it is possible to build a PC that costs $300 but there is no way it will play like a PS3 or Xbox 360, or 2 of them squished together for a PS360. a PC for $300 would be only used for web browsing, video watching, office working, and old games playing ( CS:S or something ).
Oh, oh well, then. As a sidebar, how close could intel hd 2000 integrated graphics come to HD consoles? Would it even be able to play modern games on lowest settings? One could certainly do the $300 thing with integrated graphics like that.
The American dream is to live like a king while working as little as possible. Maybe that involves buying some land and living in a nice ass tent? Maybe it involves building a gaming pc for 300 bucks using troll science.
Console hardware is sold at a loss. Meaning it might cost them $500 to build a PS3 or Xbox 360, but they sell them to you at $300 or whatever the price is.
They make up for it through selling games. In the past console games were about $10 more than their PC version if the game was cross platform. Nowadays, it seems PC games has gone up about $10 so they cost the same as console games.
The graphics core in AMD's Llano APUs comes in two flavors; HD 6550D (A8 series only) and HD 6530D. The HD 6550D is about the equivalent to the desktop Radeon HD 5570, the HD 6530D is about equivalent to the desktop Radeon HD 5550.
As a comparison, the Intel HD 3000 graphics core found the "k" models of the Intel's 2nd generation of Core i5/i7 (Sandy Bridge) is a little more powerful than the desktop Radeon HD 5450. This is around 2x faster than their older GMA 4500MHD graphic core. Non "k" Sandy Bridge CPUs (i3/i5/i7) will have the slower Intel HD 2000 graphics core.
I believe the Xbox's ATI Xenos video card is approximately almost as powerful as a Radeon X1900. Granted, the Radeon 5570 video card is based on an architecture that is 4 generations newer than the Xenos (Radeon X1900), but I think Xenos is still more powerful.
You will not be able to build a gaming PC for under $300. Below are prices for the Llano A8 series CPU and the cheapest motherboard available. The total cost just for those two is $203; add taxes if you live an CA or any state where Newegg has a distribution warehouse like NJ.