We already know about Intel's upcoming X38 Express chipset, which is scheduled to replace the aging 975X some time this month. However, the folks at DigiTimes have word that Intel is prepping a second enthusiast chipset for a launch not long after the X38's introduction.
DigiTimes says this second chipset is dubbed X48, and that it will be based on the same design as the X38, with a few notable changes. The maximum front side bus speed will be bumped up from 1333MHz to 1600MHz, and the maximum supported memory speed will similarly climb from DDR3-1333 to DDR3-1600. Board makers will reportedly be able to use the same PCB for either X38 or X48 mobos, and X48-based products should start hitting stores some time in the first quarter of 2008.
That said, anonymous sources at Intel's Taiwan arm told DigiTimes, "[Intel will] decide whether to launch an upgrade version of X38 chipset after evaluating the market reaction to the X38-based motherboards." Other sources also tell the site that X38 mobos could be overclocked to 1600MHz FSB and memory speeds.