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How much RAM can a Pentium II support??

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Josh F.

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Apr 12, 1998, 3:00:00 AM4/12/98
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>Future revisions of the Pentium II processor will not have the lower
>cachability limit that current versions have.

You mean, the 350 and 400mhz ones or those with 2meg cache?

Anti

Joe Goldmeer wrote in message <353561b0...@newsgroups.intel.com>...
>Hi,
>
>Intel has a page that deals with the cachability issues that are
>raised in your question:
>http://developer.intel.com/design/pcisets/memory.htm

>Future revisions of the Pentium II processor will not have the lower
>cachability limit that current versions have. even more future
>revisions will also address the 2 processor limitations that current
>Pentium II processors have.
>
>Joe Goldmeer
>Intel Internet Support
>
>* All other brands and names are property of their respective owner.
>
>Andre Arantes <andre....@bigfoot.com> wrote:
>>Hi folks,
>>
>>does anyone knows how much RAM a Pentium II can support?? I have somebody
asking for a server with a Pentium II processor and 1 GB of RAM, but I've
read in the datasheets that the P II can cache only 512 MB... Does it mean
that the P II won't 'see' the other 512 MB to cache, but will work anyway,
or will work with only 512 MB and ignore the rest, or this system will
crash??
>>Please, help me!
>>
>>Thanx,
>>Andre
>

Andre Arantes

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Apr 13, 1998, 3:00:00 AM4/13/98
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Joe

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Apr 13, 1998, 3:00:00 AM4/13/98
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That means the chace won't see anything over 512. It will still work you will just notice it operating more slowly depending on how much it uses that portion of ram. Using windows people claim it runs about 10 % slower when they have more memory than can be cached with a normal pentium system sinse windows tends to "load high". The difference might be greater with a PII
sinse it depends more on chache. Maybe you would want to use multiple processor pentium pro system which can cache up to 4 gigs I think.

Joe Goldmeer

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Apr 13, 1998, 3:00:00 AM4/13/98
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Hi,

Intel has a page that deals with the cachability issues that are
raised in your question:
http://developer.intel.com/design/pcisets/memory.htm

This page does not mention the Pentium(R) II processor's ranges, but
currently released Pentium II processors can cache up to 512MB of
memory and access up to 4 GB (4096 MB) of physical memory.

Intel does not recommend the currently released Pentium II processors
for servers or workstations where more than 2 processors or more than
512MB of memory is needed. We currently recommend the Pentium(R) Pro
processor for this type of environment.

Future revisions of the Pentium II processor will not have the lower
cachability limit that current versions have. even more future
revisions will also address the 2 processor limitations that current
Pentium II processors have.

Joe Goldmeer
Intel Internet Support

* All other brands and names are property of their respective owner.

Joe G

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Apr 15, 1998, 3:00:00 AM4/15/98
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Hi,

Today, Intel released the dA1 stepping of the Pentium(R) II processor.
The dA1 stepping uses a new tag chip that allows the 512K of L2 cache
to have a cacheable range up to 4GB (4096MB) The TagRAM chip is called
'T6P-e'

The CPUID of the C0 stepping is 0633
The CPUID of the C1 stepping is 0634
The CPUID of the dA0 stepping is 0650
The CPUID of the dA1 stepping is 0651

Here is a S-Spec matrix for you:
SPEED Stepping Boxed S-Spec OEM S-Spec
233-MHz C0 SL28K SL264
266-MHz C0 SL28L SL265
300-MHz C0 SL2MZ SL28R

233-MHz C1 SL2QA SL2HD
266-MHz C1 SL2QB SL2HC
300-MHz C1 SL2QC SL2HA

333-MHz dA0 SL2QF SL2KA

333-MHz Da1 SL2QH** SL2S5**
350-MHz Da1 SL2SF** SL2S6**
400-MHz Da1 SL2SH** SL2S7**
** S-Spec numbers with a ** mark have the new TagRAM chip that allows
cachaebility of up to 4GM of memory.

Joe Goldmeer
Intel Internet Support

* All other brands and names are property of their respective owner.

"Josh F." <JoshF...@aol.com> wrote:
>>Future revisions of the Pentium II processor will not have the lower
>>cachability limit that current versions have.
>

>You mean, the 350 and 400mhz ones or those with 2meg cache?
>
>Anti
>
>Joe Goldmeer wrote in message <353561b0...@newsgroups.intel.com>...

>>Hi,
>>
>>Intel has a page that deals with the cachability issues that are
>>raised in your question:
>>http://developer.intel.com/design/pcisets/memory.htm
>

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