The dates don't match the description; from the (last, more specific) description, you'd need to drop back at least about 5, maybe closer to 10, years earlier on the start date for that "generation".
Really, just thinking of it as "members of Generation X with an early and lifelong interest in technology" would probably work better than trying to carve it out as a narrower subset of Gen X by age.
Really, just thinking of it as "members of Generation X with an early and lifelong interest in technology" would probably work better than trying to carve it out as a narrower subset of Gen X by age.