[SOLVED] Can i use myy gpu without buying a new psu?

Apr 2, 2020
hello, i recently bought an r9 290 because pcpartpicker said that its compatible with my setup (https://pcpartpicker.com/list/YXKP9G). But when i got it, i found out that my gpu needs 3 6-pin connectors and my psu only has one. Is there a way that i can use my gpu without buying a new psu?
R9 290 recommended PSU is 750W.
You have 450W PSU. Obviously it is too weak for this power hungry graphics card.

So - no. New PSU is absolutely necessary. Or get a different GPU.