As the amount of data passing between the processor and northbridges scales up, bottlenecks start to become more of a problem and if not corrected can slow down the memory bandwidth, or even AGP bus. With more and more high speed devices on the market going through the PCI bus, it's starting to become max'd out very quickly, so SIS have developed a new technology called Hyperstreaming for their chipsets.

SIS' Hyperstreaming technology is not a new bus, it is just an optimization of how data flows from the PCI bus to the Southbridge, to the Northbridge and finally to the processor.

The first component to HyperStreaming is SiS' Simple Stream with Low Latency technology. Single Stream with Low Latency describes a situation where one or two streams of information between any given device and SiS's 655FX chipset have been optimized for the lowest latency between the CPU and its I/O device. These situations include; CPU-to-VGA, CPU-to-HDD, and CPU-to-Memory for example. What that means is that data will have a lower wait state between the chipsets, and depending on exactly what the processor is trying to communicate with, one can expect fairly dramatic increases in performance.