What is Omghz?
1.
Pronounced "Oh my god that hurts" or "oh, my gigahertz" the former is used to express pain, the latter to express discontent with the load produced on your computer by an application or general excitement, if you're really a nerd.
"OMGHZ?! I just stubbed my toe!" or
"OMGHZ?! World of Warcraft just made my computer freeze!" or
"OMGHZ! The new 64-bit processor i got is awesome!
See