PC.
Before this, I would just mindlessly play consoles and never think about game beyond just something to play.
I also didn't have much money to buy games before I was old enough to buy my own PC.
Of course I played tons of video games, at least every single game I could get my hands on.
But at the time buying a "worthy" gaming PC fully built and ready to go was far too expensive for me or my parents to help out with, so my only resort was to build it on my own.
The first game to get me interested in building my first PC was the original Far Cry. It was probably around 2009 that I discovered the game existed and I thought the screenshots still looked fantastic, but was heartbroken to find out it was a PC only title.
So after a pretty successful birthday that year and amassing a couple hundreds dollars, I bought a refurbished Dell PC from Amazon. I can't exactly remember how much it cost, but I do remember it had an Intel 3.4Ghz dual-core, 4GB of RAM, and a 120GB HD. And the graphics card was a GT 430. That I didn't get until a year later. Yeah, before that I bought a cheap Nvidia card that I can't remember the name of. Ran Far Cry pretty well, but then I discovered Crysis on the PC, and that ate my original graphics card for dinner.
It was at this point I started to get a grasp on the concept of hardware and how different each piece really is. I took classes in junior high based on computers and learned a wealth of information that I otherwise would have remained ignorant to.
In a way I almost regret it since I either get asked repeatedly to fix my families tech woes, or I volunteer myself, annoyed, because I can't bear to see my friends struggle with computers due to their ignorance.