At what resolution would you start taking advantage of 1gb vram?

A little dated, but the following shows performance games between a HD 4870 1GB vs. HD 4870 512GB

http://www.xbitlabs.com/articles/video/display/radeon-hd4870-1024_15.html#sect1

Edit:

19.png
 

BruceOTB

Distinguished
Mar 5, 2009
318
0
18,780
thanks. would a 512mb max out 1680x1050 full aa/af, given that the card has the ability to do it. (gtx 295 mars edition but with only 512mb ddr3 256 bit as a sample.)