P45 and X48 are the best (and newer) ones. The biggest (and perhaps only) difference is that X48 supports Full x16 Crossfire for dual ATI cards. For single card setup, both will give you close to identical results ... but the P45 is probably half the price .
------------------------------The capacity to learn is a gift; The ability to learn is a skill; The willingness to learn is a choice. - Rebec of Ginaz
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