Obviously more is better, and I understand winXP can always use more, but I'm using 98se and would just as soon not spend the money if it doesn't make much difference. I'm running a 950mhz Tbird with 128mb 2100 DDR and a brand new Gf3 ti200. The Gf3 may be a bit unbalanced for the system but I wanted the DX8 special effects and I got a great deal (thanks anandtech). I don't see any problems in my ordinary use, but if the ram is a bottleneck for the system or the Gf3 I would like to know. How much is enough to keep the video card humming?
