128 and 256 bit cards

[PanzeR_1987]

hi,

i was looking at the new range of cards on the market the other day and i found a few nice choices.

i just wanted to know would i be better of getting a lower powered core/memory card 665/2000 with 256 bit or getting a hight core/mem card 830/1860 with 128 bit?

Ive heared that bit differences in cards normally affect the AA/AAF filtering quality? the higher the bit the better thee aa/aaf.