When you read the minimum requirements for a game, what that is telling you is the bare minimum that is needed to play the game in the lowest possible settings. The better your system, the better settings you can use in the game.
As for compairing gfx cards to one another and see what's about equal to one or another, I found this site HERE
. It's outdated, but it's the best I could come up with. The bottom of the list is old cards, getting newer towards the top of the list. Keep in mind that there are now faster cards out than the ones listed there.
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War produces veterans, wounded both physically and mentally. They have sacrificed for us.....and it is now our job to help these veterans, as they have already helped us in ways we will never know, in ways that we cannot fathom, and in ways that we take granted every day.