Als je videokaart WDDM 1.2 drivers heeft, zijn er wel performance verbeteringen.
Windows 8 includes WDDM 1.2 and DXGI 1.2. New features [..] include performance improvements as well as support for stereoscopic 3D rendering and video playback.
Other major features include preemptive multitasking with finer granularity, reduced memory footprint, improved resource sharing, and faster timeout detection and recovery. 16-bit color surface formats are mandatory in Windows 8, and Direct3D 11 Video supports YUV 4:4:4/4:2:2/4:2:0/4:1:1 video formats with 8, 10, and 16-bit precision, as well as 4 and 8-bit palletized formats.
WDDM 1.0/1.1 only allows rudimentary task scheduling using "batch queue" granularity; improvements to multitasking, as well as fast context switching and support for virtual memory, were initially expected in WDDM 2.0 and 2.1, announced at WinHEC 2006.
bron:
Wikipedia: Windows Display Driver Model
Maar sinds ik geen idee heb of dit alleen geld voor DirectX 11 games of ook voor 10 of zelfs alleen voor de desktop(?) durf ik niet te zeggen of je dit gaat merken, de enige manier om erachter te komen is door het gewoon te testen.