Bought 64GB 3000Mhz Kit , The Ram is working at 3000 Mhz speed after enabling the XMP profile , Tested with Memtest86 no problems at all , But the Heat sink for one side of one of the two rams is taller than normal , so I had to force the ram in the socket , and the heat sink moved up a little and got lossen (QC issue) , also the tRFC timing is 825 which is really bad for this unknow die type .See full review