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Old 03-26-2020, 06:59 AM
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If the XMP is not working but manual settings do, it is usually a motherboard/UEFI issue. Some BIOS versions are known to forget adjusting Vdimm for example and in other cases enabling the XMP changes other voltages to levels that might be unsuitable (too low/high) for the processor in use.

It happens quite a bit with AMD motherboards, but very rarely on Intel platforms until they reach their supported maximum memory frequency range. It is reminder that Intel Extreme Memory Profiles (XMP) are a standard designed for Intel platforms, which the AMD motherboards only support via workarounds from the motherboard manufacturers (DOCP, A-XMP etc).
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