According to Wikipedia, HDMI 1.3 & 1.4 can support 2560x1600 and much more. http://en.wikipedia.org/wiki/HDMI#Version_1.4 http://en.wikipedia.org/wiki/HDMI#Vers

According to Wikipedia, HDMI 1.3 & 1.4 can support 2560x1600 and much more. http://en.wikipedia.org/wiki/HDMI#Version_1.4 http://en.wikipedia.org/wiki/HDMI#Version_1.4 At the same time, I have no idea what version this laptop is supporting, but seeing as 1.3 is already 5 years old, I'd suspect that is the minimum currently supported.