I've been researching video cards with the idea of upgrading mine in the near future but man alive, Nvidia rating and naming schemes are incredibly confusing. The various online vendors don't help you out much, not to mention the various manufacturers of cards that use Nvidia chips who hide their short cuts behind Nvidia's nomenclature. How many versions of the FX5600 are there, for instance? Can somebody suggest a good web site that will help me sort out the tangle?