How much do you have to blow on the breathalyzer to get dwi?

In most states, 0.08 grams (per a certain quantity of blood) is the standard for an automatic DUI / DWI regardless of how well you were driving or how you did on the field sobriety tests. But in many states you CAN get a drunk driving or impaired driving conviction for LESS THAN 0.08, if you had some alcohol in your blood (let's say 0.05 grams) combined with a car crash (shows you were not capable of driving safely) combined with witnesses who say you sounded drunk, acted drunk, smelled drunk, etc.