PROPER SUPPORT FOR DDR SDRAM on the Pentium 4 platform has been a long time coming, in part of because of Intel's long-standing fascination with Rambus, and in part because of a legal dispute between Intel and VIA. Now Intel's own DDR chipset for the Pentium 4 is upon us, so we're rounding up a bevy of Pentium 4 chipsets to see which one is fastest. Will it be Intel's Rambus-driven 850? VIA's newly revamped P4X266A? Or the dark horse with the big muscles, SiS's 645 with support for DDR333 memory? Read on to find out.