It's safe to say that any card, and I mean any card, based on the R420 GPU will be a good one. Greater rendering parallelism and higher core and memory speeds ensure that benchmark performance will be stellar. That point of view is corroborated by decent benchmark results from Crucial's X800 PRO. If, then, all X800 PROs are considered to be 'good', what makes one better than another?. What immediately springs to mind are cards that arrive pre-clocked at higher-than-default levels, or ones that bundle in the very latest games, or, for most buyers, the ones that are the cheapest.