ok, System Specs:
Pentium M 1.6GHz
512MB System RAM
Radeon X300 128MB
My settings:
Everything on the right side of graphical settings was turned on, except for full screen mode
Graphics Level was at 'High' setting
Render Quality was at 'High' setting
Globe Quality was at 'Medium' setting
Texture Quality was at 'Low' setting
My results:
I tried the second patch(after figuring out how to get it installed and running)
video_mem_usage= 80
I found that I was able to get 100+ fps with this setting during cinematics, but that during the game itself it took awhile to load and would sometimes slow down and seem to freeze for a few seconds, the worst lag was right after opening up a saved game. But overall, I was able to play much better and much faster in my saved game(1910, Large, Future Tech, entire map revealed) than before I installed the patch.
For some reason, some of the ships were colored green, dunno why.
However, it didn't FEEL like it was as high quality as I was used to, and my wonder videos still didn't load very well...it lagged until the video was almost done then went superspeed through the whole thing(super time lapse or something), so I tried a different setting.
video_mem_usage= 128
I found that my cinema sequences(intro especially) still had about 100+ fps
The game itself and the loading of the saved game went much smoother and faster than before(dunno why that made a difference, but it did)
Upon loading the game, I was almost instantly able to control my game, rather than having to wait a minute or two upon loading for it to unfreeze. Everything went much faster. Units lagged by a couple seconds, but that's a completely acceptable tradeoff to being able to move anywhere on the map without lag.
Wonder movies worked brilliantly this time...it loaded immediately, and I saw my first wonder movie since Notre Dame(ironically enough, it was the Manhatten Project that I saw first lol)
I'd give this an A+ so far, a little bit of finetuning is still needed to get rid of the slight lag left, but I'd say Firaxis would be stupid not to talk to you about this patch.