Currently the only thing that comes close to 1mh for scrypt is a 290x and I don't think it will even hit that. Anything that is rated at gh or higher is for bitcoins. I wouldn't waste my money on buying equipment for mining bitcoins. At this point, you would need hundreds of thousands of dollars to make a return. With gpus, you can at least resell them or use them for video games. If you have that much money, then invest it in something else.