I use to play with Pandora open in Chrome while playing til I got this error then I stopped. I do have my TV hooked up to it as a second monitor. I could do all this with my 570 so I didn't think I needed to change my setup after upgrading my card. Chrome seems to use a lot of memory so I'll start using IE and see if that helps any.
Rather than switching browsers, just don't have the browser open, Pandora too. Assuming you still have it open, just close it and see if it happens again.