Been using the HyperX 3k for about 2 months. Got on a sale lats year with the kit. Up until then i was using a Entry level 64Gb sandisk Sata 6Gb/s. The Kingston hyperX3k is slower in evrey way as far as I can tell. Not by much but still slower. My WD1002FAEX writes a 4GB file faster to a WD Blue 1Tb drive. the KHX 3k will top out at 500MB/s for maybe 1 or 2 seconds the drops off to 40MB/s while the HDD maintains a steady 115MB/s. Just goes to show that reviews are not what they seem