I was eying this cheap card for my low end PC that I use for random low end gaming and other things, and my old radeon hd 6770 1gb gddr5 just ain't cutting it anymore. I just need a nice low end card that's a little better than the one I have and this card fit the picture perfectly. I'm not asking for card selection advice, but just simple questions. Since this card is advertised as a PCIe 3.0 card will it be compatible and work just as well in my sand bridge mo-bo's PCIe 2.0 slot? Also theres no power rating or recommenced PSU, If I remember correctly my PSU is 450w and my 6770 never had any power related issues, and uses a 6-pin connector just like this card. Any and all help will be greatly appreciated!