GPU accelerated web browsers

Firefox Web Browser Grand Prix : memory usage
Tom's Hardware: Web Browser Grand Prix
FavBrowser
Browser Wars: Chrome vs. IE9 vs. Firefox

Firefox:
about:support
about:config to enable WebGL and acceleration
Mozilla Firefox 4 with Direct2D and DirectWrite, Hardware Acceleration on Windows 7, Windows Vista with Platform Update, and DirectX 10 graphic cards (check with dxdiag command)

Operation	Linux	Windows XP	Windows Vista/7	Mac OS X
Content	XRender	None	Direct2D	Quartz
Compositing	OpenGL	Direct 3D	Direct 3D	OpenGL

Blocked Graphics Drivers

IE9:
IE9 -> Tools -> Internet Options -> Advanced tab -> accelerated graphics -> use software rendering instead of GPU rendering
Microsoft Internet Explorer 9, ie9 uses Direct2D DirectWrite on Windows Vista, Windows 7, The Architecture of Full Hardware Acceleration of All Web Page Content
Force Enable GPU Hardware Acceleration Graphics Rendering on Old GPU in IE9

Google Chrome: statistics
chrome://memory shows memory usage of all running browsers
chrome://gpu graphics feature status
chrome://flags to enable hidden features and experiments, GPU compositing on all pages failed windows XP
GPU accelerated compositing in Chromium (Google Chrome), Web Graphics – Past, Present and Future, WebGL, OpenGL ES 2.0 API, to DirectX 9 (Direct3D) (through ANGLE)
Chromium switches/options, --enalbe-gpu-plugin --enable-gpu-rendering --enable-accelerated-compositing --enable-accelerated-2d-canvas

Opera Next: uses Blink layout engine
opera://gpu
opera://flags

Opera:
opera://gpu
Opera 12 Alpha with Hardware Acceleration



Safari:
how can I disable hardware acceleration in Safari 5.1 ?
Enabling the debug menu on Safari for Windows
 
Internet Explorer 9 Test Drive Psychedelic Wheel

Opera Blogs desktop
Chromium Blog
Mozilla Firefox Blog
Chromium iOS
Chrome Multi-Device iOS Webkit UIWebView, no Nitro for JavaScript