Broward said:
Man, call me simple or tech ignorant, but fuck a gaming PC. Video cards are how much? Not simple ones, the high end let me run Crysis kind. Oh wait, I need to have this awesome RAM to really speed it up..oh, it only works on this type of MoBo? Alright..wait! I need a kick ass soundcard too...there, spent a few hundred.
oh, I need a monitor...or, I can rearrange everything to hook it up to my TV.
oh, that awesome video card has issues with a certain game or OS? Oh.
Yeah, fuck that. Let me drop what I need to on my XB1, hook it up and not worry about shit for close to a decade.
Crysis 3 will run on a sub-$100 video card. Maybe not at the highest resolutions, or with all of the fancy shit turned on. But it would probably be comparable to current console performance. Probably a little better.
Generally speaking, RAM is RAM. Unless you want to get into overclocking or use an AMD APU (and you probably don't for a gaming machine), it won't matter. And just about everything these days uses DDR3.
If you're buying today—again, excepting the higher end—the only thing your motherboard wouldn't widely support is the CPU.
Most motherboards come with entirely adequate sound processing for most people.
It's maybe not ideal to hook it up to a TV, but there are smaller cases, wireless stuff, etc. Video and audio is just HDMI, like most things hooked up to the TV.
Video card and OS compatibility... Yeah, that happens. Not super often, I don't think. Usually has to do with running an old game on a new OS, or video card drivers not being fully optimized with brand new games. These days, a lot of that stuff will be updated automatically by Steam, or Windows Update.