I agree with ak47jar3d. Corsair is a good brand and 450 watts should be fine although I would consider it a bare minimum if you plan on taxing the video card on high end games. I have an EVGA GTX 960 and love how it runs silent in most games. The fan doesn't even spin up until it hits 60 degrees C and even then it is very quiet and doesn't use much power. I have never gotten the card over 70 degrees C. The GTX 480 it replaced was slower, would regularly hit 95 degrees C and would never run on a 450 watt power supply. If you plan on upgrading in the future or adding a second card I would recommend 750 to 850 watts as that will give you a lot of headroom for most configurations but for right now a good Corsair 450 watt power supply should be enough.