I currently have a gtx 1050 and I saw an offer in the used market where the seller offers a r9 280x for a gtx 1050. I dont have a psu strong enough for r9 280x but i have 50$ that i could spend on a 650w psu. my question is- is it worth it? is the 50$ and the "struggle" justified by the performance? should i even consider a r9 280x? what should i know about the r9 280x?