User hardware detection

Yesterday I saw some kind of list of End User hardware. Now I can’t find it. The list was divided into quarters like 3rd quarter 2011 and contained information on which graphics card, CPU and amount of RAM the users have in their computer. A very useful list when you have to determine specs to your future game or simulator. Can anybody tell me where to find it again?

Google is your friend. Really. http://unity3d.com/webplayer/hardware-stats.html