no dont worry about not being able to play opengl 1.4 games with the 1.3 card because there will probably be a new driver or such, that will change that, plus, i dont think any game "requires" opengl over version like 1.2.
you do not need 256mb of ram with either of these cards. that is a fact. the 256mb or ram kicks in when you are gaming in resolutions in excess of 1600x1200. most monitors cant achive that resolution, and even if it could, either card will get choppy frame rates at that high of a resolution, and then you wouldent want to play at that resolution. for these midrange cards, 128 is plenty, and they could probably do with 64. but you get my point.
I'm telling you agian. from what i can see and the research i did in the last hour, the nvidia gefore fx5500 is the better buy. more power, and cheaper. Plus you get to watch the nvidia demos including the faries!!! http://www.nzone.com...ndemo_home.html
i know its not right to copy matierial off of other websites, but here is a graph i found showing 3d mark 03 scores:
my opinion: get the nvidia geforce fx5500
p.s. i'm trying not to start an nvidia vs ati war here.