I have recently bought the MSI Radeon R9 290 and realised that it is very power hungry and can't run with my Corsair CX600 power supply. It often makes my pc reboot and I cannot play many without it restarting randomly. Should I just sell the 290 and get a different gpu like the 750 ti, 760 or 960. I was just wondering this because I just wasted £200 on a gpu that wont work with my pc and I can't get a new power supply for another 2 months. What should I do?