http://www.hexus.net/content/item.php?item=6767ATI's X1950 XTX's GDDR4 is clocked to 1GHz (2GHz effective). The Inquirer has learned that yields for Samsung's GDDR4 parts at 1GHz is "almost perfect", while word that "yields of higher clocked parts are good as well" tops the cake with a nice moist icing. That means cheap parts, which could well lead to refreshed cards with greater performance at little or no extra cost. Huzzah!