Intel To Add Another IGP Chipset For Centrino 2
From Digitimes - March 7, 2008
In addition to the previously reported Centrino 2 (Montevina) IGP chipsets GM45, GS45 and GL40, Intel will add a performance/mainstream level model, the GM47 to the list, according to sources at notebook makers. The GM47 features a built-in GMA X4500HD graphics engine like the GM45, but with a higher core frequency of 640 MHz.
More here at Digitimes.