[geeks] VRM Failures

[Phil Stracchino]

On Mon, May 03, 2004 at 10:46:04AM -0400, Kevin wrote:
> My DNS server at work died this morning.  VRM failure in an IBM
> xSeries 340.  Actual CPU failures seem to be fairly rare but
> these damn VRM modules don't seem to be nearly as hardy.  What
> exactly do VRM modules do?  I am assuming "Voltage Regulation
> Module" or something of that nature...

"Voltage Regulation Module" is exactly it.  They clamp the bus voltage
to within narrowly defined limits, and in particular the VRM's job is to
avoid overvoltage that could damage the processor.


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