Yes, that integrated GMA 4500MHD are support 1920x1080.
Quote:
The GMA 4500MHD for laptops was launched on July 16, 2008. Featurewise, the 4500MHD is identical to its desktop cousin, the X4500HD.[citation needed] It had been previously rumored that a cost-reduced version, the GMA 4500, was to be launched in late 2008 or early 2009[19] and was to be used in the upcoming Q43 and Q45 chipsets.[17] But in practice the Q43 and Q45 Chipsets also use the GMA X4500.[20]
The difference between the GMA X4500 and the GMA X4500HD is that the GMA X4500HD is capable of "full 1080p high-definition video playback, including Blu-ray disc movies",[14] the GMA X4500 however does not have that capability.[15] The G43 and the G45 chipsets are manufactured with 65 nm technology.
Source:
http://en.wikipedia.org/wiki/Intel_GMA