Oh, you mean when TI first demonstrated the capabilities on a reference design board plugged into a DC power supply and with large amounts of copper for proper heatsinking? This is a far cry from integration into the compact battery powered solution of a mobile phone. Either way we'll see this scale up soon enough and the 600MHz we're going to see is going to perform very well. Sourcing IC's that are capable of running stably at 1GHz are going to be a little expensive for a some time.