Aye, the sector of gaming that demands advanced PC hardware (in the form of graphics cards/GPU's), and the know-how to install them, is definitely male-dominated. That relates to the stereotype you mentioned in the first post about computer programmers being male. It's absolutely true that most computer-literate people are male. My betrothed (who is in my avatar beside me, BTW) graduated from an IT tech school and is a certified Adobe instructor... but is clueless about PC hardware.

However, for every dude with an Xbox 360 or a gaming-class PC, there are probably 5 women (ranging from teenagers to housewives and beyond) who play Wii games with their kids, Farmville on Facebook, or really simple stuff like that. Thus, as a whole there are more female gamers than male... but the high-end or "hardcore" game market is still male-dominated.