Front page slider size

Quick question. Reading through the threads, it looks like 930×340 is the right size for the front page slider. But, if we want the image to extend beyond the page, is there a size that works better (I’ve seen numbers in here up to 1500 or so)? In other words, should I use a larger image, realizing that the visible part will be commensurate with 930×340, but will still extend the image beyond the edge?

Or maybe the better question is, what size image did you upload the front page on your site (for the Enfold demo)?

Note: I’m not a techie :-)

Thanks!

Bruce