Chrome OS is designed for Chromebook and tablets.
But neverware.com with its CloudReady can turn your PC and Mac into a Chrome OS-enabled desktop and laptop computer.
I created an USB installer, booted up and installed successfully. For those who want free OS just to browse the Internet, here's the solution, it doesn't need cutting edge hardware.
Please note that this OS cannot write files to DVD or USB, it can only read from USB or external storage. It can plays multimedia files though, and has a built-in Virtual Box (to experiment with other OS virtually)
http://www.neverware.com (Free for Home users only)
Introducing CloudReady, Turn your PC into Chrome OS