I had seen many report about 64MB Ram on Display card
Because Geforce II series or Radeon also support 4x FSAA..
If you open 4x FSAA, the screen will become more beautiful. I had try it, it's right.
And If you use 1280*1024 with 32bit colour and 4x FSAA, powerful display is needed.
And if your display card have 64MB Ram,
it will run more smooth than 32MB Ram.