ShootMyMonkey
Veteran
VIA's is a tad different. XDR, to summarize, uses a clock multiplier and a larger fetch size on a single channel running at 4x the clock speed of the DRAM. VIA's QBM, roughly speaking uses multiple DRAMs on independent channels, that are 90 degrees out of phase with each other. QBM, since it does this phase-shift thing, is not quite *exactly* aligned in terms of 4 transfers per cycle, but it's effectively the same in terms of end results. Slightly out of alignment because the actual transition times take x amount of time and aren't sped up in anyway.BTW, how about the quad channel ddr thing that VIA was working on about a year or so ago?