Just for the record, and to try and stop this turning into a complete "my cock is far larger than yours" thread, here`s a small high res test on my girlfriend`s PC.
The machine is an Athlon XP 2400+, 1G mem, 128M nvidia FX5200 AGP card with 91.47 drivers. 1024x768 monitor.
I installed a base LFS and turned up the options until it looked fairly decent.
I ran the intro replay all the way through and watched the frame rate stay pretty stable at 48fps.
I then swapped over my entire DDS folder which has all of Kar`s high res updates, all my own current and dev high res stuff, and various other things far larger than the default LFS textures.
Running the intro replay again showed the same stable 48fps, with absolutely no noticeable loss whatsoever.....