The VRM

    The VRM or Voltage Regulator Module, is the device that supplies the Pentium Pro CPU with power.  This card is programmed by for of the pins from the CPU to supply the correct voltage.  These VRMs were used in late Pentiums, most Pentium Pros, and early Pentium IIs.  The VRMs that we purchased were manufactured by Raytheon, now sold to Fairchild.  More information can be obtained from this website.

Two VRMs attached to the CPU card.