Leaderboard

Rather than guessing you could just take a ruler and measure the length of your case from the backplate to the drive bay to determine how long a card would fit.... quickly looking online the longest GTX 560 I could find was 9.4" the shortest was 8.2"; it all depends on the manufacturer. When I did this with my GTX275 my estimate was accurate to within a quarter of an inch and my card was 3/4 inch away from the end of my case. As for the PSU, 450W likely (almost certainly) won't cut it especially if it was cheap to begin with. The GTX 560 isn't a huge power hog but you still should have at least 550-600W minimum for a card like that.