[ale] PC power supply voltages

[Jim Popovitch]

On Fri, 2007-02-16 at 15:07 -0500, Dan Lambert wrote:
> I don't have an article or link I can point you out to, but it is a well
> know fact that having a low voltage to memory or processor will cause
> data loss or corruption. 
> 
> It's a really fine line, but too much voltage can burn the processor or
> memory circuits out by trace to trace arcing, or too low a voltage will
> cause the current flow to be too high. this overloads the traces and
> they burn out. 
> 
> Processors and memory really don't care about specific voltage or
> current as long as it's within a comfortable range. They live on WATTS!
> The trick is that to get the correct current flow at the correct voltage
> that PS voltage has to be dead nuts on it! A variance of 5% is the
> absolute max, and 1-2% is more like what is required.

Well, this is what it's been showing for the last year... other than the
periodic "spike" on 3.3V.

VCore:     +1.40 V  (min =  +1.93 V, max =  +1.93 V)              
+12V:     +12.04 V  (min = +10.82 V, max = +13.19 V)              
+3.3V:     +3.38 V  (min =  +3.14 V, max =  +3.47 V)              
+5V:       +5.09 V  (min =  +4.75 V, max =  +5.25 V)              
-12V:     -14.91 V  (min = -10.80 V, max = -13.18 V)              
V5SB:      +5.00 V  (min =  +4.76 V, max =  +5.24 V)              
VBat:      +0.03 V  (min =  +2.40 V, max =  +3.60 V)              

An identical second box shows this, w/o the "spikes".

VCore:     +1.36 V  (min =  +1.93 V, max =  +1.93 V)              
+12V:     +12.04 V  (min = +10.82 V, max = +13.19 V)              
+3.3V:     +3.38 V  (min =  +3.14 V, max =  +3.47 V)              
+5V:       +5.04 V  (min =  +4.75 V, max =  +5.25 V)              
-12V:     -14.91 V  (min = -10.80 V, max = -13.18 V)              
V5SB:      +4.95 V  (min =  +4.76 V, max =  +5.24 V)              
VBat:      +0.51 V  (min =  +2.40 V, max =  +3.60 V)              

-Jim P.

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