Okay thanks for the replies

I found this on amazon.de: https://www.amazon.de/-/en/gp/product/B07B2LC8K3/ref=ox_sc_act_title_1?smid=A13ZJ94CYI3F7Y&psc=1
That will probably work... And what type of riser is good, a molex, pcie or sata powered one? What i'm thinking is that does my psu run out of molex connectors if the gpu's need power from them..