I have two ASUS 4850 TOP in CF. Can I safely install and use ATI's driver instead of using ASUS's? ASUS drivers are way behind (latest version is 8.5, while ATI is 9.1), but I'm just wondering if ATI's driver is compatible with this particular ASUS version of 4850, being overclocked at 680Mhz compared to 625Mhz being stock.