Newer GPU, older GPU... really guys, my 1996 bought Matrox Millennium II with 4 MB of WRAM could power a 1600x1200 monitor with ease.
...in 2D and definitely not 3D... for some actual FPS values (pretty pathetic ones...) in 3D games, an excerpt from http://active-hardware.com/english/reviews/video/mill2.htm :
So, in order to get a good idea about how was performing the Mill II under the DOS mode when used to play games I used the good old Quake 1.06 to measure it frame rate per second because FPS is one of the most important rating for a graphic card when playing games.
I must admit immediately that I have been very deceived ! As a fact the Mill II doesn't perform any better than the old Mill 1 ! However, we must take into account that none of these cards is really supporting 3D other than for CAD applications ! So, it is not a great surprise to lear that the Mill II couldn't make any better than the Mill 1 and the results were about 35fps for the 320 X 200 mode, and 13.4fps for the 640 X 480 mode. The only place where the Mill II did a better job than the Mill I was under the 800 X 600 resolution mode because the Mill 1 has only 4mb of memory installed while then Mill II that I was using was equipped with 8mb of memory so this is why this mode could only be supported by the Mill II.