250GB Samsung SSD, 3TB Western Digital Green, 1TB Western Digital 2,5" out of some external HDD
Sapphire Radeon R9 280X Vapor-X 3GB
It runs very quiet when not on load and on full load it runs acceptably quietisch, which is very nice.
Total cost is something around 1700€..