Well no, that's not the problem here. I can run all 12GB fine at 1600Mhz with 133 or 140 BCLK, even 1700 passes memtest with all 12gb in it.
However, I can't up BCLK and just use 8x or 10x ram mult like with 3 or 6gb it just won't post even at ram speeds lower than 1200

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