Archived from groups: alt.comp.periphs.mainboard.asus (
More info?)
"Paul" <nospam@needed.com> wrote in message
news:nospam-0304051330150001@192.168.1.178...
> In article <LvydnRmZ66UIl83fRVn-ig@comcast.com>, "Gert B. Frob"
> <sbrentcarter@spaminator.net> wrote:
>
> > Asus Probe, Aida32 and CPU-Z are all reporting that my motherboard is
> > over-volting the vcore. Values vary from time to time between 1.584 -
> > 1.616. The max value, according to Intel is 1.55v. The processor is a
3.2
> > ghz 800 FSB Northwood P4.
> >
> > The BIOS is AMI 1016.001 which, according to ASUS, is appropriate for
this
> > processor. The settings are at auto / standard.
> >
> > The manual states that vcore is adjustable between 1.475 and 1.600
volts.
> > However, when I go to set the value manually, nothing less than 1.55
volts
> > is available. Manually setting the value to 1.55 v does not change the
> > readout values.
> >
> > Is this a problem? Is it possible that the processor may be damaged by
this
> > voltage?
>
> There are many different models of processors, and you have to
> pick the appropriate datasheet and get the value from there.
>
>
http://developer.intel.com/design/Pentium4/documentation.htm
>
> Your processor is documented in the link labelled:
>
> "Intel Pentium 4 Processor with 512-KB L2 Cache on 0.13 Micron
> Process and Intel Pentium 4 Processor Extreme Edition Supporting
> Hyper-Threading ÝDatasheet"
>
>
http://developer.intel.com/design/pentium4/datashts/298643.htm
>
> The actual datasheet is here:
>
ftp://download.intel.com/design/Pentium4/datashts/29864312.pdf
>
> (The spec update will give you other information about the features
> supported by your particular processor.
>
>
http://developer.intel.com/design/pentium4/specupdt/249199.htm )
>
> On page 23 of 29864312.pdf, absolute max is 1.75V.
>
> The allowed voltage variation versus load current (the "load line")
> is shown on page 29. Figure 2-4 says basically it is OK for the
> voltage to vary a bit on the low side of the nominal VID.
>
> The nominal VID value for the voltage, may be printed on the
> label on the retail Intel processor box. If the processor is a
> "multiple VID" unit, the value will not be printed. The datasheet
> has possible values listed for how the VID may be set. For those
> units, looking at the value in the BIOS, when Vcore is set to
> [Auto], might be one way to determine the value encoded on the
> VID pins.
>
> It seems to be normal for the Asus monitoring circuit to be reading
> a voltage slightly higher than the one you would expect. For
> example, people with old AMD boards, normally see 0.048V more
> than the nominal value, when the processor is idling. It is hard
> to say whether Asus, on purpose, gives the processor a little
> more (as part of load compensation tricks), or the monitoring IC
> is just not very accurate. As long as the processor is not getting
> close to "Absolute Max", the only consequence of a little extra
> voltage, is a little extra heat.
>
> In the case of some processors, the processor will crash before
> it reaches Absolute Max. I have a Barton XP-M, and it won't POST
> if the voltage is too high. So, in fact, there is no guarantee
> that a processor will function, all the way up to Absolute Max.
> A processor can be run at less than Absolute Max, without being
> damaged, yet be unable to boot. Absolute Max is the value at
> which permanent damage may occur (and the damage rating may be
> a 100,000 hour rating, meaning the damage may take years to
> accumulate). The extent to which you exceed Absolute Max may
> determine how long a processor will last.
>
> For example, it has been posted in the past, that if you run a
> Tualatin 1.5V processor at 1.8V, when the Absolute Max is 1.75V,
> it will last for a month or so.
>
> HTH,
> Paul
Paul,
The max value, stated on the package, is 1.55v. I have read that ASUS
intentionally bumps up the voltage by as much as .058 which would make it
1.608. The monitors generally reflect 1.616 and sometimes drop to 1.58. I
don't believe it has ever exceeded the 1.616 value.
I suppose this is comfortably below 1.75 and I am having no heat issues.
Would you say to forget about it?
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