Hi! Notescraps is a WPF program and uses 0% cpu when animating (changing notes) and scrolling, and looks sweet when zoomed in. Windows 7 however... WDC, like in Vista, is of course accelerated on the GPU. But not the old GDI+. This means that Windows 7 is one step behind OSX Leopard If you look at the three Quartz implementation diagrams in sequence, you can see how the video card portion of the diagram has slowly expanded over the course of four years to encompass more and more of the display layer. The reason is clear when you look at the bandwidth numbers: 30GB/s between the GPU and VRAM, and that number is climbing rapidly—much more rapidly than the bandwidth between the CPU and RAM. As you can see, Quartz 2D is now running on the GPU. This is Quartz 2D Extreme. The only thing left for the CPU to do is to send (relatively tiny) drawing commands to the video card through the driver. http://arstechnica.com/reviews/os/macosx-10-4.ars/14 Vector and hardware acceleration sure would be sweet for resource management