I can second Andy's statement here. There is a lot of testing that goes into any piece of hardware that flies for NASA. I am not directly involved in testing, but I have done initial radiation exposure estimates for some upcoming missions to help define likely dose rates for electronics.
You cannot simply take your refurbished Dell laptop up on the ISS. It dies very quickly. Never mind something that is going to get flown to Jupiter or Saturn and is mission critical. The assumptions about how advanced our every day electronics are has absolutely no direct correlation on the availability and quality of space quality electronics.