Great, in depth article by BFG10k.
I've already done ATi 4000 vs ATi 5000 vs nVidia 200, but due to forum rules I'm not allowed to link to my articles outside of my sig. Having said that, somebody else posted a link here (second link from bottom):I would truly be interested (hopefully BFG10K will do this) in a comparison between the 5XXX series, 6XXX series and 4XX series together so we can put this issue to bed. If I've missed part of this (say 5XXX versus 4XX) I'd appreciate a pointer in the right direction.