New
#21
That would also happen to be this OP,
https://www.sevenforums.com/graphic-c...gtx-480-a.html
and had the questions answered with regards to how much space needs to be available in the case for the card to fit, and that he will need a new power supply.
And to answer the question from here,
https://www.sevenforums.com/graphic-c...hd-5770-a.html
the card is ~8.5" long, so will need at least that much from the back panel to the drive cage, and you will still need a new power supply for the 5770.