SiS has launched the R659 RDRAM chipset which implents their new Advanced HyperStreaming Engine : "As the name implies, AHSE is an advanced version of the Hyperstreaming? Engine. AHSE technology features ?Low Latency with single stream?, ?Pipelining and Concurrent Execution with Multiple streams?, ?Prioritized Channel with Specific stream?, ?Smart flow control and Intelligent arbitration with Smart stream? and ?Advanced stream accelerative technology?, compared to Intel's PAT, provide a remarkable improvement in transfer speeds between the CPU, DRAM and the north-bridge chipset."