CS PhDs are normally 4-5 years long. I powered through bachelors to PhD in 7 years (the short duration mostly motivated on keeping costs down). What you are des

CS PhDs are normally 4-5 years long. I powered through bachelors to PhD in 7 years (the short duration mostly motivated on keeping costs down). What you are describing is possible. I'm not convinced it is the best idea. A strong CS university undergrad may be 95% redundant, but that 5% matters. I expect your colleagues with degrees might have gotten less from their educations then you might in the same classrooms. We teach a lot more than people actually seem to remember. Don't discount going back for the bachelors. It might be worth it. A lot of your classwork for your PhD will be forcing you to take many of the same classes anyway.