Trenchcoat :
Should work no problem. That GFX draws it's power from the motherboard so it's a simple case of plug, update and play.
Youtube is your friend so have a look at the guides out there.
Thanks so much, 2 replies in less than a minute. I didnt expect that. Even if the 450w wasnt that model would it matter without ruining the components as well. Just trying to be thorough