What is "vrpm"

vRPM, or virtual Revolutions Per Minute, is a term for a synthetic measurement of performance introduced by SanDisk for solid state drive (SSD) storage devices inside client PCs. vRPM was created to give users a metric to compare SSD performance to the hard disk drive (HDD) and to other SSDs. It answers the question: "How fast would you have to spin a virtual HDD to achieve the performance of an SSD in a client PC?" It uses a language that users understand, RPM or Revolutions Per Minute, that is a defacto industry standard to measure the performance of the HDD inside PCs.