Hello everyone, I have a quick question.
Ok so i have 2 graphics cards, one that clocks at 600watts and the other is 300watts. Do i need to get a 1000watt power supply to have them both work to increase gaming performance?
No you don't need a 1000 Watt PSU.
The numbers you have quoted are probably manufacturers recommended specs and are over stated . The GTX 550 needs a single power cable and the other card does not need one at all.
So i would say any decent PSU with a PCIE cable or two rated at around 34Amps should be good enough. I would look at something around 600 watts.