It's usually up to the manufacturer to decide whether it's a good choice or not. nVIDIA simply licenses the 6600 GT design to other companies like BFG Tech, MSI, ASUS etc. It's up to those companies to decide what to add. That's why you never seen nVIDIA come out with their own cards like ATI does. For example, ASUS makes some really nice cards, they're expensive, but they have lots of features and additional things that other companies don't have. I was only recently with the G70 that nVIDIA decided to manufacture it themselves and just sell it to companies to put their stickers and labels on it. That's why most of the 7800 GTX's has that heatsink with the nVIDIA Eye logo on it.