This processor’s memory controller specifically supports memory running at 1066/1333/1600MHz at 1.5V only. Specifications can be confirmed at the processor data sheets, page 11: http://www.intel.com/content/www/us/en/processors/core/3rd-gen-core-desktop-vol-1-datasheet.html
If using not compatible memory an unstable environment would be expected, reason why this is not part of the 3 year limited warranty services as it only covers manufacturing defects.
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