I recently buyed a wd green 120 GB SSD but it's read and write speed and not up to the mark as mentioned ..the mention speed is about 545mb/s but what I get is just 280mb/s on average .I tried several benchmarks such as atto and crystal but the 280 mb /s was max .I had connected it through sata 3 ..what should I do to get its max capacity. plss help and thanks in advance