The example in the video is probably one of the applications where this problem is more easily spotted but there are many others which show the same behavior in a different degrees depending on how they call GDI functions. The file explorer scrolling is also much slower than in XP. The video shows how slow is the services.msc window, and the graphical artifacts it has, but it's not the only one. Too bad, the results I got were based on WDDM 1.1 drivers (both from nvidia and Microsoft itself). So any driver which claims to be 1.1 is already accelerating as much as it ever will. WDDM 1.1 drivers makes mandatory this new "partial" GDI hardware acceleration. GDI hardware acceleration in Windows 7 using WDDM 1.1 drivers has only these functions hardware accelerated: If you want to learn more about it read this: Microsoft chose software render because they found too difficult to combine the new graphical engine with the old one. Windows Display Drivers Model used in both Vista and 7 doesn't include the neccesary hardware accelerated 2D functions to make the graphics generated by GDI and GDI+ as fast as in Windows XP. VooD - AugThis video demonstrates the slowness of the new Windows 7 GUI.
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