OK, here goes:
Standing on the bridge between the Imperial Prison and the City
Stock uGridsToLoad=5
Stock fGrassEndDistance=8000
Link to Large Version
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uGridsToLoad=25
fGrassEndDistance=50000
Link to Large Version
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Just outside Imperial City by the stables
Stock uGridsToLoad=5
Stock fGrassEndDistance=8000
Link to Large Version
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uGridsToLoad=23
fGrassEndDistance=50000
Link to Large Version
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You can see in the shot from the prison the two "hero object" cities - one at the upper right, one at the middle left - are shown even at the stock settings. Whereas the ruined fort right across the river isn't shown at 5 grids, but is at 25. You can see that one of the hills on the horizon has trees appear, but the others don't, so I think I'm not loading -everything- in view. Also notice how bad the texture tiling looks in the medium distance, I think mipmaps aren't even used for the ground textures? Also the terrain mesh that gets loaded is much higher res than the far distance one. Notice the hills to the left of the cursor in the Prison shot. I turned on wireframe view and it looks like 10 times the polys for the loaded cells.
One bug with high grids loaded is shown in the Stables shot. The water mesh is partly gone, and also the reflections are messed up. Folks are also reporting a weird "jumping" bug when a grid setting of higher than stock are used. While climbing hills on horseback you get this weird jittery up and done movement. So it sounds like tweaking this .ini setting is unusable for actual gameplay.
Beyond 25 grids at the prison and 23 grids at the stables it loads the save until the bar is almost done then CTD. Hard. Reboot needed. Takes about 10 minutes to load a savegame, vs 20 seconds at the stock 5. FPS is 30 at 5 grids, 2 or 3 at 25 grids. Word is that the actual grids loaded are the square of the .ini setting, so at uGridsToLoad=25 I actually have 625 real grids loaded.
Other than the above notes all in-games settings are maxed out for these shots except; 1600x1200, bloom lighting, and 2x AA. (My normal playing mode is less than maxed and gets me 40+FPS in those two locations)
System:
Xeon Dual 2.8 CPUs
Tyan Intel i7505 533FSB
2GB 266 DDR RAM
GeForce 7800GS @ 460 & 1.35
Detected during install as "Ultimate Quality"
Hardrive is a removable one I use solely for games. WinXP SP2, modified using nLite to strip anything not needed for offline gameplay. Only a couple of utilities installed, and none that autoload at startup. Any Win service not essential for the basic GUI is stopped from loading. As optimized as I can get this bitch. I Rebooted before each of the high grid shots.