Is there anything below 1280 wide like 1024x576 (or 1024x640) as an example? The 4:3's go clear down to 320x240, with 640x480 as the standard minimum, and clear up to 2048x1536 (the highest standard I've seen).
"You level up the fastest and easiest if you do things at your own level and no higher or lower" - useful tip
My 2D game - release on Jun 13th; My tutorials