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| Author |
Message |
External
Since: Jul 01, 2004
Posts: 20
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(Msg. 1) Posted: Sun Jul 11, 2004 3:10 pm
Post subject: VCore Cap on P4 Northwoods ???
Archived from groups: alt>comp>hardware>overclocking (more info?)
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I've just installed a new P4C3.0Ghz on a P4C800-Edl, and I can't increase
the VCore above 1.6 volts. Even if I put the FSB back to 200, it still
won't let me increase the voltage. I just get a message on boot "Bad
Overclock" and have to enter the bios to change the voltage back.
On the same mobo, I took my other P4C3.0 to 1.75 volts without a problem
(YES, I know, I didn't have it there for long, maybe 6 hours or so). This
cpu now sits in an IC7-G at 3.78GHz with vcore at 1.7v and it quite happy.
Both cpus are SL6WUs, same D1 stepping, the old one manufactured in
Malaysia, the new one in Costa Rica.
The old cpu has 30 capacitors under the core, but the new one has less.
That is the only difference I can see.
Any clues what's going on here ?
TIA,
Stu. |
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External
Since: Aug 11, 2004
Posts: 1478
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(Msg. 2) Posted: Sun Jul 11, 2004 7:03 pm
Post subject: Re: VCore Cap on P4 Northwoods ??? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Stuart Gibson wrote:
> I've just installed a new P4C3.0Ghz on a P4C800-Edl, and I can't increase
> the VCore above 1.6 volts. Even if I put the FSB back to 200, it still
> won't let me increase the voltage. I just get a message on boot "Bad
> Overclock" and have to enter the bios to change the voltage back.
>
> On the same mobo, I took my other P4C3.0 to 1.75 volts without a problem
> (YES, I know, I didn't have it there for long, maybe 6 hours or so). This
> cpu now sits in an IC7-G at 3.78GHz with vcore at 1.7v and it quite happy.
>
> Both cpus are SL6WUs, same D1 stepping, the old one manufactured in
> Malaysia, the new one in Costa Rica.
>
> The old cpu has 30 capacitors under the core, but the new one has less.
> That is the only difference I can see.
>
> Any clues what's going on here ?
The motherboard probably limits Vcore to a percentage over default and the
new one has a lower default Vcore.<!-- ~MESSAGE_AFTER~ --> |
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External
Since: Jul 01, 2004
Posts: 20
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(Msg. 3) Posted: Mon Jul 12, 2004 9:02 pm
Post subject: Re: VCore Cap on P4 Northwoods ??? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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I've never heard of anything like that before.
I thought I could increase the vcore until I blew the cpu if I wanted to.
Not that I would want that to happen, of course!
"David Maynard" <dNOTmayn RemoveThis @ev1.net> wrote in message
news:10f3ap54rg31783@corp.supernews.com...
> Stuart Gibson wrote:
> > I've just installed a new P4C3.0Ghz on a P4C800-Edl, and I can't
increase
> > the VCore above 1.6 volts. Even if I put the FSB back to 200, it still
> > won't let me increase the voltage. I just get a message on boot "Bad
> > Overclock" and have to enter the bios to change the voltage back.
> >
> > On the same mobo, I took my other P4C3.0 to 1.75 volts without a problem
> > (YES, I know, I didn't have it there for long, maybe 6 hours or so).
This
> > cpu now sits in an IC7-G at 3.78GHz with vcore at 1.7v and it quite
happy.
> >
> > Both cpus are SL6WUs, same D1 stepping, the old one manufactured in
> > Malaysia, the new one in Costa Rica.
> >
> > The old cpu has 30 capacitors under the core, but the new one has less.
> > That is the only difference I can see.
> >
> > Any clues what's going on here ?
>
> The motherboard probably limits Vcore to a percentage over default and the
> new one has a lower default Vcore.
><!-- ~MESSAGE_AFTER~ --> >> Stay informed about: VCore Cap on P4 Northwoods ??? |
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External
Since: Aug 11, 2004
Posts: 1478
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(Msg. 4) Posted: Mon Jul 12, 2004 11:31 pm
Post subject: Re: VCore Cap on P4 Northwoods ??? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Stuart Gibson wrote:
> I've never heard of anything like that before.
Well, I don't know for sure about that particular one but it's not uncommon.
For example, folks found a flash procedure to fool some Abit boards (P3 for
the one I'm thinking of) into thinking the default Vcore was different so
they could manually set a higher voltage. In that board's case the limit
was 15%.
It's a safety limit to prevent people from putting something outrageous in.
>
> I thought I could increase the vcore until I blew the cpu if I wanted to.
> Not that I would want that to happen, of course!
>
>
> "David Maynard" <dNOTmayn DeleteThis @ev1.net> wrote in message
> news:10f3ap54rg31783@corp.supernews.com...
>
>>Stuart Gibson wrote:
>>
>>>I've just installed a new P4C3.0Ghz on a P4C800-Edl, and I can't
>
> increase
>
>>>the VCore above 1.6 volts. Even if I put the FSB back to 200, it still
>>>won't let me increase the voltage. I just get a message on boot "Bad
>>>Overclock" and have to enter the bios to change the voltage back.
>>>
>>>On the same mobo, I took my other P4C3.0 to 1.75 volts without a problem
>>>(YES, I know, I didn't have it there for long, maybe 6 hours or so).
>
> This
>
>>>cpu now sits in an IC7-G at 3.78GHz with vcore at 1.7v and it quite
>
> happy.
>
>>>Both cpus are SL6WUs, same D1 stepping, the old one manufactured in
>>>Malaysia, the new one in Costa Rica.
>>>
>>>The old cpu has 30 capacitors under the core, but the new one has less.
>>>That is the only difference I can see.
>>>
>>>Any clues what's going on here ?
>>
>>The motherboard probably limits Vcore to a percentage over default and the
>>new one has a lower default Vcore.
>>
>
>
><!-- ~MESSAGE_AFTER~ --> >> Stay informed about: VCore Cap on P4 Northwoods ??? |
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External
Since: Jul 01, 2004
Posts: 20
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(Msg. 5) Posted: Tue Jul 13, 2004 8:43 am
Post subject: Re: VCore Cap on P4 Northwoods ??? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Interesting! I have used 2 Abit P3 boards, a BF6 with a P3-800EB@1070 which
died after running at 178FSB for a year (that was a goood one!), and still
have a working ST6 with a P3S1.4 DeleteThis @1.6 , but I didn't have to flash them to
get higher vcore, I just used the vid pin wire trick on the cpu pins for
those.
Thanks for the info.
Stu.
"David Maynard" <dNOTmayn DeleteThis @ev1.net> wrote in message
news:10f6er4ijqoc4c9@corp.supernews.com...
> Stuart Gibson wrote:
>
> > I've never heard of anything like that before.
>
> Well, I don't know for sure about that particular one but it's not
uncommon.
>
> For example, folks found a flash procedure to fool some Abit boards (P3
for
> the one I'm thinking of) into thinking the default Vcore was different so
> they could manually set a higher voltage. In that board's case the limit
> was 15%.
>
> It's a safety limit to prevent people from putting something outrageous
in.
>
> >
> > I thought I could increase the vcore until I blew the cpu if I wanted
to.
> > Not that I would want that to happen, of course!
> >
> >
> > "David Maynard" <dNOTmayn DeleteThis @ev1.net> wrote in message
> > news:10f3ap54rg31783@corp.supernews.com...
> >
> >>Stuart Gibson wrote:
> >>
> >>>I've just installed a new P4C3.0Ghz on a P4C800-Edl, and I can't
> >
> > increase
> >
> >>>the VCore above 1.6 volts. Even if I put the FSB back to 200, it still
> >>>won't let me increase the voltage. I just get a message on boot "Bad
> >>>Overclock" and have to enter the bios to change the voltage back.
> >>>
> >>>On the same mobo, I took my other P4C3.0 to 1.75 volts without a
problem
> >>>(YES, I know, I didn't have it there for long, maybe 6 hours or so).
> >
> > This
> >
> >>>cpu now sits in an IC7-G at 3.78GHz with vcore at 1.7v and it quite
> >
> > happy.
> >
> >>>Both cpus are SL6WUs, same D1 stepping, the old one manufactured in
> >>>Malaysia, the new one in Costa Rica.
> >>>
> >>>The old cpu has 30 capacitors under the core, but the new one has less.
> >>>That is the only difference I can see.
> >>>
> >>>Any clues what's going on here ?
> >>
> >>The motherboard probably limits Vcore to a percentage over default and
the
> >>new one has a lower default Vcore.
> >>
> >
> >
> >
><!-- ~MESSAGE_AFTER~ --> >> Stay informed about: VCore Cap on P4 Northwoods ??? |
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