Nvidia has been riding high on its incredibly successful 780i chipset motherboards, and 8- and 9-series graphics cards - but there may be trouble in paradise. Nvidia's new 790i chipset, which offers native support for DDR3 memory and Intel's 45nm quad-core CPU's, can apparently corrupt system data on overclocked PC's using certain high-performance DDR3 memory modules. While it is unknown how many 790i motherboards are affected, Nvidia engineers are already hard at work crafting a BIOS-based fix to an embarrassing malfunction on its flagship platform.