The GameXStream is not to say "bad" but the rails are not stable for a PSU that high quality. Depending on the system and if they like to run the 600w close to full load (which is a little hard) the ripples on the 12's won't matter much but still. The ripples on them are around negative 3-6% which is not very good for a "high quality" PSU as you know. This is why I don't like them.