I sincerely doubt you can play Nighlife on a 1GHz system with 256 Mb RAM as is
stated here. Even I can't run everything on high without experiencing lag.
You "can" play it, but you won't enjoy it.
Proabbly get assloads of lag even in a small 1 person house, and stuttering when rotating, light changes, people entering or leaving the lot, etc.
With a 3.4, 2 gig ram, and 7800 512 you can run a MONSTER house (max size lot, many levels, shitloads of lights, some mirrors, etc. Maxxed with 8 sims and 8 guests with about 7 FPS average. So even the top of the line computers cannot run maxxed sims 2 under the extreme situations very well. 3.2, 1 gig ram, 6800 256 overclocked to the max can run the same lot with 8 sims and shadows off with 7-9 FPS average.
If you max everything and use a small lot with only 1-3 sims you hovor near 30 FPS all the time. At least maxis didn't do what some companies are doing and putting preprogrammed limits on FPS rates (I AM LOOKING AT YOU SONY!!! YOU BASTARDS!!! I WANT MORE THAN 30 WITH MY SYSTEM!!!)
Now I hear tell that a dual 7800 system can hit 20+ FPS constantly, but if you ahve the that kind of money to dump on graphics cards and a system that can handle them, you shouldn't be playing video games. Go better humanity with your massive wad.