The advent of the 915/925x chipsets from Intel paved the way for a sea of changes including BTX power connectors, PCI Express, LGA775 and DDR2. One of the growing bottlenecks in the PC platform has been memory speeds. It is a fact that the gap between processor and memory speeds has continually grown wider since the inception of the PC. In the last five years, the biggest transition in terms of memory performance is the transition from SDR to DDR. There was also Intel's push towards RAMBUS but it has since dropped off the radar for the mainstream market therefore it will be left out of the discussion.