I am looking for a case which will fit the HD 5770. I specifically wish it to be horizontal. I just called up the dealer whom I generally utilize and they that Silverstone Grandia GD01S-R Silver ATX HTPC Case ought to be huge enough, however we are aware how sales assistants are like and they would do anything to conceal the matter.What do you feel guys. Can someone give me a detailed information along with the specifications for the case. Is it indeed the best alternative available. Do reply people. Thanks in advance. Take Care.