hackingman :
you should always have double the efective power if you want to stay safe
If it's a cheap PSU, then I agree. However, when someone already has a PSU which is larger than required, I'm not going to tell them to get an even larger one if I don't know the quality of the unit they already have.....especially when they list their current GPU as an R9 270X, which requires more power than the GTX 970 they are looking at getting.