Technology whiz kids are called geeks in the tech world.
Geeks are of various types. One kind is where the geek has multiple Linux builds on multiple hard drive spaces. HE can simultaneously code in 5 plus languages while listening to his favorite music.
Another kind are the not technically qualified but have immense knowledge of the latest technology. Women fashionistas who invented a famous style of clothing before anyone else, but are totally into the tech world.
Gaming addicts are another kind of geeks. Another variety is the science fiction geeks. Pop-culture geeks are very common among the fairer gender.