We’re hearing that GDDR5 testing has been going so well that AMD has ramped up production of the RV770 chips and will be aiming to have both RV770XT and RV770Pro out as soon as possible. While current GDDR5 chips are capable of more than 4GHz, AMD will keep them below that for power consumption reasons. Partners will have overclocked cards for you to sink your teeth into. Media samples are being produced as we write this, and should be heading out to testers very soon now.