Originally Posted by jmcosta
i think opengl is like dx9 in quality
i noticed lack of tessellation and an effect (i don't remember the name) in Metro
2years ago valve games were almost unplayable and now i get the same framerate on both systems (steamos and w7)
nvidia did a good job recently
nV has historically had a much higher OGL and GL speed. It looks more to me like nVidia wrote code for selective framerate limiting for the SteamOS and implemented it without Valve's awareness.
Something they've done OFTEN in the past.
By personal experience tho I can say that a 700 series Titan will outrun GL/OGL on a 290X, but always remember that nVidia cards are designed to drop detail to maintain framerates, in the end visual motion is more important than detail level for gaming.
As to a titanx getting 100fps in 4k? I say "globular festulating extrusions of semi-fluid fibrous masses from the digestive exhaust port of a male bovine"! Show me a 120hz 4k monitor.