im about to get another kt133a board (sdr not ddr)  not much of a performance gain with ddr yet,
neither tbird or palomino take much advantage of the additional bandwidth, (although the palomino will use more memory bandwidth with its new prefetch features)
wont be until the next core from amd after the palomino that ddr will really show its advantages,  and by then it will be time for a new mobo,  and thats when ill get the ddr board