P4T533-C and intermittent memory errors

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Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

Gentlemen all:

I have a customer's system here in the shop, with the P4T533-C board (bios 1008)
and a 3.0GHz chip sitting on top of it. Recently, he's been reporting blue
screens in his Win2K install, and through trial and error, discovered that when
he slowed the cpu clock/FSB down from 133 to 100, the system stabilized.

Initially, the system had a pair of 256MB Samsung 1066Rambus sticks, to which
was later added a pair of 512MB Samsung 1066Rambus, totalling 1.5 GB. Memtest
is still showing intermittent memory errors when run for extended periods of
time.

Having found the processor to be at fault in the past, I dropped it into a
different model board with some newer DDR memory, and it ran for about 24 hours
without incident. So, that doesn't appear to be the culprit. Next step was to
put the chip back on the old board and put on a pair of 800Rambus sticks I
brought in from home... no errors.

The question, then, would seem to be this: is the memory itself (two different
batches, dated a year apart) at fault, does this board not like this flavor of
memory, or is it having trouble running *any* memory at 1066? Sadly, as I lack
another brand of 1066 memory, or another Rambus-equipped board, I do not have
the ability to test further.

Is there anything else I can try?

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Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

Fish Taco Joe Schmuckatelli wrote:
> Gentlemen all:
>
> I have a customer's system here in the shop, with the P4T533-C board (bios 1008)
> and a 3.0GHz chip sitting on top of it. Recently, he's been reporting blue
> screens in his Win2K install, and through trial and error, discovered that when
> he slowed the cpu clock/FSB down from 133 to 100, the system stabilized.
>
> Initially, the system had a pair of 256MB Samsung 1066Rambus sticks, to which
> was later added a pair of 512MB Samsung 1066Rambus, totalling 1.5 GB. Memtest
> is still showing intermittent memory errors when run for extended periods of
> time.
>
> Having found the processor to be at fault in the past, I dropped it into a
> different model board with some newer DDR memory, and it ran for about 24 hours
> without incident. So, that doesn't appear to be the culprit. Next step was to
> put the chip back on the old board and put on a pair of 800Rambus sticks I
> brought in from home... no errors.
>
> The question, then, would seem to be this: is the memory itself (two different
> batches, dated a year apart) at fault, does this board not like this flavor of
> memory, or is it having trouble running *any* memory at 1066? Sadly, as I lack
> another brand of 1066 memory, or another Rambus-equipped board, I do not have
> the ability to test further.
>
> Is there anything else I can try?
>

Have you tried a different power supply to see if maybe the old one is
failing?


> ------------------------------------------------
> Cthulhu saves sinners. He may get hungry later.
> ------------------------------------------------
>
>
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Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

On Wed, 19 Jan 2005 23:28:47 GMT, "Michael W. Ryder" <mwryder@_worldnet.att.net>
wrote:

>Have you tried a different power supply to see if maybe the old one is
>failing?

I have not, as the processor tested fine on the newer board using the same power
supply, but I can and will do so.


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------------------------------------------------


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Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

The P4T533-C is not stable with more than 1G of PC1066. It works fine with
2G of PC800. ASUS wasn't very upfront about this originally, but I believe
it's on their website now (not in the manual though). Check Kingston's
site, I think they will confirm what I'm saying.

--
Remove "john" from the address to reply.

Regards,
John
""Fish Taco Joe" Schmuckatelli" <joeschmuckatelli@KILL.SPAMFORD.WALLACE.NOW>
wrote in message news:41eefe83.17169379@news.tns.net...
> On Wed, 19 Jan 2005 23:28:47 GMT, "Michael W. Ryder"
> <mwryder@_worldnet.att.net>
> wrote:
>
>>Have you tried a different power supply to see if maybe the old one is
>>failing?
>
> I have not, as the processor tested fine on the newer board using the same
> power
> supply, but I can and will do so.
>
>
> ------------------------------------------------
> Cthulhu saves sinners. He may get hungry later.
> ------------------------------------------------
>
>
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> News==----
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> Newsgroups
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Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

There is a limit to the number of chips that the chipset can drive. The
limit is not memory size, per se, but the actual number of chips (devices).

By "chips" here, I truly mean chips and not memory modules.

The problem is, it's not even obvious how many chips are on a module,
because these modules have "heat spreaders" that cover and concel the
indivudal chips. This information actually is on the label of the
modules, SOMETIMES. For example, 128 Meg devices exist with both 4
chips (128/4) and 8 chips (128/8). At small memory sizes, this is just
never an issue. But when you start "getting up there" in memory size
(which 1.5 gigs certainly is for this vintage of product), it can become
an issue, especially if the modules are double-sided (have chips and
heat spreaders on both sides of the module).


JohnJeninga wrote:

> The P4T533-C is not stable with more than 1G of PC1066. It works fine with
> 2G of PC800. ASUS wasn't very upfront about this originally, but I believe
> it's on their website now (not in the manual though). Check Kingston's
> site, I think they will confirm what I'm saying.
>