I'm sure my PC would do fine with what I currently have in it, but I'm buying a new PC within the month, mainly to get something that's more future proof and able to be upgraded in small amounts instead of having to buy a new PC the whole time. Prepping for Shogun 2 Total War :3 The only reason I think I'd buy this on the 360 is to play with a few friends, but it's only 2 person co-op so no real need, plenty of people on PC.
Did you see the gameplay graphics? I know Valve have been know for making brilliant specs but looking at those graphics, along with the fact its comming out in 2011 makes me wonder if I need a upgrade.
Not making a new one for this, It's more to prep for Shogun 2, which I'll need something new to run that on xD But as Gman said, the graphics on Portal 2 looked great for a source game, so it's assumed they're moving forward in tech with the engine; which may require a bit more from a computer, no big deal if people want to upgrade.
According to Teddi, my computer is already some kind of superbeing since it's running things it shouldn't even be able to. I'd say an upgrade is in order either way.
Instead of making a new thread, I'll bump with a new relevant video of co-op gameplay. http://www.gametrailers.com/video/pax-10-portal-2/704062 and here's another, from a different session. [youtube]CBMN9Q4ykhA[/youtube]