You can grow from a niche channel to a wider viewership by having some of the common how to videos (ALA Linus Tech Tips). More IN DEPTH advanced videos on overclocking particular processors, chipset series, and building cooling solutions are not being found out there that I am aware of. If you took a comprehensive treatment of a topic and broke it down into a SERIES published in 10-12-15 minute parts you would have more hits from casual tech viewers and enthusiasts who may not initially be committed to clicking on an hour or longer video. This would really build your niche segment and distinguish your channel from all the me too "tech channels". I am interested in such advanced information.