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之前做过一批板子DDR3跑1600很稳定，而后一批就跑的不稳定，需要降频。板子区别就是做阻抗时线宽调整的比上批的要小，但是阻抗是一样的。这样是否有影响？
请看Tony哥的最小系统搭建其中有相关DDR部分的调整说明
