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On April 17, Silicon Integrated Systems (SiS) announced that it has already lined up over 13 motherboard and notebook clients for its 800MHz FSB (front-side bus) Pentium 4 SiS648FX chipset, scheduled to begin volume production by the end of April. It is also planning to later introduce a series of discrete and integrated chipsets – the SiS660FX, SiS655FX and SiS661FX. VIA Technologies will be comparatively slower to reach volume production, despite being the first to obtain technology licensing for the 800MHz FSB (front-side bus) standard. Though VIA’s first 800MHz FSB-supporting chipset, the PT400, is only entering sampling now, the company is expected to be ready for the high season in the second half.