So, I ordered these parts yesterday:
Item Price
Gigabyte Z87X-OC, ATX 163,79€
Intel Core i7-4790K, LGA1150 300,95€
16GB Kit Crucial Ballistix Sport Series DDR3-1600, CL9 125,53€
Crucial MX100 SSD 256GB, 2.5" 89,64€
Corsair Hydro Series H60 62,99€
TOTAL 742,88€
And at first I was sure...