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TMDSEVM6678LE的DDR3不够用的问题



大神们好,我用的是TMDSEVM6678LE这块板子,想做4096*4096点的double型FFT,说明书上的参数是512M的DDR3-1333,完全不够用。我看芯片手册上写的支持高达8G的DDR3,这个内存可以外扩吗?我看板子上已经外接了4块DDR3,但是512M这个参数真的不够用啊。请问用这块板子能完成我的任务吗?能想办法扩到8G吗?