which would be the width of the bus between the video processor and the video memory.
1GB on 128 is faster then 1GB on 64
you've also gota watch out for the memory speed... some times they'll throw a GDDR or a DDR, don't by the DDR cards buy GDDR.
You've really gota buy video cards on the down and dirty tech specs and not the model numbers..... they try to trick you left and right with that stuff... and its always to get you ot buy a crappy card for to much money.
I always buy them on their specs lol, i find it really dumb to buy them by the model number. I never understood why they give the model numbers in System configs over the magazines etc. Thanks for the answer :)