Hi guys! So I have to order a new GPU because my 7870XT's fan is failing and I had my eye on the Sapphire R9 280 Dual-X. It says you need a 500 watt power supply which I have (Rosewill Green Series 530w 80 Plus Bronze) but on a lot of the other 280s they say you need a 750 watt power supply. So, am I good to have this card? I just wanted to check before I ordered it haha.