I felt rather clueless trying to use that calculator but I googled what was the stock PSU in dimension 9100's and it came up as 375-400w I think.
I'd like to get the best bang for my buck but try and keep it under a $100. Also, is that powerful enough, or would I have to upgrade my power supply too?
I'll also be installing these components myself. Is this a difficult procedure? I don't want to go about buying something and end up messing it up due to user error. I'm fairly competent at following directions though, so I'm sure if I found a video or a step by step instructions It wouldn't be too much of a nightmare.
Thanks for the help guys.