Thats a lot to go over. However low ripple means "steady" or "clean" power. High ripple means "rough" or "dirty" power. It leads to instability and degradation of components. All PC's are designed to take some ripple. Its not the end all. But its something that can be a real pain in the butt if you start OCing and such.........which you will if you stay on TPU. Why "compete" when you can just buy a decent Seasonic?