Hi, I just bought this desktop and I am wondering whether ATI 5770 fits my system or not? ATI 5770 uses GDRR5 but it seems my motherboard doesn't support that. So I am really confused here. Wish someone can help.... My computer info is as follows: Motherboard: Foxconn H-RS780-uATX HP: Aloe-GL8E PCI Express x16: 1PCI Express x1: 3PCI Express x1 minicard socket: 1 Processor: AMD Athlon(TM) X4 635 quad-core processor [2.9GHz, 6GB] Memory: 6 GB (3 x 2 GB) DDR3 PC3-10600 (message as PC3-8500) I am happy to provide more info if needed. Thanks in advance.