Forgot to add that the LFS settings are all on the highest quality, and the latest drivers.
Yah, I know its nothing new, but i was bored. :P And yah, different cards will take a different performance hit with aa/af on. I should throw my 9500 pro in here and see how it does.
I decided to do some benchmarks to see how CPU dependant LFS really is. The results I found are pretty impressive.
Test Setup:
CPU: Intel P4 2.4c @3.2Ghz
Memory: OCZ PC4000
Video Card: XFX 6800GS AGP @ 420/1.1 (Unlocked to 16/6)
OS: Windows XP MCE
Sound Card: Creative X-Fi Extreme Music
The Benchmark: I made a custom replay with 12 XFG AI on Blackwood.
Fraps was used to record the framerate for 60 seconds, benchmark started and stoped at the same time every run.
Each test was ran twice, then the results were averaged.
The Results:
The first test was run with 8xaa/16xaf.
The second test was run without AA and AF.
Conclusion: As you can see AA/AF, and resolution has a very little effect on performance. Framerates are almost identical throughout all the resolutions with and without AA/AF. So if you want to squeeze thoes extra frames out of LFS, but have a mid range video card, and a low end cpu, upgrade the cpu first. Most of you already know this, but to bad, I felt like posting something.
UPADTE!
Ran the benchmarks again at 2.4ghz. Even more impressive results.