Quote:
I wonder if it's simply got a limit on frame buffer memory.


Hmmm... with 32 bit color 24 bit color
1600 x 1200 = ~59 Mb ~44Mb
2048 x 1536 = ~96 Mb (max frame buffer?)
1920 x 1200 = ~71 Mb ~52Mb
17" LCD likely 1280 x 1024 =~ 40Mb ~30Mb