This WD10TPVT referenced disk is not rotating at 5400rpm / min but 5200tr / min. This is the model that turns WD10JPTV 5400rpm / min. Another difference between these two models is the noise, the loudest being slower 2dB more. Another thing to consider is the thickness. The fact JPTV 3mm less allowing it to go into finer caddies. The TPTV will not fit everywhere. A by it that are both excellent reliable drives.