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xmp not working after latest b450m mortar bios

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Posted · Original PosterOP

After the 7B89v18 bios update features like AXMP-1 AND AXMP-2 Are not working! The motherboard rejects them and i have to clear CMOS after failure. The machine boots fine but i got no signal. Right now the timings are 2133MHZ for both RAMs.. My ram is F4-3200C16D-16GTZB

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What you can try doing is inputting the Frequency/Timing/Voltage manually. Though the detail page of your board says it can only go up to 2666MHz before manual overclocking becomes necessary and that can get complicated. Might explain why it stopped working after the BIOS update. The update might have a bad tweak to it when enabling X.M.P. for memory over 2666MHz.


For what reason did you update your BIOS?

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